Journal
SOLID STATE COMMUNICATIONS
Volume 208, Issue -, Pages 34-40Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2015.02.013
Keywords
Rare-earth manganites; Magnetically induced ferroelectricity; Magnetoelectric coupling
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Funding
- Fundacao para a Ciencia e Tecnologia [PTDC/FIS-NAN/0533/2012]
- QREN [Norte-070124-FEDER-000070]
- Fundação para a Ciência e a Tecnologia [PTDC/FIS-NAN/0533/2012] Funding Source: FCT
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The phase diagram of Gd1-xYxMnO3, 0 <= x <= 0.4, is presented and the role of the driving mechanisms in stabilizing both magnetic and ferroelectric orderings is discussed in the framework of the Dzyaloshinskii-Moriya model. The (x, T) phase diagram reflects the effect of lattice distortions induced by the substitution of Gd3+ ion by smaller Y3+ ions, which gradually unbalances the antiferromagnetic against the ferromagnetic exchange interactions, enabling the emergence of ferroelectricity for higher concentrations of yttrium. (C) 2015 Elsevier Ltd. All rights reserved.
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