Functional Ceramics › Institute of Glass and Ceramics

The focus of the Functional Ceramics research group is the experimental characterization of mechanical and electrical properties of novel perovskite materials, particularly the influence of external fields on the structural phase transformations and conductivity as well as temperature-dependent electromechanical behavior.

Perovskite-structured ceramics are commercially important oxides that are used in numerous actuation, sensing, and energy applications due to their wide-ranging functional material properties, such as ferroelectricity, ferromagnetism, superconductivity, colossal magnetoresistance, and ionic conductivity.

In order to realize such measurements, we have developed a number of unique experimental arrangements, which allow us to characterize the large and small signal electromechanical response of materials over a large temperature range (–150 to 800 °C) under large external mechanical and electrical fields.

Contact: Prof. Dr. Kyle G. Webber – kyle.g.webber@fau.de

Interested in becoming part of the Functional Ceramics Research Group? Please apply here.

Current Research Projects
The Influence of Mechanical Loads on the Functional Properties of Perovskite Oxides
–Influence of Structural Phase Transitions on the Mechanical Behavior of Lead-Free Potassium Sodium Niobate Piezoceramics
–Influence of Stress on Large Strain Behavior in Sustainable Lead-Free Actuator Materials
–Nonlinear Mechanical Properties of Perovskite Materials for Energy Applications
–Tailoring the Electromechanical Behavior of Lead-Free Composite Ferroelectrics – The Influence of Electrical Conductivity

Publications

Groszewicz PB., Koch L., Steiner S., Ayrikyan A., Webber K., Frömling T., Albe K., Buntkowsky G.:
The fate of aluminium in (Na,Bi)TiO3-based ionic conductors
In: Journal of Materials Chemistry A 8 (2020), p. 18188-18197
ISSN: 2050-7488
DOI: 10.1039/d0ta03554h
Wu HC., Hsieh DJ., Yen TW., Sun PJ., Kakarla DC., Her JL., Matsuda YH., Chang CK., Lai YC., Gooch M., Deng LZ., Webber K., Lee CA., Chou MMC., Chu CW., Yang HD.:
Pressure and magnetic field effects on ferroelastic and antiferromagnetic orderings in honeycomb-lattice Mn2V2O7
In: Physical Review B 102 (2020)
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.102.075130
Khansur NH., Martin A., Rieß K., Nishiyama H., Hatano K., Wang K., Li JF., Kakimoto KI., Webber K.:
Stress-modulated optimization of polymorphic phase transition in Li-doped (K,Na)NbO3
In: Applied Physics Letters 117 (2020), Article No.: 032901
ISSN: 0003-6951
DOI: 10.1063/5.0016072
Lorenz MM., Martin A., Webber K., Travitzky N.:
Electromechanical Properties of Robocasted Barium Titanate Ceramics
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.202000325
Martin A., Khansur NH., Eckstein U., Rieß K., Kakimoto KI., Webber K.:
High temperature piezoelectric response of polycrystalline Li-doped (K,Na)NbO3 ceramics under compressive stress
In: Journal of Applied Physics 127 (2020), Article No.: 114101
ISSN: 0021-8979
DOI: 10.1063/1.5134554
Khansur NH., Biggemann J., Stumpf M., Rieß K., Fey T., Webber K.:
Temperature- and Stress-Dependent Electromechanical Response of Porous Pb(Zr,Ti)O3
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.202000389
Cicconi MR., Khansur NH., Eckstein U., Werr F., Webber K., de Ligny D.:
Determining the local pressure during aerosol deposition using glass memory
In: Journal of the American Ceramic Society 103 (2020), p. 2443-2452
ISSN: 0002-7820
DOI: 10.1111/jace.16947
Mashkov O., Körfer J., Eigen A., Yousefi Amin AA., Killilea NA., Barabash A., Sytnyk M., Khansur NH., Halik M., Webber K., Heiß W.:
Effect of Ligand Treatment on the Tuning of Infrared Plasmonic Indium Tin Oxide Nanocrystal Electrochromic Devices
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.202000112
Li Y., Liu Y., Öchsner PE., Isaia D., Zhang Y., Wang K., Webber K., Li JF., Rödel J.:
Temperature dependent fracture toughness of KNN-based lead-free piezoelectric ceramics
In: Acta Materialia 174 (2019), p. 369-378
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2019.05.060
Rieß K., Geiger P., Khansur NH., Steiner S., Frömling T., Hinterstein M., Webber K.:
Influence of the annealing conditions on temperature-dependent ferroelastic behavior of LSCF
In: Materialia 6 (2019), Article No.: 100297
