A radical approach to promote multiferroic coupling in double perovskites

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abstract

Double perovskites provide a unique opportunity to induce and control multiferroic behaviours in oxide systems. The appealing possibility to design materials with a strong coupling between the magnetization and the polarization fields may be achieved in this family since these magnetic insulators can present structural self-ordering in the appropriate growth conditions. We have studied the functional properties of La(2)CoMnO(6) and Bi(2)CoMnO(6) epitaxial thin films grown by pulsed laser deposition. Cation-ordered La(2)CoMnO(6) films display a magnetic Curie temperature of 250 K while cation-disordered Bi(2)CoMnO(6) films present ferromagnetism up to similar to 800 K. Such high transition temperature for magnetic ordering can be further tuned by varying the strain in the films indicating an important contribution from the structural characteristics of the materials. Our approach might be generalized for other oxide systems. At this end, our results are compared with other multiferroic systems. The roles of various cations, their arrangements and structural effects are further discussed. (C) 2009 Elsevier B.V. All rights reserved.

keywords

FERROELECTRICITY; LA2NIMNO6

subject category

Materials Science; Physics

authors

Singh, MP; Truong, KD; Fournier, P; Rauwel, P; Rauwel, E; Carignan, LP; Menard, D

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Publication Details

type
Journal Article
year
2009
journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
volume
321
publisher
ELSEVIER SCIENCE BV
issn
0304-8853
issue
11
digital object identifier
10.1016/j.jmmm.2009.02.003
web of science article identifier
WOS:000265238600015

Journal Metrics (JCR 2019)

Journal Impact Factor
2.717
Journal Impact Factor (5 yrs)
2.723
category normalized journal percentile
54.977

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