Results 161 to 170 of about 684 (200)

Antiferroelectricity in TID2PO4

Physics Letters A, 1980
Abstract Polarization versus electric field double hysteresis loops along the b -axis of TID 2 PO 4 were observed. From this fact and the permittivity versus temperature characteristic, the low temperature phase of TID 2 PO 4 was confirmed to be antiferroelectric.
Naohiko Yasuda, Sanji Fujimoto, Toru Asano   +2 more
openaire   +1 more source

Theory of Antiferroelectric Crystals

Physical Review, 1951
An antiferroelectric state is defined as one in which lines of ions in the crystal are spontaneously polarized, but with neighboring lines polarized in antiparallel directions. In simple cubic lattices the antiferroelectric state is likely to be more stable than the ferroelectric state.
openaire   +1 more source

Computational modeling of uniaxial antiferroelectric and antiferroelectric-like actuator

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Recently, antiferroelectric and antiferroelectric-like materials have regained interest for electronic devices, such as field-effect transistors, memory, and transducers. Particularly, in micro/nano-electromechanical coupling systems, such as actuators, these innovative materials, with their peculiar phase transition between antiferroelectric and ...
Nguyen, Binh H., Rochus, Véronique
openaire   +1 more source

Antiferroelectric-Ferroelectric Switching in a Simple “Kittel” Antiferroelectric

Journal of the Physical Society of Japan, 1967
The intrinsic switching path for the electric field enforced transition from antiferroelectric to ferroelectric states has been computed for the simple Kittel linear antiferroelectric. The generalized switching curves give values of the polarization, free energy, and dielectric susceptibility as a function of applied field for a number of different ...
openaire   +1 more source

Analogies between antiferromagnets and antiferroelectrics

Physica Status Solidi (a), 1980
Ferro- and antiferromagnetism in the Laves phase TiBe2−xCuxx occurs for 0.1 ⪅ x ⪅ 0.2 and below x ⪅ 0.1, respectively, and is thought to be due to competing mechanisms. Analogous competing, and also cooperative mechanisms in the historically first antiferroelectric NH4H2PO4 and its solid solutions with TIH2PO4 and with the ferroelectric KH2PO4 are ...
C. P. Enz, B. T. Matthias
openaire   +1 more source

High Energy Storage Density in NaNbO3 Antiferroelectrics With Double Hysteresis Loop

Journal of Materiomics
Antiferroelectrics (AFEs) possess great potential for high performance dielectric capacitors, due to their distinct double hysteresis loop with high maximum polarization and low remnant polarization.
Toyohisa Fujita, Ye Zhu
exaly   +2 more sources

On the appearance of antiferroelectricity: The effect of polarization and conjugation in antiferroelectric liquid crystals

Ferroelectrics, 1993
Abstract In order to clarify the role of polarization and the conjugation in antiferroelectric liquid crystal molecules (AFLC), systematic series of AFLC compounds containing fluoro-substituent have been synthesized. The polarization of peripheral region of the chiral center and the conjugation along the long axis of an AFLC molecule are responsible ...
Y. Suzuki, O. Nonaka, Y. Koide, N. Okabe, T. Hagiwara, I. Kawamura, N. Yamamoto, Y. Yamada, T. Kitazume   +8 more
openaire   +1 more source

Emergence of ferroelectricity in antiferroelectric nanostructures

Nanotechnology, 2016
Abstract First-principles-based finite-temperature simulations are used to predict the emergence of ferroelectricity in antiferroelectric nanostructures made of PbZrO 3 . The phenomenon is expected to occur in antiferroelectric nanodots, nanowires, and thin films with good ...
B K, Mani, R, Herchig, E, Glazkova, S, Lisenkov, I, Ponomareva   +4 more
openaire   +2 more sources

Electrooptics of Antiferroelectric PDLC

Molecular Crystals and Liquid Crystals, 2002
Polymer-dispersed liquid crystal composites containing antiferroelectric smectic phase have been obtained. An electro-optical behaviour of those systems has been studied. The effect different factors on PDAFLC properties has been discussed.
STANISłAW J. KłOSOWICZ, KRZYSZTOF L. CZUPRYńSKI   +1 more
openaire   +1 more source

Ferroelectricity in antiferroelectric NaNbO₃crystal

Journal of Physics: Condensed Matter, 2014
Sodium niobate (NaNbO3, or NNO) is known to be antiferroelectric at temperatures between 45 and 753 K. Here we show experimentally the presence of the ferroelectric phase at temperatures between 100 and 830 K in the NNO crystals obtained by top-seeded solution growth.
M, Tyunina, A, Dejneka, D, Rytz, I, Gregora, F, Borodavka, M, Vondracek, J, Honolka   +6 more
openaire   +2 more sources