This chapter describes physical properties governed by normal atomic bonds. One of the biggest and long-standing problems is glass transition, at which specific heat, thermal expansion, and viscosity exhibit marked changes. Thermal crystallization is also studied extensively, specifically in relation to phase-change memories. We also take brief views of structural properties at low and room temperatures. Importance of the atomic coordination number, which affects structural properties, is also discussed. There exist magic coordination numbers at 2.4 (Phillips) and 2.67 (Tanaka); the origin of these numbers is discussed. We also refer to ion transport.
KeywordsGlass transition Kauzmann temperature Free volume Fragility Crystallization Magic number Ionic conduction
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