Results 41 to 50 of about 115,553 (174)

Suppression of interfacial polarization via enhancement of entropy, grain resistance and optical band-gap strategies in perovskite ceramics

Scientific Reports
The development of dielectric ceramics for energy storage applications requires suppression of interfacial polarization (IFPs) and elevation of grain resistance to obtain high energy storage density and foster breakdown strength.
Amira A Kamal, Asmaa Al-Rasheedi, K. A. Aly, Abd El-razek Mahmoud   +3 more
doaj   +1 more source

Study on Paramagnetic Interactions of (CH₃NH₃)₂CoBr₄ Hybrid Perovskites Based on Nuclear Magnetic Resonance (NMR) Relaxation Time

Molecules, 2019
The thermal properties of organic−inorganic (CH3NH3)2CoBr4 crystals were investigated using differential scanning calorimetry and thermogravimetric analysis. The phase transition and partial decomposition temperatures were observed at 460 K and 572
Ae Ran Lim, Sun Ha Kim
doaj   +1 more source

Deterministic control of ferroelectric polarization by ultrafast laser pulses

Nature Communications, 2022
Controlling the electric polarization in ferroelectric materials at room temperature is an important aspect in the design of novel ferroelectric-based devices.
Peng Chen, Charles Paillard, Hong Jian Zhao, Jorge Íñiguez, Laurent Bellaiche   +4 more
doaj   +1 more source

Pressure on charged domain walls and additional imprint mechanism in ferroelectrics

, 2007
The impact of free charges on the local pressure on a charged ferroelectric domain wall produced by an electric field has been analyzed. A general formula for the local pressure on a charged domain wall is derived considering full or partial compensation
A. K. Tagantsev, J. Fousek, J. Novak, L. D. Landau, P. Mokrý, V. N. Nechaev   +5 more
core   +1 more source

Dielectric and polarization experiments in high loss dielectrics: a word of caution [PDF]

, 2008
The recent quest for improved functional materials like high permittivity dielectrics and/or multiferroics has triggered an intense wave of research. Many materials have been checked for their dielectric permittivity or their polarization state.
Lines M. E., M. A. Subramanian, M. Maglione, Maglione M., Sze S. M., Van Turnhout J.   +5 more
core   +4 more sources

Aging effect evolution during ferroelectric-ferroelectric phase transition: A mechanism study

AIP Advances, 2013
Aging can significantly modify the dielectric, piezoelectric, and ferroelectric performance of ferroelectrics. However, little attention has been paid to the aging effect during ferroelectric-ferroelectric phase transitions that is essentially correlated
Zuyong Feng, Zhenxiang Cheng, Dongqi Shi, Shixue Dou   +3 more
doaj   +1 more source

Tetragonal tungsten bronze compounds: relaxor vs mixed ferroelectric - dipole glass behavior

, 2010
We demonstrate that recent experimental data (E. Castel et al J.Phys. Cond. Mat. {\bf 21} (2009), 452201) on tungsten bronze compound (TBC) Ba$_2$Pr$_x$Nd$_{1-x}$FeNb$_4$O$_{15}$ can be well explained in our model predicting a crossover from ...
Boatner L A, Castel E, de Almeida J R L, Fischer K H, Korenblit I Ya, Smolenskii G A, V A Stephanovich   +6 more
core   +1 more source

Finite size and intrinsic field effect on the polar-active properties of the ferroelectric-semiconductor heterostructures

, 2009
Using Landau-Ginzburg-Devonshire approach we calculated the equilibrium distributions of electric field, polarization and space charge in the ferroelectric-semiconductor heterostructures containing proper or incipient ferroelectric thin films.
A. D. Krutov, A. N. Morozovska, A. Y. Borisevich, E. A. Eliseev, G. A. Smolenskii, H. Y. Hwang, J. F. Scott, M. A. Itskovsky, P. Maksymovych, S. M. Sze, S. V. Kalinin, S. V. Svechnikov, V. M. Fridkin, V. Y. Shur   +13 more
core   +1 more source

Ferroelectric Phase Transitions in Ultra-thin Films of BaTiO3 [PDF]

, 2007
We present molecular dynamics simulations of a realistic model of an ultrathin film of BaTiO$_3$ sandwiched between short-circuited electrodes to determine and understand effects of film thickness, epitaxial strain and the nature of electrodes on its ...
Jaita Paul, K. Binder, M. E. Lines, Takeshi Nishimatsu, Umesh V. Waghmare, Yoshiyuki Kawazoe   +5 more
core   +2 more sources

Superior disrupting ferroelectric phase of (Ba Sr)Nb2O6 tungsten bronze structure via high entropy and cations disorder for ultrahigh breakdown strength

Scientific Reports
High configurational entropy (ΔS) dielectric ceramics possess a unique competitive advantage in electronic applications due to their high-power density and excellent reliability.
Marwa Kamal, Manal Mohammed Alhazmi, Abd El-razek Mahmoud   +2 more
doaj   +1 more source