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Effect of strain on voltage-controlled magnetism in BiFeO?-based heterostructures.

ABSTRACT: Voltage-modulated magnetism in magnetic/BiFeO3 heterostructures can be driven by a combination of the intrinsic ferroelectric-antiferromagnetic coupling in BiFeO3 and the antiferromagnetic-ferromagnetic exchange interaction across the heterointerface. However, ferroelectric BiFeO3 film is also ferroelastic, thus it is possible to generate voltage-induced strain in BiFeO3 that could be applied onto the magnetic layer across the heterointerface and modulate magnetism through magnetoelastic coupling. Here, we investigated, using phase-field simulations, the role of strain in voltage-controlled magnetism for these BiFeO3-based heterostructures. It is predicted, under certain condition, coexistence of strain and exchange interaction will result in a pure voltage-driven 180° magnetization reversal in BiFeO3-based heterostructures.

SUBMITTER: Wang JJ

PROVIDER: S-EPMC3971450 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Effect of strain on voltage-controlled magnetism in BiFeO₃-based heterostructures.

Wang J J JJ Hu J M JM Yang T N TN Feng M M Zhang J X JX Chen L Q LQ Nan C W CW

Scientific reports 20140401

Voltage-modulated magnetism in magnetic/BiFeO3 heterostructures can be driven by a combination of the intrinsic ferroelectric-antiferromagnetic coupling in BiFeO3 and the antiferromagnetic-ferromagnetic exchange interaction across the heterointerface. However, ferroelectric BiFeO3 film is also ferroelastic, thus it is possible to generate voltage-induced strain in BiFeO3 that could be applied onto the magnetic layer across the heterointerface and modulate magnetism through magnetoelastic couplin ...[more]

PMID: 24686503

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