Thallium-tri-hydrogen selenite, T1H<sub>3</sub>(SeO<sub>3</sub>)<sub>2</sub>- a new menber of alkaline tri-hydrogen selenite crystal family
L. A. Shuvalov
Institute of Crystallography, Moscow, USSRВ. А. Бондаренко
Polytechnical Institute, Voronezh, USSRV. M. VarikashPhysicotechnical InstituteС. А. Гриднев
Polytechnical Institute, Voronezh, USSRИ. П. Макарова
Institute of Crystallography, Moscow, USSRV. I. Simonov
Institute of Crystallography, Moscow, USSR
ABI
Аннотация
Abstract T1H3(SeO3)2 crystal has been grown for the first time, and Some of its properties have been measured in the range of 10–293K. Two phase transitions have been found: T αβ = Tβα =56.4K and Tβγ= 51.6K (Tγβ =52.9K). Crystal structure of α -phase has been determined (P 212121, z = 4). A conclusion is made that γ-phase is segnetoelectric.
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