Glass Physics and Chemistry

, Volume 41, Issue 4, pp 421–425 | Cite as

Crystalline structure, thermal expansion, and electrotransport properties of Bi0.91Ln0.09FeO3, BiFe0.91Mn0.09O3, and Bi0.91Ln0.09Fe0.91Mn0.09O3 (Ln = Nd, Ho) multiferroics

Article

Abstract

Bi0.91Ln0.09FeO3, BiFe0.91Mn0.09O3 and Bi0.91Ln0.09Fe0.91Mn0.09O3 (Ln = Nd, Ho) solid solutions have been synthesized, the parameters of their crystalline structure have been determined, and thermal expansion, electrical conductivity and thermal EMF have been studied at temperatures higher than the ambient temperature. It has been established that the solid solutions have a rhombohedral structure (space group R3c) and are semiconductors of the p-type, whose electrical conductivity is higher than that of nonsubstituted bismuth ferrite BiFeO3, the coefficient of thermal EMF sharply decreases at the partial substitution of iron with manganese, and the coefficient of linear thermal expansion varies in the ranges of (9.22–13.4) × 10–6 K–1. The parameters of charge carriers transfer in the (Bi,Ln)(Fe,Mn)O3 (Ln = Nd, Ho) phases have been determined.

Keywords

perovskite multiferroic bismuth ferrite thermal expansion electrical conductivity thermal EMF 

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© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.Belarusian State Technological UniversityMinskBelarus

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