Ferroelectricity of trimethylammonium bromide below room temperature

2020 ◽  
Vol 8 (17) ◽  
pp. 5868-5872 ◽  
Author(s):  
Zhangran Gao ◽  
Yuying Wu ◽  
Zheng Tang ◽  
Xiaofan Sun ◽  
Zixin Yang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Curie Temperature ◽  
Ferroelectric Phase Transition ◽  
Room Temperature ◽  
Ferroelectric Phase ◽  
First Order

Ferroelectricity of trimethylammonium bromide was discovered near room temperature, which undergoes a first-order paraelectric–ferroelectric phase transition at the Curie temperature around 286 K.

Ferroelectric Properties in Organic-inorganic Hybrid Material Tris(2-Hydroxyethyl) ammonium Trichloro Cadmium(Ⅱ)

2022 ◽  
Author(s):  
Zheng Tang ◽  
Xiaofan Sun ◽  
Zhangran Gao ◽  
Dong Li ◽  
Shulin Jiao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Aqueous Solution ◽  
Hybrid Material ◽  
Ferroelectric Phase Transition ◽  
Room Temperature ◽  
Ferroelectric Phase ◽  
Ferroelectric Properties ◽  
Inorganic Hybrid ◽  
Space Group ◽  
Inorganic Hybrid Material

Organic-inorganic hybrid ferroelectric Tris(2-Hydroxyethyl) ammonium trichloro cadmium(Ⅱ) (TATC) with a space group of P21/c at room temperature was obtained in aqueous solution. There goes a paraelectric-ferroelectric phase transition (from monoclinic...

Surface and size effects on the Ferroelectric Phase Transition and Surface Polarization of Thin Films: Monte Carlo Simulations

1997 ◽  
Vol 493 ◽  
Author(s):  
J. Romero ◽  
L. F. Fonseca
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
First Order ◽  
Surface Polarization ◽  
Ferroelectric Phase Transition Temperature ◽  
Model Hamiltonian

ABSTRACTThe macroscopic polarization of ferroelectric thin films was studied by Monte Carlo simulations using a Transverse Ising Model Hamiltonian with four-spins interactions. The dependence of the ferroelectric phase transition temperature, Tc, on the thickness of the film was obtained resulting in a shifting of Tc towards lower temperatures and a change from first-order to second-order phase transition as the thickness of the film is reduced. Comparison between the surface and internal order was carried out by the calculation of layer-averaged polarizations as a function of the sample temperature and the surface interaction parameters. These comparisons show that increasing disorder at the surface can be reverted by increasing the four-spins surface interactions.

Origin of the first-order ferroelectric phase transition in K 0.957 Li 0.043 TaO 3 solid solution

2016 ◽  
Vol 84 ◽  
pp. 298-302 ◽  
Author(s):  
Zbigniew Trybuła ◽  
Jan Dec ◽  
Seweryn Miga ◽  
Szymon Łoś ◽  
Małgorzata Trybuła
Keyword(s):  
Phase Transition ◽  
Solid Solution ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
First Order
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