Proton Transfer and a Dielectric Phase Transition in the Molecular Conductor (HDABCO+)2(TCNQ)3

2004 ◽  
Vol 126 (1) ◽  
pp. 291-294 ◽  
Author(s):  
Tomoyuki Akutagawa ◽  
Sadamu Takeda ◽  
Tatsuo Hasegawa ◽  
Takayoshi Nakamura
Keyword(s):  
Phase Transition ◽  
Proton Transfer ◽  
Dielectric Phase ◽  
Molecular Conductor

A-site cation with high vibrational motion in ABX3 perovskite effectively induces dielectric phase transition

2021 ◽  
Author(s):  
Yu-Zhen Wang ◽  
Zhi-Xu Zhang ◽  
Chang-Yuan Su ◽  
Tie Zhang ◽  
Da-Wei Fu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Vibrational Motion ◽  
Dielectric Phase ◽  
Hybrid Perovskite ◽  
Perovskite Material ◽  
A Site

A hybrid perovskite material with dielectric phase transition obtained by the introduction of a moving group.

Antiferroelectric Phase Transition in a Proton-Transfer Salt of Squaric Acid and 2,3-Dimethylpyrazine

2019 ◽  
Vol 141 (41) ◽  
pp. 16279-16287 ◽  
Author(s):  
Jeff Lengyel ◽  
Xiaoping Wang ◽  
Eun Sang Choi ◽  
Tiglet Besara ◽  
Rico Schönemann ◽  
...  
Keyword(s):  
Phase Transition ◽  
Proton Transfer ◽  
Squaric Acid ◽  
Antiferroelectric Phase

Switchable Dielectric Phase Transition Triggered by Pendulum-Like Motion in an Ionic Co-crystal

2018 ◽  
Vol 13 (19) ◽  
pp. 2916-2922 ◽  
Author(s):  
Qing Wang ◽  
Wan-Ying Zhang ◽  
Ping-Ping Shi ◽  
Qiong Ye ◽  
Da-Wei Fu
Keyword(s):  
Phase Transition ◽  
Dielectric Phase

Room-Temperature First-Order Phase Transition in a Charge-Disproportionated Molecular Conductor (MeEDO-TTF)2PF6

2008 ◽  
Vol 20 (24) ◽  
pp. 7551-7562 ◽  
Author(s):  
Xiangfeng Shao ◽  
Yoshiaki Nakano ◽  
Masafumi Sakata ◽  
Hideki Yamochi ◽  
Yukihiro Yoshida ◽  
...  
Keyword(s):  
Phase Transition ◽  
Order Phase Transition ◽  
Room Temperature ◽  
First Order ◽  
Molecular Conductor ◽  
First Order Phase Transition ◽  
A Charge ◽  
First Order Phase

[C5H12N]CdCl3: an ABX3 perovskite-type semiconducting switchable dielectric phase transition material

2017 ◽  
Vol 4 (9) ◽  
pp. 1485-1492 ◽  
Author(s):  
Aurang Zeb ◽  
Zhihua Sun ◽  
Tariq Khan ◽  
Muhammad Adnan Asghar ◽  
Zhenyue Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thermal Stability ◽  
Dielectric Properties ◽  
High Thermal Stability ◽  
Lead Free ◽  
Dielectric Phase ◽  
Perovskite Type

We report a new lead-free ABX3 perovskite-type hybrid, which displays high thermal stability, semiconducting and striking switchable dielectric properties.

scholarly journals A Simultaneous Magneto–Dielectric Phase Transition in RbCoBr3

2004 ◽  
Vol 73 (1) ◽  
pp. 254-261 ◽  
Author(s):  
Takashi Shirahata ◽  
Tota Nakamura
Keyword(s):  
Phase Transition ◽  
Dielectric Phase

Structural phase transition in crystals of the molecular conductor α′-(BDH-TTP)6[Hg(SCN)3][Hg(SCN)4]

2008 ◽  
Vol 53 (6) ◽  
pp. 1003-1008 ◽  
Author(s):  
S. V. Simonov ◽  
L. V. Zorina ◽  
S. S. Khasanov ◽  
R. P. Shibaeva ◽  
E. Canadell
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Molecular Conductor

scholarly journals Crystal Structure and Dielectric Property of Endohedral Lithium Fullerene

2014 ◽  
Vol 70 (a1) ◽  
pp. C195-C195
Author(s):  
Shinobu Aoyagi ◽  
Kunihisa Sugimoto ◽  
Hiroshi Okada ◽  
Norihisa Hoshino ◽  
Tomoyuki Akutagawa
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Dielectric Property ◽  
Low Temperature ◽  
Dielectric Permittivity ◽  
Single Crystal ◽  
Temperature Dependence ◽  
Structure Analysis ◽  
X Ray ◽  
Dielectric Phase

Endohedral lithium fullerene Li+@C60 can have a dielectric polarization by the off-centered location of the Li+ cation inside the C60 cage. The x-ray structure analysis of the PF6– salt [Li@C60](PF6) revealed that the Li+ cation occupies two off-centered equivalent positions at 20 K and hence the crystal is non-polar [1]. The disordered structure at low temperature is explained by a static orientation disorder of polar Li+@C60 cations and/or a dynamic tunneling of the Li+ cation inside the C60 cage. The Li+ tunneling would be suppressed by an intermolecular interaction at lower temperature and a dielectric phase transition might be induced. We reveal the dielectric property and crystal structure of [Li@C60](PF6) below 20 K in this study. The temperature dependence of the dielectric permittivity was measured for the single crystal down to 9 K. The dielectric permittivity increases with decreasing temperature according to the Curie-Weiss law. Such a behavior was also observed in H2O@C60 crystal but not in empty C60 crystal [2]. No dielectric phase transition was observed in H2O@C60 down to 8 K. In contrast, a dielectric anomaly suggesting a phase transition was observed in [Li@C60](PF6) around 18 K. The single-crystal x-ray diffraction experiment below 20 K was also performed at SPring-8 BL02B1. The crystal has a cubic structure at 20 K [1]. The temperature dependence of the cubic lattice constant shows no anomaly around 18 K. However, diffraction peaks that are forbidden for the given structure appear below 18 K. Thus the crystal symmetry is lowered by the dielectric phase transition. We present the result of the crystal structure analysis of the newly discovered low-temperature phase.

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