Time dependent phase transition in K₂ZnBr₄

Fuminao Shimizu Department of Electronic Engineering, College of Science and Engineering, Iwaki Meisei University, 5-5-1 lino, Chuohdai, Iwaki-shi, Fukushima-ken, 970, Japan

Masaaki Takashige Department of Electronic Engineering, College of Science and Engineering, Iwaki Meisei University, 5-5-1 lino, Chuohdai, Iwaki-shi, Fukushima-ken, 970, Japan

Shozo Sawada Department of Electronic Engineering, College of Science and Engineering, Iwaki Meisei University, 5-5-1 lino, Chuohdai, Iwaki-shi, Fukushima-ken, 970, Japan

Abstract

K₂ZnBr₄ undergoes the first order phase transition at around 470 K from the low temperature α-state with Sr₂GeS₄ structure to the high temperature β-state with β-K₂SO₄ structure. The metastable β-state was realized at low temperatures by rapid cooling and the recovering process toward the essentially stable α phase was investigated by measuring dielectric constants as a function of time.

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Time dependent phase transition in K₂ZnBr₄

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Time dependent phase transition in K₂ZnBr₄