Article (Scientific journals)
Strain-induced ferroelectricity in simple rocksalt binary oxides
Bousquet, Eric; Spaldin, N.; Ghosez, Philippe
2010In Physical Review Letters, 104, p. 037601
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Abstract :
[en] Using first-principles density functional calculations, we show that ferroelectricity can be induced in simple alkaline-earth-metal binary oxides such as barium oxide (BaO) using appropriate epitaxial strains. Going beyond the fundamental discovery, we highlight that the functional properties (polarization, dielectric constant, and piezoelectric response) of such strained binary oxides are comparable in magnitude to those of typical ferroelectric perovskite oxides, making them of direct interest for applications. Finally, we show that magnetic binary oxides such as EuO, with the same rocksalt structure, behave similarly to the alkaline-earth-metal oxides, suggesting a route to new multiferroics combining ferroelectric and magnetic properties.
Disciplines :
Physics
Author, co-author :
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Spaldin, N.
Ghosez, Philippe  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Language :
English
Title :
Strain-induced ferroelectricity in simple rocksalt binary oxides
Publication date :
2010
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Society, Ridge, United States - New York
Volume :
104
Pages :
037601
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 January 2010

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