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Dielectric and pyroelectric properties of (CH3NH3)3Me2Br9(Me = Sb, Bi) crystals in the ferroelectric phase transition regions

R. Jakubas, G. Bator, L. Sobczyk, Józef Mróz

Abstract

Dielectric and pyroelectric properties of isomorphous crystals (CH3NH3)3Me2Br9 (Me = Sb, Bi) in the low temperature region have been compared. The observed dielectric dispersion in the vicinity of ferroelectric phase transition of both crystals revealed the complex nature. The ferroelastic domain structure in all low temperature phases of these two salts exhibits considerable similarity.

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Key concepts: Pyroelectricity, Ferroelectricity, Materials science, Dielectric, Dielectric dispersion, Phase transition, Dispersion (optics), Phase (matter)