Results 41 to 50 of about 5,651 (284)

Ferroelectricity and Self-Polarization in Ultrathin Relaxor Ferroelectric Films [PDF]

Scientific Reports, 2016
AbstractWe report ferroelectricity and self-polarization in the (001) oriented ultrathin relaxor ferroelectric PMN-PT films grown on Nb-SrTiO3, SrRuO3 and La0.7Sr0.3MnO3, respectively. Resistance-voltage measurements and AC impedance analysis suggest that at high temperatures Schottky depletion width in a 4 nm thick PMN-PT film deposited on Nb-SrTiO3 ...
Peixian Miao, Yonggang Zhao, Nengneng Luo, Diyang Zhao, Aitian Chen, Zhong Sun, Meiqi Guo, Meihong Zhu, Huiyun Zhang, Qiang Li   +9 more
openaire   +2 more sources

Understanding the large strain behavior in the lead-free doped Bi1/2(Na0.78K0.22)1/2TiO3–BiMg1/2Ti1/2O3 (BNKT-BMT) piezoelectric system

AIP Advances, 2020
The ternary solid solution Bi1/2(Na0.78K0.22)1/2TiO3-BiMg1/2Ti1/2O3 (BNKT-BMT) was investigated for high-strain actuator applications. This study of the BNKT-BMT system looked at the macroscopic properties as a function of BMT doping, temperature, and ...
Nicholas Mostovych, Sung Sik Won, Ill Won Kim, Seung-Hyun Kim, Angus I. Kingon   +4 more
doaj   +1 more source

Time-Resolved Nanobeam X-ray Diffraction of a Relaxor Ferroelectric Single Crystal under an Alternating Electric Field

Crystals, 2021
Lead-containing relaxor ferroelectrics show enormous piezoelectric capabilities relating to their heterogeneous structures. Time-resolved nanobeam X-ray diffraction reveals the time and position dependences of the local lattice strain on a relaxor ...
Shinobu Aoyagi, Ayumi Aoyagi, Hiroaki Takeda, Hitoshi Osawa, Kazushi Sumitani, Yasuhiko Imai, Shigeru Kimura   +6 more
doaj   +1 more source

An Overview of Linear Dielectric Polymers and Their Nanocomposites for Energy Storage

Molecules, 2021
As one of the most important energy storage devices, dielectric capacitors have attracted increasing attention because of their ultrahigh power density, which allows them to play a critical role in many high-power electrical systems.
Lvye Dou, Yuan-Hua Lin, Ce-Wen Nan
doaj   +1 more source

Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics [PDF]

Journal of Advanced Dielectrics, 2020
The energy storage properties of (1−x)Bi0.5Na0.5TiO3–xBaTiO3(0≤x≤0.08) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field (P–E) loops at various temperatures. The energy storage densities are observed
Sarir Uddin, Guang-Ping Zheng, Asif Khan, Muhammad Riaz Khan, Banaras Khan   +4 more
doaj   +1 more source

Development of Ferroelectric Order in Relaxor (1-x)Pb(Mg1/3Nb2/3)O3 - xPbTiO3

, 2002
The microstructure and phase transition in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) and its solid solution with PbTiO3 (PT), PMN-xPT, remain to be one of the most puzzling issues of solid state science.
A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, B. Dkhil, B. Noheda, B. Noheda, B. Noheda, C.-S. Tu, D. Viehland, E. V. Colla, G. Burns, G. Calvarin, G. K. Williamson, G. Shirane, H. Arndt, J. Gao, K. Fujishiro, K. Hirota, L. Bellaiche, L. E. Cross, L. W. Finger, N. de Mathan, O. Bunina, O. Didault, O. Noblanc, P. Bonneau, P. M. Gehring, P. Stephens, R. Blinc, R. D. Shannon, R. E. Newhnam, R. Pirc, S. B. Vakhrushev, S. J. Jang, S. L. Swartz, S. W. Choi, S. Wakimoto, S.-E. Park, S.-E. Park, T. Shrout, T. Y. Koo, V. Westphal, W. Kleemann, Y. Bing, Y. Imry, Y. Uesu, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye   +54 more
core   +1 more source

Electrocaloric effect in relaxor ferroelectrics [PDF]

Journal of Applied Physics, 2011
A theoretical model for the electrocaloric effect (ECE) in relaxor ferroelectrics is presented. By solving a self-consistent relation for the ECE temperature change ΔT and minimizing numerically the mean field free energy for relaxors, the field and temperature dependence of ΔT is calculated.
Pirc, R., Kutnjak, Z., Blinc, R., Zhang, Q. M.   +3 more
openaire   +2 more sources

Critical state to achieve a giant electric field-induced strain with a low hysteresis in relaxor piezoelectric ceramics

Journal of Materiomics, 2021
Due to the extrinsic contribution of domain wall motions to electro-strains, the incompatibility of the large electro-strain with a low hysteresis in piezoelectric ceramics is a stumbling block for designing high-performance piezoelectrical actuators ...
Xiang Xia, Xingan Jiang, Jiangtao Zeng, Liaoying Zheng, Zhenyong Man, Huarong Zeng, Guorong Li   +6 more
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Compressible spherical dipolar glass model of relaxor ferroelectrics

, 2012
The interactions between the dielectric polarization and the fluctuations of the strain (stress) tensor in relaxor ferroelectrics are shown to give rise to the anisotropy of the anharmonic P4-term in the Landau-type free energy, however, the harmonic P2 ...
Kutnjak, Z., Novak, N., Pirc, R.
core   +1 more source