Fig. 1 (IMAGE)
Caption
Basic structure of the superionic conductor identified in this study: Host particles form a stable crystalline framework through strong steric repulsion. Carrier particles, on the other hand, exist at low density in the interstitial spaces between the host particles. Owing to weak long-range interactions (dashed lines), they form a crystalline structure at low temperatures. As the temperature increases, however, we found that the carrier particles melt prior to the host particles while the host crystalline framework remains intact; this process is known as sublattice melting.
Credit
Takeshi Kawasaki
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CC BY