Strain Engineering Magnetic Frustration in Perovskite Oxide Thin Films

被引：35
|
作者：
Escorihuela-Sayalero, Carlos [1 ]
Dieguez, Oswaldo [1 ]
Iniguez, Jorge [1 ]
机构：
[1] Inst Ciencia Mat Barcelona ICMAB CSIC, Bellaterra 08193, Spain
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 24期
关键词：
All Open Access; Green;
D O I：
10.1103/PhysRevLett.109.247202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Our first-principles results show that geometric frustration can be induced in thin films of multiferroic BiFeO3. We find that competing magnetic interactions occur in the so-called supertetragonal phase of this material, which can be grown on strongly compressive substrates. We show that the frustration level can be tuned by appropriately choosing the substrate; in fact, the phase diagram of the films presents a critical line at which the three-dimensional spin order gets annihilated. We argue that these effects are not exclusive to BiFeO3 and predict that they also occur in BiCoO3. DOI: 10.1103/PhysRevLett.109.247202
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页数：5
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