Structural phase transitions at high-temperature in double perovskite Sr2GdRuO6

2012 ◽  
Vol 407 (16) ◽  
pp. 3150-3154 ◽  
Author(s):  
C.A. Triana ◽  
L.T. Corredor ◽  
D.A. Landínez Téllez ◽  
J. Roa-Rojas
Keyword(s):  
Phase Transitions ◽  
High Temperature ◽  
Structural Phase ◽  
Double Perovskite ◽  
Structural Phase Transitions

scholarly journals Проявление структурных фазовых переходов в кристалле Rb-=SUB=-2-=/SUB=-KLuF-=SUB=-6-=/SUB=- в спектрах комбинационного рассеяния света

2019 ◽  
Vol 126 (4) ◽  
pp. 423
Author(s):  
А.С. Крылов ◽  
А.Н. Втюрин ◽  
В.Н. Воронов ◽  
С.Н. Крылова
Keyword(s):  
Phase Transitions ◽  
Monoclinic Phase ◽  
Tricritical Point ◽  
Structural Phase ◽  
Double Perovskite ◽  
Spectral Lines ◽  
The Other ◽  
Structural Phase Transitions ◽  
Two Phase ◽  
Temperature Dependences

AbstractThe Raman spectra of an Rb_2KLuF_6 crystal are studied in the temperature range from 8 to 375 K, which includes two phase transitions: one of which proceeds from a cubic to a tetragonal phase, while the other transition takes place from a tetragonal to a monoclinic phase. An analysis of the temperature dependences of parameters of spectral lines shows that the former transition is of the second kind, while the latter transition is of the first kind, close to the tricritical point. It is shown that the structural phase transitions in the Rb_2KLuF_6 double perovskite are not associated with disordering. The former transition is associated with rotations of LuF_6 octahedra around the fourth-order axis, while the latter transition is related with rotations of octahedra and displacements of rubidium ions.

High temperature structural phase transitions in SrSnO3 perovskite

2005 ◽  
Vol 40 (3) ◽  
pp. 507-520 ◽  
Author(s):  
Marianne Glerup ◽  
Kevin S. Knight ◽  
Finn Willy Poulsen
Keyword(s):  
Phase Transitions ◽  
High Temperature ◽  
Structural Phase ◽  
Structural Phase Transitions

scholarly journals An organic-inorganic hybrid double perovskite-type cage-like crystal (MA)2KBiCl6 (MA = methylammonium Cation) with dielectric switch behavior

2021 ◽  
Author(s):  
Lin Xiang ◽  
Yi-Fang Huang ◽  
Yan Feng ◽  
Na Wang ◽  
Rong-Meng Liao ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Structural Analysis ◽  
Single Crystal ◽  
Structural Phase ◽  
Double Perovskite ◽  
Structural Phase Transitions ◽  
Inorganic Hybrid ◽  
Crystal Structural ◽  
Perovskite Type

An organic-inorganic hybrid double perovskite-type cage-like crystal, (MA)2KBiCl6 (MA = methylammonium Cation, 1), was synthesized. It undergoes structural phase transitions at 336/326 K (heating/cooling). Various-temperature single-crystal structural analysis reveal that...

Structural phase transitions coupled with prominent dielectric anomalies and dielectric relaxation in [(CH3)3NH]2[KCo(CN)6] and mixed [(CH3)3NH]2[KFexCo1−x(CN)6] double perovskite hybrids

2020 ◽  
Vol 49 (6) ◽  
pp. 1830-1838 ◽  
Author(s):  
Magdalena Rok ◽  
Bartosz Zarychta ◽  
Marcin Moskwa ◽  
Błażej Dziuk ◽  
Wojciech Medycki ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Dielectric Relaxation ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Double Perovskite ◽  
Mixed Crystals ◽  
Structural Phase Transitions

Structural phase transition and dielectric anomalies measured in pure and mixed crystals (TrMAFexCo1−x).

Reversible structural phase transitions and switchable dielectric behaviours in a cyanometallate-based double perovskite-type cage compound: [C3H4NS]2[KCo(CN)6]

2020 ◽  
Vol 4 (3) ◽  
pp. 918-923 ◽  
Author(s):  
Zhi-Xin Gong ◽  
Qin-Wen Wang ◽  
Jia-Jun Ma ◽  
Jia-Ying Jiang ◽  
Dian-Yu E ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Structural Phase ◽  
Double Perovskite ◽  
Structural Phase Transitions ◽  
Cage Compound ◽  
Switch Type ◽  
Thermal Vibrations ◽  
Reversible Phase ◽  
Perovskite Type

Reversible phase transitions in [C3H4NS]2[KCo(CN)6] exhibit switch-type dielectric transitions around 210 K and 237 K. The small displacements and/or thermal vibrations of the cations cause the phase transitions.

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