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Dzyaloshinskii-Moriya nature of ferroelectric ordering in magnetoelectric Gd1-xYxMnO3 system

Title
Dzyaloshinskii-Moriya nature of ferroelectric ordering in magnetoelectric Gd1-xYxMnO3 system
Type
Article in International Scientific Journal
Year
2015
Authors
Vilarinho, R
(Author)
Other
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Almeida, A
(Author)
FCUP
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Machado da Silva, JMM
(Author)
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Oliveira, JB
(Author)
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Sa, MA
(Author)
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Tavares, PB
(Author)
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Agostinho Moreira, JA
(Author)
FCUP
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Journal
Vol. 208
Pages: 34-40
ISSN: 0038-1098
Publisher: Elsevier
Scientific classification
FOS: Natural sciences > Physical sciences
Other information
Authenticus ID: P-00A-9WD
Abstract (EN): 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.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 7
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