ISSN: 2589-1529
DOI: 10.1016/j.mtla.2019.100297
Khansur NH., Eckstein U., Li Y., Hall DA., Kaschta J., Webber K.:
Revealing the effects of aerosol deposition on the substrate-film interface using NaCl coating
In: Journal of the American Ceramic Society (2019)
ISSN: 0002-7820
DOI: 10.1111/jace.16489
URL: https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/jace.16489
Khansur NH., Eckstein U., Li Y., Hall DA., Kaschta J., Webber K.:
Revealing the effects of aerosol deposition on the substrate‐film interface using NaCl coating
In: Journal of the American Ceramic Society (2019)
ISSN: 0002-7820
DOI: 10.1111/jace.16489
URL: https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.16489
Martin A., Ursic H., Rojac T., Webber K.:
Direct observation of the stress-induced domain structure in lead-free (Na1/2Bi1/2) TiO3-based ceramics
In: Applied Physics Letters 114 (2019), Article No.: 052901
ISSN: 0003-6951
DOI: 10.1063/1.5084255
Martin A., Ursic H., Rojac T., Webber K.:
Direct observation of the stress-induced domain structure in lead-free (Na1/2Bi1/2) TiO3-based ceramics
In: Applied Physics Letters 114 (2019), Article No.: ARTN 052901
ISSN: 0003-6951
DOI: 10.1063/1.5084255
Wang S., Ayrikyan A., Zhang H., Webber K., Xu BX.:
Phase-Field Study of Electromechanical Coupling in Lead-Free Relaxor/Ferroelectric-Layered Composites
In: Advanced Electronic Materials 5 (2019)
ISSN: 2199-160X
DOI: 10.1002/aelm.201800710
Novak N., Keil P., Froemling T., Schader F., Martin A., Webber K., Roedel J.:
Influence of metal/semiconductor interface on attainable piezoelectric and energy harvesting properties of ZnO
In: Acta Materialia 162 (2019), p. 277-283
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2018.10.008
Eckstein U., Detsch R., Khansur NH., Brehl M., Deisinger U., de Ligny D., Boccaccini AR., Webber K.:
Bioactive glass coating using aerosol deposition
In: Ceramics International (2019)
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2019.04.197
Khansur NH., Eckstein U., Sadl M., Ursic H., Webber K.:
Fabrication of porous thick films using room-temperature aerosol deposition
In: Journal of the American Ceramic Society (2019)
ISSN: 0002-7820
DOI: 10.1111/jace.16772
Khansur NH., Eckstein U., Rieß K., Martin A., Drnec J., Deisinger U., Webber K.:
Synchrotron x-ray microdiffraction study of residual stresses in BaTiO3 films deposited at room temperature by aerosol deposition
In: Scripta Materialia 157 (2018), p. 86-89
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2018.07.045
Martin A., Khansur NH., Webber K.:
Electric field-induced changes in the ferroelastic behavior of (Na1/2Bi1/2)TiO3-BaTiO3
In: Journal of the European Ceramic Society 38 (2018), p. 4623-4630
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2018.06.017
Kaeswurm B., Schader F., Webber K.:
Ferroelectric, Ferroelastic, Piezoelectric, and Dielectric Properties of Lead Zirconate Titanate from –150°C to 350°C
In: Ceramics International 44 (2018), p. 2358-2363
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2017.10.204
Khansur NH., Eckstein U., Benker L., Deisinger U., Merle B., Webber K.:
Room temperature deposition of functional ceramic films on low-cost metal substrate
In: Ceramics International 44 (2018), p. 16295-16301
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2018.06.027
Schader F., Isaia D., Weber M., Aulbach E., Webber K.:
High-temperature stress-dependent piezoelectric and dielectric coefficient of soft Pb(Zr,Ti)O-3
In: Journal of Materials Science 53 (2018), p. 3296-3308
ISSN: 0022-2461
DOI: 10.1007/s10853-017-1817-8
Menge G., Lorenz H., Fu Z., Eichhorn F., Schader F., Webber K., Fey T., Greil P., Travitzky N.:
Paper-Derived Ferroelectric Ceramics: A Feasibility Study
In: Advanced Engineering Materials (2018)
ISSN: 1438-1656
DOI: 10.1002/adem.201800052
Koruza J., Bell AJ., Frömling T., Webber K., Wang K., Rödel J.:
Requirements for the transfer of lead-free piezoceramics into application
In: Journal of Materiomics 4 (2018), p. 13-26
ISSN: 2352-8478
DOI: 10.1016/j.jmat.2018.02.001
Geiger P., Khansur NH., Rieß K., Martin A., Hinterstein M., Webber K.:
Stress-dependent crystal structure of lanthanum strontium cobalt ferrite by in situ synchrotron X-ray diffraction
In: Journal of Applied Physics 123 (2018), Article No.: 075104
ISSN: 1089-7550
DOI: 10.1063/1.5017934
