Ferroelectricity in K2ZnI4

Fuminao Shimizu; Takayuki Anzai; Hiroshi Sekiguchi; Masaaki Takashige; Shozo Sawada

doi:10.1143/jpsj.63.437

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

Ferroelectricity in K₂ZnI₄

Fuminao Shimizu, Takayuki Anzai, Hiroshi Sekiguchi, Masaaki Takashige, Shozo Sawada

著者情報

キーワード: K₂ZnI₄, ferroelectricity, phase transition, Sr₂GeS₄-structure

ジャーナル認証あり

1994 年 63 巻 2 号 p. 437-440

DOI https://doi.org/10.1143/jpsj.63.437

詳細

抄録

Single crystals of K₂ZnI₄ with monoclinic Sr₂GeS₄ structure prepared by theBridgman method were investigated through DTA and dielectric measurements. Ferroelectric activity was found below 270, K, where the b-direction dielectric constant showed a sharp peak. The spontaneous polarization measured by the pyroelectric charge method was 0.32, μ C/cm² at 100, K. The dielectric constant also showed a small stepwise anomaly around 190, K.