Ion Conduction and Complicated Phase Transition Behaviors in an Organic Ion Plastic Crystal, [Tetra-n-butylammonium]2[Ni(maleonitriledithiolate)2]

2020 ◽  
Vol 124 (38) ◽  
pp. 20722-20729
Author(s):  
Yin Qian ◽  
Dong-Sheng Shao ◽  
Wan-Wan Yao ◽  
Ningkun Wan ◽  
Xiao-Zu Wang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Plastic Crystal ◽  
Ion Conduction

High-energy X-ray diffraction study on phase transition asymmetry of plastic crystal neopentylglycol

2021 ◽  
Author(s):  
Zhe Zhang ◽  
Yanna Chen ◽  
Ji Qi ◽  
Zhao Zhang ◽  
Koji Ohara ◽  
...  
Keyword(s):  
Phase Transition ◽  
Diffraction Study ◽  
High Energy ◽  
Plastic Crystal ◽  
X Ray Diffraction ◽  
X Ray

Fast-Ion Conduction in the Presence of a Lattice Phase Transition

1985 ◽  
Vol 130 (2) ◽  
pp. 483-487
Author(s):  
D. Bingham ◽  
C. H. Burton
Keyword(s):  
Phase Transition ◽  
Ion Conduction ◽  
Fast Ion

Elastic Softening at the Order-Disorder Phase Transition in a Plastic Crystal RbNO2

1981 ◽  
Vol 20 (12) ◽  
pp. L917-L919 ◽  
Author(s):  
Shunsuke Hirotsu ◽  
Masaaki Miyamoto ◽  
Ikuo Yamamoto
Keyword(s):  
Phase Transition ◽  
Plastic Crystal ◽  
Disorder Phase Transition ◽  
Elastic Softening

Phase Transitions in Solid Methane Up to 60 Kbar

1983 ◽  
Vol 22 ◽  
Author(s):  
N.J. Trappeniers
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Phase Transitions ◽  
Kinetic Energy ◽  
Spherical Shape ◽  
Plastic Crystal ◽  
Cubic Symmetry ◽  
Profound Influence ◽  
Rotational Freedom ◽  
Solid Methane

Solid methane has been a favourite subject for the study of phase transitions ever since the discovery by Clusius [1] of the phase transition α → β at 20.4 K in CH4. The reasons for the sustained interest in solid CH4 may be attributed to the following facts. i. The CH4 molecule has an almost spherical shape with a slight TD anisotropy. As a result, CH4 crystallizes below 90.7 K into a plastic crystal, α, of cubic symmetry, exhibiting almost complete rotational freedom of the molecules. ii. The CH4 molecule is very small in size with a low moment of inertia (I × 1040 g cm2 = 5.34 in CH4 and 10.64 in CD4), leading to a large rotational kinetic energy and related quantum effects at low temperature. iii. The protons in CH4 and the deuterons in CD4 carry a nuclear spin resp. Ip = 1/2 and I. = 1, which gives rise to spin-isomerism. Thus, CH4 has three spin varieties, meta (A1, In = 2), ortho (T2, in = 1) and para (E, In = 0). The isomerism may be expected to have profound influence on the phase diagram of solid methane.

A Linear Scaling Law for Predicting Phase Transition Temperature via Averaged Effective Electronegativity Derived from A2M3O12-based Compounds

2021 ◽  
Author(s):  
Huanli Yuan ◽  
Chunyan Wang ◽  
QiLong Gao ◽  
Gaojie Zeng ◽  
Juan Guo ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thermal Expansion ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Scaling Law ◽  
Negative Thermal Expansion ◽  
Linear Scaling ◽  
Ion Conduction

Chemical flexibility of A2M3O12-based compounds enables design of materials with versatile functionalities such as ferroelastic switching, ion conduction and negative thermal expansion (NTE) above ferroelastic transition temperature (Tt), promising for...

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