Martin A., Khansur NH., Rieß K., Webber K.:
Frequency dependence of the relaxor-to-ferroelectric transition under applied electrical and mechanical fields
In: Journal of the European Ceramic Society (2018)
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2018.12.026
Segouin V., Kaeswurm B., Webber K., Daniel L.:
Temperature-dependent anhysteretic behavior of co-doped PZT
In: Journal of Applied Physics (2018), Article No.: 104103
ISSN: 1089-7550
DOI: 10.1063/1.5040556
Kaeswurm B., Segouin V., Webber K.:
The Anhysteretic Polarisation of Ferroelectrics
In: Journal of Physics D: Applied Physics 51 (2018), Article No.: 075305
ISSN: 0022-3727
DOI: 10.1088/1361-6463/aaa698
Martin A., Khansur NH., Webber K.:
Electric field-induced changes in the ferroelastic behavior of (Na1/2Bi1/2)TiO3-BaTiO3
In: Journal of the European Ceramic Society 38 (2018), p. 4623-4630
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2018.06.017
Froemling T., Steiner S., Ayrikyan A., Bremecker D., Duerrschnabel M., Molina-Luna L., Kleebe HJ., Hutter H., Webber K., Acosta M.:
Designing properties of (Na1/2Bi: X)TiO3-based materials through A-site non-stoichiometry
In: Journal of Materials Chemistry C 6 (2018), p. 738-744
ISSN: 2050-7526
DOI: 10.1039/c7tc03975a
Ayrikyan A., Prach O., Khansur NH., Keller S., Yasui S., Itoh M., Sakata O., Durst K., Webber K.:
Investigation of residual stress in lead-free BNT-based ceramic/ceramic composites
In: Acta Materialia 148 (2018), p. 432-441
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2018.02.014
Martin A., Kakimoto KI., Hatano K., Doshida Y., Webber K.:
Ferroelastic behavior across the orthorhombic-to-tetragonal phase transition region of NKN-based lead-free ferroelectrics
In: Journal of Applied Physics 122 (2017)
ISSN: 0021-8979
DOI: 10.1063/1.4989759
Voegler M., Daniels JE., Webber K., Roedel J.:
Absence of toughening behavior in 0.94(Na1/2Bi1/2)TiO3-0.06BaTiO(3) relaxor ceramic
In: Scripta Materialia 136 (2017), p. 115-119
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2017.04.023
Ayrikyan A., Kastner A., Khansur NH., Yasui S., Itoh M., Webber K.:
Lead-Free Multilayer Piezoceramic Composites: Effect of Cosintering on Electromechanical Properties
In: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control 64 (2017), p. 1127-1134
ISSN: 0885-3010
DOI: 10.1109/TUFFC.2017.2701882
Webber K., Voegler M., Khansur NH., Kaeswurm B., Daniels JE., Schader F.:
Review of the mechanical and fracture behavior of perovskite lead-free ferroelectrics for actuator applications
In: Smart Materials and Structures 26 (2017), Article No.: 063001
ISSN: 1361-665X
DOI: 10.1088/1361-665X/aa590c
Chen D., Ayrikyan A., Webber K., Kamlah M.:
Time-dependent electromechanical response of 0.93(Na1/2Bi1/2) TiO3-0.07BaTiO(3) lead-free piezoceramic under constant electric field
In: Journal of Applied Physics 121 (2017)
ISSN: 0021-8979
DOI: 10.1063/1.4978704
Schader FH., Rossetti GA., Luo J., Webber K.:
Piezoelectric and ferroelectric properties of < 001 > c Pb(In1/2Nb1/2) O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystals under combined thermal and mechanical loading
In: Acta Materialia 126 (2017), p. 174-181
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2016.12.051
Schader FH., Khakpash N., Rossetti GA., Webber K.:
Phase transitions in BaTiO3 under uniaxial compressive stress: Experiments and phenomenological analysis
In: Journal of Applied Physics 121 (2017)
ISSN: 0021-8979
DOI: 10.1063/1.4976060
Geiger PT., Clemens O., Khansur NH., Hinterstein M., Sahini MG., Grande T., Tung P., Daniels JE., Webber K.:
Nonlinear mechanical behaviour of Ba0.5Sr0.5Co0.8Fe0.2O3 (- delta) and in situ stress dependent synchrotron X-ray diffraction study
In: Solid State Ionics 300 (2017), p. 106-113
ISSN: 0167-2738
DOI: 10.1016/j.ssi.2016.11.027
Hagiwara M., Ehara Y., Novak N., Khansur NH., Ayrikyan A., Webber K., Fujihara S.:
Relaxor-ferroelectric crossover in (B i1/2 K1/2)Ti O3: Origin of the spontaneous phase transition and the effect of an applied external field
In: Physical Review B 96 (2017), Article No.: 014103
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.96.014103
Ayrikyan A., Weyland F., Steiner S., Duerrschnabel M., Molina-Luna L., Koruza J., Webber K.:
Multilayer lead-free piezoceramic composites: Influence of co-firing on microstructure and electromechanical behavior
