Detection of a precursor in a strong first-order structural phase transition by a fluorescence-lifetime measurement

1991 ◽  
Vol 66 (16) ◽  
pp. 2112-2115 ◽  
Author(s):  
T. Shigenari ◽  
E. Kojima ◽  
Y. Ino ◽  
K. Abe
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Fluorescence Lifetime ◽  
Structural Phase ◽  
Lifetime Measurement ◽  
First Order ◽  
Fluorescence Lifetime Measurement

Temperature-triggered order–disorder phase transition in molecular-ionic material N-butyldiethanolammonium picrate monohydrate

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69546-69550 ◽  
Author(s):  
Tariq Khan ◽  
Muhammad Adnan Asghar ◽  
Zhihua Sun ◽  
Chengmin Ji ◽  
Lina Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Dielectric Materials ◽  
Disorder Phase Transition ◽  
First Order ◽  
Oxygen Atoms

We report an organic–ionic material that undergoes a first-order structural phase transition, induced by order–disorder of oxygen atoms in picrate anion. This strategy offers a potential pathway to explore new switchable dielectric materials.

scholarly journals Near-room-temperature reversible giant barocaloric effects in [(CH3)4N]Mn[N3]3 hybrid perovskite

2020 ◽  
Vol 1 (9) ◽  
pp. 3167-3170 ◽  
Author(s):  
Jorge Salgado-Beceiro ◽  
Ariel Nonato ◽  
Rosivaldo Xavier Silva ◽  
Alberto García-Fernández ◽  
Manuel Sánchez-Andújar ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase ◽  
Inorganic Perovskite ◽  
First Order ◽  
Hybrid Perovskite

We report giant reversible barocaloric effects in [(CH3)4N]Mn[N3]3 hybrid organic–inorganic perovskite, near its first-order cubic-monoclinic structural phase transition at T0 ∼ 305 K.

The first-order structural phase transition of YSb

2010 ◽  
Vol 88 (8) ◽  
pp. 591-596
Author(s):  
Hongzhi Fu ◽  
WenFang Liu ◽  
Tao Gao
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Density Functional ◽  
Theoretical Calculations ◽  
Structural Phase ◽  
Density Functional Theory Method ◽  
Generalized Gradient ◽  
First Order ◽  
Thermal Expansion Coefficients ◽  
Increasing Temperature

The high-pressure induced phase transition of YSb has been studied using the density functional theory method within the generalized gradient approximation. It was found that the first-order structural phase transition began to occur at 30.8 GPa, agreeing well with available experiments and theoretical calculations. In this phase transition, we do not find changes in the heat capacity and thermal expansion coefficients at lower and higher temperature, but the transition pressures decrease with temperature. The bulk modulus and Debye temperature decrease with increasing temperature, while they increase with increasing pressure. Also, the density of states and band structure of these two compounds with B1 and B2 structures have been presented and analyzed.

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