Perovskite-like compounds with bismuth layer structure: Some new materials and phase transitions期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Perovskite-like compounds with bismuth layer structure: Some new materials and phase transitions

Authors:	LA Shebanov LV Korzunova

Affiliation:	Institute of Solid State Physics, Latvian State University, 8 Kengaraga St., 226063 Riga, USSR

Abstract:	Simultaneous heterovalent substitutions in both the cationic sites of the already known bismuth layer type compound Bi₃TiNbO_g have been undertaken. Further, new compounds with an orthorhombic unit cell have been found: $Bi_{2} Pb_{13} Bi_{23} TiNb_{23} W_{13} O_{g}, Bi_{2} Pb_{12} Bi_{12} TiNb_{12} W_{12} O_{g}$ and $Bi_{2} Pb_{23} Bi_{13} TiNb_{13} W_{23} O_{g}$ . Their crystallographic characteristics have been determined. Phase transitions have been studied with the aid of dielectric measurements. The relations between crystallographic properties and peculiarities of phase transitions have been discussed.

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