In: Journal of the American Ceramic Society (2017)
ISSN: 1551-2916
DOI: 10.1111/jace.14887
Wang K., Yao FZ., Koruza J., Cheng LQ., Schader FH., Zhang MH., Roedel J., Li JF., Webber K.:
Electromechanical properties of CaZrO3 modified (K,Na)NbO3-based lead-free piezoceramics under uniaxial stress conditions
In: Journal of the American Ceramic Society 100 (2017), p. 2116-2122
ISSN: 0002-7820
DOI: 10.1111/jace.14661
Kaeswurm B., Barcza A., Vögler M., Geiger P., Katter M., Gutfleisch O., Cohen L.:
Behaviour of the Young's modulus at the magnetocaloric transition in La(Fe,Co,Si)13
In: Journal of Alloys and Compounds 697 (2017), p. 427-433
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2016.11.360
Khansur NH., Glaum J., Clemens O., Zhang H., Daniels JE., Webber K.:
Uniaxial compressive stress and temperature dependent mechanical behavior of (1-x)BiFeO3-xBaTiO3 lead-free piezoelectric ceramics
In: Ceramics International 43 (2017), p. 9092-9098
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2017.04.055
Ehara Y., Novak N., Ayrikyan A., Geiger P., Webber K.:
Phase transformation induced by electric field and mechanical stress in Mn-doped (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3 ceramics
In: Journal of Applied Physics 120 (2016), Article No.: 174103
ISSN: 0021-8979
DOI: 10.1063/1.4966614
Schader FH., Wang Z., Hinterstein M., Daniels JE., Webber K.:
Stress-modulated relaxor-to-ferroelectric transition in lead-free (Na1/2Bi1/2) TiO3-BaTiO3 ferroelectrics
In: Physical Review B 93 (2016)
ISSN: 2469-9950
DOI: 10.1103/PhysRevB.93.134111
Liu X., Wegener CM., Polster S., Jank M., Roosen A., Frey L.:
Materials Integration for Printed Zinc Oxide Thin-Film Transistors: Engineering of a Fully-Printed Semiconductor/Contact Scheme
In: Journal of Display Technology 12 (2016)
ISSN: 1551-319X
DOI: 10.1109/JDT.2015.2445378
Huan Y., Wang X., Koruza J., Wang K., Webber K., Hao Y., Li L.:
Inverted electro-mechanical behaviour induced by the irreversible domain configuration transformation in (K,Na)NbO3-based ceramics
In: Scientific Reports 6 (2016)
ISSN: 2045-2322
DOI: 10.1038/srep22053
Yao FZ., Wang K., Jo W., Webber K., Comyn TP., Ding JX., Xu B., Cheng LQ., Zheng MP., Hou YD., Li JF.:
Diffused Phase Transition Boosts Thermal Stability of High-Performance Lead-Free Piezoelectrics
In: Advanced Functional Materials 26 (2016), p. 1217-1224
ISSN: 1616-301X
DOI: 10.1002/adfm.201504256
Wefring ET., Schader FH., Webber K., Einarsrud MA., Grande T.:
Electrical conductivity and ferroelastic properties of Ti-substituted solid solutions (1-x) BiFeO3 - x Bi0.5K0.5TiO3
In: Journal of the European Ceramic Society 36 (2016), p. 497-506
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2015.09.044
Wakily H., Koruza J., Ayrikyan A., Webber K.:
Enhanced Electromechanical properties of ferroelectric Bi1/2Na1/2TiO3 -7BaTiO3/relaxorBi1/2Na1/2TiO3 -25SrTiO3composites
2016 Joint IEEE International Symposium on the Applications of Ferroelectrics, European Conference on Application of Polar Dielectrics, and Piezoelectric Force Microscopy Workshop, ISAF/ECAPD/PFM 2016
DOI: 10.1109/ISAF.2016.7578072
Patterson EA., Major M., Donner W., Durst K., Webber K., Rödel J.:
Temperature-Dependent Deformation and Dislocation Density in SrTiO3 (001) Single Crystals
In: Journal of the American Ceramic Society (2016)
ISSN: 1551-2916
DOI: 10.1111/jace.14352
Ehara Y., Novak N., Yasui S., Itoh M., Webber K.:
Electric-field-temperature phase diagram of Mn-doped Bi-0.5(Na0.9K0.1)(0.5)TiO3 ceramics
In: Applied Physics Letters 107 (2015), Article No.: 262903
ISSN: 0003-6951
DOI: 10.1063/1.4938759
Khansur NH., Rojac T., Damjanovic D., Reinhard C., Webber K., Kimpton JA., Daniels JE., Khansur NH.:
Electric-Field-Induced Domain Switching and Domain Texture Relaxations in Bulk Bismuth Ferrite
In: Journal of the American Ceramic Society 98 (2015), p. 3884-3890
ISSN: 0002-7820
DOI: 10.1111/jace.13839
Khansur NH., Kawashima H., Wada S., Hudspeth JM., Daniels J.:
Enhanced extrinsic domain switching strain in core-shell structured BaTiO3-KNbO3 ceramics
In: Acta Materialia 98 (2015), p. 182-189
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2015.07.034
Voegler M., Acosta M., Brandt DRJ., Molina-Luna L., Webber K.:
Temperature-dependent R-curve behavior of the lead-free ferroelectric 0.615Ba(Zr0.2Ti0.8)O-3-0.385(Ba0.7Ca0.3)TiO3 ceramic
