scholarly journals Ion Hopping and Constrained Li Diffusion Pathways in the Superionic State of Antifluorite Li2O

Entropy ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 227 ◽  
Author(s):  
◽  
Keyword(s):  
Superionic State

Studies of effects of trivalent impurity ions on the transition to the superionic state of fluorites

1981 ◽  
Vol 14 (4) ◽  
pp. 329-335 ◽  
Author(s):  
C R A Catlow ◽  
J D Comins ◽  
F A Germano ◽  
R T Harley ◽  
W Hayes ◽  
...  
Keyword(s):  
Superionic State ◽  
Impurity Ions

Diffuse phase transition from the superionic to non-superionic state in Cu1.8Se single crystal

2013 ◽  
Vol 58 (4) ◽  
pp. 622-627 ◽  
Author(s):  
N. N. Bikkulova ◽  
Yu. M. Stepanov ◽  
L. V. Bikkulova ◽  
A. R. Kurbangulov ◽  
A. Kh. Kutov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Diffuse Phase Transition ◽  
Superionic State ◽  
Diffuse Phase

Thermal Jamming of Ions in the Superionic State of UO2

MRS Advances ◽  
2018 ◽  
Vol 3 (31) ◽  
pp. 1777-1781 ◽  
Author(s):  
Dillon Sanders ◽  
Jacob Eapen
Keyword(s):  
Hard Sphere ◽  
Atomistic Simulations ◽  
Dynamical Heterogeneity ◽  
Oxygen Ions ◽  
Superionic State ◽  
Simulation Results ◽  
Characteristic Features ◽  
Low Dimensional ◽  
Superionic Conduction ◽  
Jammed State

ABSTRACTThe oxygen ions in the high temperature superionic state of uranium dioxide (UO2) are known to be in an arrested or jammed state, exhibiting characteristic features of jammed kinetics such as low dimensional string-like ion hopping and dynamical heterogeneity (DH). This thermally-jammed state entails a configurational entropic cost. Using atomistic simulations and the 2PT method, we compute the solid-like (vibrational) and hard sphere-like (configurational) contributions to the total entropy across a temperature range of 1500 K to 2800 K that envelop both the onset of superionic conduction (2000 K) and the second order λ-transition (2610 K). To properly account for the thermally jammed state of the ions, we use an equation of state that is appropriate for the metastable fluid branch. Our simulation results are in excellent agreement with the entropy data extracted from specific heat experiments with a mean error of less than 2%.

Thermal ion emission from crystalline SrCl 2 at the temperatures of phase transition to the superionic state

2002 ◽  
Vol 511 (1-3) ◽  
pp. 331-339 ◽  
Author(s):  
M.F Butman ◽  
A.A Smirnov ◽  
L.S Kudin ◽  
H Dabringhaus
Keyword(s):  
Phase Transition ◽  
Superionic State ◽  
Ion Emission
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