Crystal structure and multiferroic properties of Gd-substituted BiFeO3
authors Khomchenko, VA; Kiselev, DA; Bdikin, IK; Shvartsman, VV; Borisov, P; Kleemann, W; Vieira, JM; Kholkin, AL
nationality International
journal APPLIED PHYSICS LETTERS
author keywords antiferromagnetic materials; bismuth compounds; crystal structure; ferroelectric materials; gadolinium compounds; multiferroics; solid-state phase transformations; spontaneous magnetisation; X-ray diffraction
keywords WEAK FERROMAGNETISM; CERAMICS; PHASE
abstract Room-temperature crystal structure, local ferroelectric, and magnetic properties of the Bi1-xGdxFeO3 (x=0.1,0.2,0.3) polycrystalline samples have been investigated by x-ray diffraction, piezoresponse force microscopy, and magnetometry techniques. Performed measurements have revealed a sequence of the composition-driven structural phase transitions R3c -> Pn2(1)a (occurs at x similar to 0.1) and Pn2(1)a -> Pnma (takes place within the concentrational range of 0.2 < x < 0.3). The latter structural transformation is attributed to the substitution-induced suppression of the polar displacements. Gd substitution has been shown to effectively induce the appearance of the spontaneous magnetization, thus indicating a promising way for improving multiferroic properties of antiferromagnetic BiFeO3.
publisher AMER INST PHYSICS
issn 0003-6951
year published 2008
volume 93
issue 26
digital object identifier (doi) 10.1063/1.3058708
web of science category Physics, Applied
subject category Physics
unique article identifier WOS:000262225700050
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journal impact factor 3.597
5 year journal impact factor 3.4
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