In: Engineering Fracture Mechanics 144 (2015), p. 68-77
ISSN: 0013-7944
DOI: 10.1016/j.engfracmech.2015.06.069
Wang R., Wang K., Yao F., Li JF., Schader FH., Webber K., Jo W., Roedel J.:
Temperature Stability of Lead-Free Niobate Piezoceramics with Engineered Morphotropic Phase Boundary
In: Journal of the American Ceramic Society 98 (2015), p. 2177-2182
ISSN: 0002-7820
DOI: 10.1111/jace.13604
Koruza J., Franzbach DJ., Schader FH., Rojas V., Webber K.:
Enhancing the operational range of piezoelectric actuators by uniaxial compressive preloading
In: Journal of Physics D-Applied Physics 48 (2015)
ISSN: 0022-3727
DOI: 10.1088/0022-3727/48/21/215302
Rödel J., Webber K., Dittmer R., Jo W., Kimura M., Damjanovic D.:
Transferring lead-free piezoelectric ceramics into application
In: Journal of the European Ceramic Society 35 (2015), p. 1659-1681
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2014.12.013
Ayrikyan A., Rojas V., Molina-Luna L., Acosta M., Koruza J., Webber K.:
Enhancing Electromechanical Properties of Lead-Free Ferroelectrics With Bilayer Ceramic/Ceramic Composites
In: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control 62 (2015), p. 997-1006
ISSN: 0885-3010
DOI: 10.1109/TUFFC.2014.006673
Zhang H., Groh C., Zhang Q., Jo W., Webber K., Rödel J.:
Large Strain in Relaxor/Ferroelectric Composite Lead-Free Piezoceramics
In: Advanced Electronic Materials 1 (2015)
ISSN: 2199-160X
DOI: 10.1002/aelm.201500018
Daniel L., Hall DA., Koruza J., Webber K., King A., Withers PJ.:
Revisiting the blocking force test on ferroelectric ceramics using high energy x-ray diffraction
In: Journal of Applied Physics 117 (2015)
ISSN: 0021-8979
DOI: 10.1063/1.4918928
Deluca M., Picht G., Hoffmann MJ., Rechtenbach A., Toepfer J., Schader FH., Webber K.:
Chemical and structural effects on the high-temperature mechanical behavior of (1-x)(Na1/2Bi1/2)TiO3-xBaTiO(3) ceramics
In: Journal of Applied Physics 117 (2015)
ISSN: 0021-8979
DOI: 10.1063/1.4916784
Humburg HI., Acosta M., Jo W., Webber K., Roedel J.:
Stress-dependent electromechanical properties of doped (Ba1-xCax)(ZryTi1-y)O-3
In: Journal of the European Ceramic Society 35 (2015), p. 1209-1217
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2014.10.016
Morozov M., Einarsrud MA., Tolchard JR., Geiger P., Webber K., Damjanovic D., Grande T.:
In-situ structural investigations of ferroelasticity in soft and hard rhombohedral and tetragonal PZT
In: Journal of Applied Physics 118 (2015), p. 164104
ISSN: 0021-8979
DOI: 10.1063/1.4934615
Schader FH., Morozov M., Wefring E., Grande T., Webber K.:
Mechanical stability of piezoelectric properties in ferroelectric perovskites
In: Journal of Applied Physics 117 (2015), p. 194101
ISSN: 0021-8979
DOI: 10.1063/1.4919815
Acosta M., Schmitt LA., Molina-Luna L., Scherrer MC., Brilz M., Webber K., Deluca M., Kleebe HJ., Rödel J., Donner W.:
Core–Shell Lead–Free Piezoelectric Ceramics: Current Status and Advanced Characterization of the Bi1/2Na1/2TiO3–SrTiO3 System
In: Journal of the American Ceramic Society 98 (2015), p. 3405-3422
ISSN: 1551-2916
DOI: 10.1111/jace.13853
Christmann J., Mueller R., Webber K., Isaia D., Schader FH., Kipfstuhl S., Freitag J., Humbert A.:
Measurement of the fracture toughness of polycrystalline bubbly ice from an Antarctic ice core
In: Earth System Science Data 7 (2015), p. 87-92
ISSN: 1866-3508
DOI: 10.5194/essd-7-87-2015
Wang Z., Webber K., Hudspeth JM., Hinterstein M., Daniels JE.:
Electric-field-induced paraelectric to ferroelectric phase transformation in prototypical polycrystalline BaTiO3
In: Applied Physics Letters 105 (2014)
ISSN: 0003-6951
DOI: 10.1063/1.4898573
Ehmke MC., Schader FH., Webber K., Roedel J., Blendell JE., Bowman KJ.:
Stress, temperature and electric field effects in the lead-free (Ba,Ca)(Ti,Zr)O-3 piezoelectric system
In: Acta Materialia 78 (2014), p. 37-45
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2014.06.005
Webber K., Franzbach DJ., Koruza J.:
Determination of the True Operational Range of a Piezoelectric Actuator
In: Journal of the American Ceramic Society 97 (2014), p. 2842-2849
ISSN: 0002-7820
DOI: 10.1111/jace.13024
Brandt DR., Acosta M., Koruza J., Webber K.:
Mechanical constitutive behavior and exceptional blocking force of lead-free BZT-xBCT piezoceramics
