Results 321 to 330 of about 288,433 (353)

Defect‐Driven Structural Distortions at the Surface of Relaxor Ferroelectrics

Advanced Functional Materials, 2019
Relaxor‐ferroelectric materials find application in a broad range of technological devices, including ultrasonic imaging transducers, nanopositioning, and high‐performance capacitors.
Scarlet Kong, Nitish Kumar, S. Checchia, C. Cazorla, J. Daniels   +4 more
semanticscholar   +1 more source

Relaxor ferroelectrics with lanthanum perovskites

ISAF '92: Proceedings of the Eighth IEEE International Symposium on Applications of Ferroelectrics, 2003
Lanthanum perovskite compounds La(B/sub 1/2//sup I/B/sub 1/2//sup II/)O/sub 3/ (B/sup I/=Ni,Co,Mg; B/sup II/=Ti) are studied as candidates for stabilizers to form perovskite-type Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/ (PZN)-based ceramics. A conventional sintering technique is used to prepare ceramic samples with PZN-based solid solution. The ratios of the
T. Kanegae, Tadashi Takenaka
openaire   +2 more sources

Depolarization in a photosensitive relaxor ferroelectric

Physics of the Solid State, 2007
This paper reports a study of depolarization of a photosensitive relaxor ferroelectric Sr0.61Ba0.39Nb2O6 with 0.44 at. % La and 0.023 at. % Ce impurities at room temperature and under illumination of up to 0.22 mW/cm2 in the absorption band of the crystal.
V. V. Gladkiĭ, T. R. Volk, E. S. Ivanova   +2 more
openaire   +2 more sources

Dynamics in relaxor ferroelectric polymers

14th IEEE International Symposium on Applications of Ferroelectrics, 2004. ISAF-04. 2004, 2005
Normal ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer have been converted into relaxor ferroelectrics by introducing appropriate amount of defects into the original polar crystallites, which is achieved either by high-energy electron irradiation or by copolymerizing with a third bulky monomer 1,1-chlorofluoroethylene (
Qiming Zhang, Cheng Huang, Kailiang Ren, Dae-Yong Jeong, Feng Xia, Shihai Zhang, Robert J. Klein, F. Bauer   +7 more
openaire   +2 more sources

Development of “fragility” in relaxor ferroelectrics

Journal of Applied Physics, 2014
Relaxor ferroelectrics (RFs), a special class of the disordered crystals or ceramics, exhibit a pronounced slowdown of their dynamics upon cooling as glass-forming liquids, called the “Super-Arrhenius (SA)” relaxation. Despite great progress in glass-forming liquids, the “fragility” property of the SA relaxation in RFs remains unclear so far.
Lan Chen, Jun Fu, Yi-zhen Wang, Xiao-min Xiong, X. Frank Zhang, Jinxiu Zhang, Hai-Yan Wang   +6 more
openaire   +2 more sources

Correlation of dielectric dispersion with distributed Curie temperature in relaxor ferroelectrics

Journal of Applied Physics, 2019
The fascinating dielectric property of relaxor ferroelectrics is investigated on the basis of phase-transition dynamics within the mean-field theory.
Yong Chen, Kanghui Liu, Q. Luo, Ming Mei, Ganlin Chen, R. K. Pan, Y. Qi, W. Cao   +7 more
semanticscholar   +1 more source

Noise and Aging of Relaxor Ferroelectrics

AIP Conference Proceedings, 2003
Aging and noise are used to elucidate the types of frozen order formed in the relaxor regime. In PMN, PMN with 10% PT, and PLZT aging deep in the relaxor regime shows several features characteristic of spinglasses, including multiple independent susceptibility ‘holes’ formed at different aging temperatures.
Lambert K. Chao, Eugene V. Colla, Michael B. Weissman   +2 more
openaire   +2 more sources

Mixed systems of ferroelectric relaxors

Ferroelectrics, 2001
The random field based model for calculation of mixed systems of ferroelectric relaxors is proposed. Different orientations of electric dipoles related to different solid solution components and contribution of random field nonlinear and correlation effects were taken into account.
Maya D. Glinchuk, E. A. Eliseev, B. Hilczer, Vladimir A. Stephanovich   +3 more
openaire   +2 more sources

Dynamic response of relaxor ferroelectrics

Ferroelectrics, 2001
Abstract A dynamic spherical random-bond—random-field (SR-BRF) model based on the coupled polar cluster picture is formulated. Assuming stochastic flips of the cluster polarization, the Langevin equations of motion are written down, from which the linear and nonlinear dynamic dielectric permittivities are derived.
Robert Blinc, Raša Pirc, Vid Bobnar
openaire   +1 more source

Relaxor ferroelectrics and intrinsic inhomogeneity

Europhysics Letters (EPL), 2005
Relaxor ferroelectrics (RF) are characterized by diffuse ferroelectric transitions and high and frequency-dependent dielectric susceptibilities. Non-RFs show high dielectric responses only in the direct vicinity of the transition temperature whereas RFs exhibit high responses over a large temperature range.
Annette Bussmann-Holder, Takeshi Egami, Takeshi Egami, A. R. Bishop   +3 more
openaire   +2 more sources