Superior Properties of Energetically Stable La2/3Sr1/3MnO3/Tetragonal BiFeO3 Multiferroic Superlattices | Zendy

Nan Feng | Zendy; Wenbo Mi | Zendy; Xiaocha Wang | Zendy; Yingchun Cheng | Zendy; Udo Schwingenschlögl | Zendy

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Superior Properties of Energetically Stable La_2/3Sr_1/3MnO₃/Tetragonal BiFeO₃ Multiferroic Superlattices

Author(s) -

Nan Feng,

Wenbo Mi,

Xiaocha Wang,

Yingchun Cheng,

Udo Schwingenschlögl

Publication year - 2015

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.5b02436

Subject(s) - superlattice , tetragonal crystal system , materials science , spintronics , condensed matter physics , multiferroics , magnetism , density functional theory , ferroelectricity , ferromagnetism , coupling (piping) , antiferromagnetism , magnetic moment , crystallography , dielectric , crystal structure , optoelectronics , physics , chemistry , quantum mechanics , metallurgy

The superlattice of energetically stable La2/3Sr1/3MnO3 and tetragonal BiFeO3 is investigated by means of density functional theory. The superlattice as a whole exhibits a half-metallic character, as is desired for spintronic devices. The interfacial electronic states and exchange coupling are analyzed in details. We demonstrate that the interfacial O atoms play a key role in controlling the coupling. The higher ferroelectricity of tetragonal BiFeO3 and stronger response to the magnetic moments in the La2/3Sr1/3MnO3/BiFeO3 superlattice show a strongly enhanced electric control of the magnetism as compared to the rhombohedral one. Therefore, it is particularly practical interest in the magnetoelectrically controlled spintronic devices.

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