In: Journal of Applied Physics 115 (2014)
ISSN: 0021-8979
DOI: 10.1063/1.4879395
Daniel L., Hall DA., Webber K., King A., Withers PJ.:
Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements
In: Journal of Applied Physics 115 (2014)
ISSN: 0021-8979
DOI: 10.1063/1.4874222
Khansur NH., Groh C., Jo W., Reinhard C., Kimpton JA., Webber K., Daniels JE., Khansur NH.:
Tailoring of unipolar strain in lead-free piezoelectrics using the ceramic/ceramic composite approach
In: Journal of Applied Physics 115 (2014)
ISSN: 0021-8979
DOI: 10.1063/1.4869786
Seo YH., Koruza J., Bencan A., Malic B., Rödel J., Webber K.:
Simultaneous Enhancement of Fracture Toughness and Unipolar Strain in Pb(Zr,Ti)O-3-ZrO2 Composites Through Composition Adjustment
In: Journal of the American Ceramic Society 97 (2014), p. 1582-1588
ISSN: 0002-7820
DOI: 10.1111/jace.12929
Zhang H., Jo W., Wang K., Webber K.:
Compositional dependence of dielectric and ferroelectric properties in BiFeO3-BaTiO3 solid solutions
In: Ceramics International 40 (2014), p. 4759-4765
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2013.09.020
Trefalt G., Bencan A., Kamplet M., Malic B., Seo Y., Webber K.:
Evaluation of the homogeneity in Pb(Zr,Ti)O-3-zirconia composites prepared by the hetero-agglomeration of precursors using the Voronoi-diagram approach
In: Journal of the European Ceramic Society 34 (2014), p. 669-675
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2013.09.014
Dittmer R., Jo W., Webber K., Jones JL., Rödel J.:
Local structure change evidenced by temperature-dependent elastic measurements: Case study on Bi1/2Na1/2TiO3-based lead-free relaxor piezoceramics
In: Journal of Applied Physics 115 (2014)
ISSN: 0021-8979
DOI: 10.1063/1.4866092
Franzbach DJ., Seo YH., Studer AJ., Zhang Y., Glaum J., Daniels JE., Koruza J., Bencan A., Malic B., Webber K.:
Electric-field-induced phase transitions in co-doped Pb(Zr1-xTix)O-3 at the morphotropic phase boundary
In: Science and Technology of Advanced Materials 15 (2014)
ISSN: 1468-6996
DOI: 10.1088/1468-6996/15/1/015010
Tan X., Young S., Seo YH., Zhang J., Hong W., Webber K.:
Transformation toughening in an antiferroelectric ceramic
In: Acta Materialia 62 (2014), p. 114-121
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2013.09.038
Talai A., Gmeiner B., Wegener CM., Roosen A., Kölpin A., Steinhäußer F., Deisinger U., Bittner A., Schmid U., Weigel R.:
Electromagnetic analysis of conductor track surface roughnesses from 1 GHz to 110 GHz
International Conference on Electromagnetics in Advanced Applications (ICEAA) (Palm Beach, 3. August 2014 - 8. August 2014)
In: Electromagnetics in Advanced Applications (ICEAA), 2014 International Conference on 2014
DOI: 10.1109/ICEAA.2014.6903887
URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6903887
Groh C., Franzbach DJ., Jo W., Webber K., Kling J., Schmitt LA., Kleebe HJ., Jeong S., Lee JS., Rödel J.:
Relaxor/Ferroelectric Composites: A Solution in the Quest for Practically Viable Lead-Free Incipient Piezoceramics
In: Advanced Functional Materials 24 (2014), p. 356-362
ISSN: 1616-301X
DOI: 10.1002/adfm.201302102
Seuß S., Lehmann M., Boccaccini AR.:
Alternating current electrophoretic deposition of antibacterial bioactive Glass-Chitosan composite coatings
In: International Journal of Molecular Sciences 15 (2014), p. 12231-12242
ISSN: 1422-0067
DOI: 10.3390/ijms150712231
Seo YH., Voegler M., Isaia D., Aulbach E., Roedel J., Webber K.:
Temperature-dependent R-curve behavior of Pb(Zr1-xTix)O-3
In: Acta Materialia 61 (2013), p. 6418-6427
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2013.07.020
Daniels JE., Picht G., Kimber S., Webber K.:
Mechanical double loop behavior in BaTiO3: Stress induced paraelastic to ferroelastic phase transformation
In: Applied Physics Letters 103 (2013)
ISSN: 0003-6951
DOI: 10.1063/1.4821446
Schader FH., Aulbach E., Webber K., Rossetti GA.:
Influence of uniaxial stress on the ferroelectric-to-paraelectric phase change in barium titanate
In: Journal of Applied Physics 113 (2013)
ISSN: 0021-8979
DOI: 10.1063/1.4799581
Seo YH., Franzbach DJ., Koruza J., Bencan A., Malic B., Kosec M., Jones JL., Webber K.:
Nonlinear stress-strain behavior and stress-induced phase transitions in soft Pb(Zr1-xTix)O-3 at the morphotropic phase boundary
In: Physical Review B 87 (2013)
