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Enhanced ferroelectricity and ferromagnetism in La1−xBixCrO3 by Bi3+ substitution

Published online by Cambridge University Press:  31 January 2011

H-Y. Guo ,
J.I.L. Chen ,
Z-G. Ye  and
A.S. Arrott
H-Y. Guo
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
J.I.L. Chen
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
Z-G. Ye*
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
A.S. Arrott
Affiliation:
Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The ferroelectric and magnetic properties of the perovskite solid solution, (1 − x)LaCrO3–xBiCrO3, have been investigated. While pure LaCrO3 does not show ferroelectric hysteresis even at 77 K, the solid solution of La1−xBixCrO3 with x = 0.1, 0.2, 0.3, and 0.35 displays ferroelectric hysteresis, with the remanent polarization increasing with the increase of the Bi3+ content. Using a superconducting quantum interference device, the magnetization was measured versus temperature under field cooling (FC) and zero field cooling (ZFC) conditions. Magnetic hysteresis has been found in La1−xBixCrO3 (0.1 ⩽ x ⩽ 0.3) below the Néel temperature, TN. With the increase of Bi3+ content, TN decreases, while the magnetization below TN is enhanced. While the ferroelectric and magnetic properties could be due to different origins, the Bi substitution results in both ferroelectric and magnetic enhancements in the (1 − x)LaCrO3–xBiCrO3 solid solutions.

Keywords

OxideFerromagneticFerroelectric
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 8 , August 2007 , pp. 2081 - 2086
Copyright
Copyright © Materials Research Society 2007

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