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.87.094116
Rödel J., Seo YH., Bencan A., Malic B., Kosec M., Webber K.:
R-curves. in transformation toughened lead zirconate titanate
In: Engineering Fracture Mechanics 100 (2013), p. 86-91
ISSN: 0013-7944
DOI: 10.1016/j.engfracmech.2012.06.023
Dittmer R., Webber K., Aulbach E., Jo W., Tan X., Rödel J.:
Electric-field-induced polarization and strain in 0.94(Bi1/2Na1/2)TiO3-0.06BaTiO(3) under uniaxial stress
In: Acta Materialia 61 (2013), p. 1350-1358
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2012.11.012
Dittmer R., Webber K., Aulbach E., Jo W., Tan X., Rödel J.:
Optimal working regime of lead-zirconate-titanate for actuation applications
In: Sensors and Actuators A-Physical 189 (2013), p. 187-194
ISSN: 0924-4247
DOI: 10.1016/j.sna.2012.09.015
Salje EKH., Carpenter MA., Nataf GF., Picht G., Webber K., Weerasinghe J., Lisenkov S., Bellaiche L.:
Elastic excitations in BaTiO3 single crystals and ceramics: Mobile domain boundaries and polar nanoregions observed by resonant ultrasonic spectroscopy
In: Physical Review B 87 (2013)
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.87.014106
Kölpin N., Wegener CM., Teuber E., Polster S., Frey L., Roosen A.:
Conceptional design of nano-particulate ITO inks for inkjet printing of electron devices
In: Journal of Materials Science 48 (2013), p. 1623-1631
ISSN: 0022-2461
DOI: 10.1007/s10853-012-6919-8
Picht G., Webber K., Zhang Y., Kungl H., Damjanovic D., Hoffmann MJ.:
Critical mechanical and electrical transition behavior of BaTiO3: The observation of mechanical double loop behavior
In: Journal of Applied Physics 112 (2012)
ISSN: 0021-8979
DOI: 10.1063/1.4767059
Franzbach DJ., Gu YJ., Chen LQ., Webber K.:
Electric field-induced tetragonal to orthorhombic phase transitions in [110](c)-oriented BaTiO3 single crystals
In: Applied Physics Letters 101 (2012)
ISSN: 0003-6951
DOI: 10.1063/1.4769368
Leist T., Broetz J., Seo YH., Cheng S., Webber K.:
Crack growth resistance behavior of lanthanum doped bismuth ferrite-lead titanate: Effect of tetragonality and mixed phase crystal structures
In: Engineering Fracture Mechanics 96 (2012), p. 267-275
ISSN: 0013-7944
DOI: 10.1016/j.engfracmech.2012.08.008
Seo YH., Webber K., Bencan A., Koruza J., Malic B., Kosec M., Rödel J.:
Deconvolving Ferroelastic and Phase Transformation Toughening in Pb(Zr1-xTix)O-3 and Pb1-yLay(Zr1-xTix)O-3
In: Journal of the American Ceramic Society 95 (2012), p. 3713-3715
ISSN: 0002-7820
DOI: 10.1111/jace.12007
Sluka T., Webber K., Colla E., Damjanovic D.:
Phase field simulations of ferroelastic toughening: The influence of phase boundaries and domain structures
In: Acta Materialia 60 (2012), p. 5172-5181
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2012.06.023
Dittmer R., Aulbach E., Jo W., Webber K., Rödel J.:
Large blocking force in Bi1/2Na1/2TiO3-based lead-free piezoceramics
In: Scripta Materialia 67 (2012), p. 100-103
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2012.03.031
Bencan A., Malic B., Drnovsek S., Tellier J., Rojac T., Pavlic J., Kosec M., Webber K., Roedel J., Damjanovic D.:
Structure and the Electrical Properties of Pb(Zr,Ti)O-3 - Zirconia Composites
In: Journal of the American Ceramic Society 95 (2012), p. 651-657
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2011.04803.x
Seo YH., Bencan A., Koruza J., Malic B., Kosec M., Webber K.:
Compositional Dependence of R-curve Behavior in Soft Pb(Zr1-xTix)O-3 Ceramics
In: Journal of the American Ceramic Society 94 (2011), p. 4419-4425
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2011.04889.x
Tan X., Ma C., Frederick J., Beckman S., Webber K.:
The Antiferroelectric Ferroelectric Phase Transition in Lead-Containing and Lead-Free Perovskite Ceramics
In: Journal of the American Ceramic Society 94 (2011), p. 4091-4107
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2011.04917.x
Franzbach DJ., Xu BX., Mueller R., Webber K.:
The effects of polarization dynamics and domain switching energies on field induced phase transformations of perovskite ferroelectrics
In: Applied Physics Letters 99 (2011)
ISSN: 0003-6951
DOI: 10.1063/1.3644957
Webber K., Seo YH., Lee HY., Aulbach E., Jo W., Rödel J.:
R-Curve Behavior of Pb(Mg1/3Nb2/3)O-3-29 mol% PbTiO3 Single Crystals: The Effect of Crystallographic Orientation and Grain Structure
In: Journal of the American Ceramic Society 94 (2011), p. 2728-2730
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2011.04677.x
Leist T., Webber K., Jo W., Granzow T., Aulbach E., Suffner J., Roedel J.:
Domain switching energies: Mechanical versus electrical loading in La-doped bismuth ferrite-lead titanate
In: Journal of Applied Physics 109 (2011)
ISSN: 0021-8979
DOI: 10.1063/1.3555599
Peukert W., Knieke C., Vozdecky P., Roosen A.:
Advanced processes for better materials-tape casting from nanoparticles
In: Chemie Ingenieur Technik 83 (2011), p. 535-544
ISSN: 0009-286X
DOI: 10.1002/cite.201000138
Leist T., Webber K., Jo W., Aulbach E., Roedel J., Prewitt AD., Jones JL., Schmidlin J., Hubbard CR.:
Stress-induced structural changes in La-doped BiFeO3-PbTiO3 high-temperature piezoceramics
In: Acta Materialia 58 (2010), p. 5962-5971
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2010.07.012
Webber K., Aulbach E., Roedel J.:
High temperature blocking force measurements of soft lead zirconate titanate
In: Journal of Physics D-Applied Physics 43 (2010)
ISSN: 0022-3727
DOI: 10.1088/0022-3727/43/36/365401
Marsilius M., Webber K., Aulbach E., Granzow T.:
Comparison of the Temperature-Dependent Ferroelastic Behavior of Hard and Soft Lead Zirconate Titanate Ceramics
In: Journal of the American Ceramic Society 93 (2010), p. 2850-2856
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2010.03801.x
Webber K., Zhang Y., Jo W., Daniels JE., Roedel J.:
High temperature stress-induced "double loop-like" phase transitions in Bi-based perovskites
In: Journal of Applied Physics 108 (2010)
ISSN: 0021-8979
DOI: 10.1063/1.3428373
Yoon MS., Khansur NH., Ur SC.:
The effect of pre-milling/pre-synthesis process and excess Ba on the microstructure and dielectric/piezoelectric properties of nano-sized 0.94[(Bi0.5Na0.5)TiO3]-0.06[Ba(1+x)TiO3]
In: Ceramics International 36 (2010), p. 1265-1275
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2010.01.011
Vozdecky P., Roosen A., Knieke C., Peukert W.:
Direct Tape Casting of Nanosized Al2O3 Slurries Derived from Autogenous Nanomilling
In: Journal of the American Ceramic Society 93 (2010), p. 1313-1319
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2009.03597.x
Yoon MS., Khansur NH., Choi BK., Lee YG., Ur SC.:
The effect of nano-sized BNBT on microstructure and dielectric/piezoelectric properties
In: Ceramics International 35 (2009), p. 3027-3036
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2009.04.016
Schilling A., Byrne D., Catalan G., Webber K., Genenko YA., Wu GS., Scott JF., Gregg JM.:
Domains in Ferroelectric Nanodots
In: Nano Letters 9 (2009), p. 3359-3364
ISSN: 1530-6984
DOI: 10.1021/nl901661a
Webber K., Aulbach E., Key T., Marsilius M., Granzow T., Roedel J.:
Temperature-dependent ferroelastic switching of soft lead zirconate titanate
In: Acta Materialia 57 (2009), p. 4614-4623
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2009.06.037
Webber K., Robinson HC., Rossetti GA., Lynch CS.:
A distributed step-like switching model of the continuous field-driven phase transformations observed in PMN-xPT relaxor ferroelectric single crystals
In: Acta Materialia 56 (2008), p. 2744-2749
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2008.02.006
Webber K., Zuo R., Lynch CS.:
Ceramic and single-crystal (1-x)PMN-xPT constitutive behavior under combined stress and electric field loading
In: Acta Materialia 56 (2008), p. 1219-1227
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2007.11.025
Bathelt R., Buchhauser D., Gärditz C., Paetzold R., Wellmann P.:
Light extraction from OLEDs for lighting applications through light scattering
In: Organic Electronics 8 (2007), p. 293-299
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2006.11.003
Kemethmüller S., Roosen A., Götz-Neunhoeffer F., Neubauer J.:
Quantitative analysis of crystalline and amorphous phases in glass-ceramic composites like LTCC by the rietveld method
In: Journal of the American Ceramic Society 89 (2006), p. 2632-2637
ISSN: 0002-7820
DOI: 10.1111/j.1551-2916.2006.01113.x
Webber K., Hopkinson DP., Lynch CS.:
Application of a classical lamination theory model to the design of piezoelectric composite unimorph actuators
In: Journal of Intelligent Material Systems and Structures 17 (2006), p. 29-34
ISSN: 1045-389X
DOI: 10.1177/1045389X06056059