Magnetic-field-induced switchable exchange bias in NiFe film on (110) Fe3O4 with a strong uniaxial magnetic anisotropy

Joonghoe Dho

doi:10.1063/1.4921487

Magnetic-field-induced switchable exchange bias in NiFe film on (110) Fe₃O₄ with a strong uniaxial magnetic anisotropy

Joonghoe Dho

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The exchange bias in a soft ferromagnetic NiFe layer coupled with a hard ferrimagnetic Fe₃O₄ film grown on a (110) SrTiO₃ single-crystal substrate was investigated as a function of the switching magnetic field (H_S) as a means to control the magnetization direction of the Fe₃O₄. The sign of the exchange bias was consistent with the sign of H_S, indicating that the exchange coupling constant between the NiFe and (110) Fe₃O₄ layers was positive. Below |H_S| = 1 kOe, the hysteresis behavior of the exchange bias of the soft ferromagnetic NiFe resembled the magnetic hysteresis behavior of the hard ferrimagnetic Fe₃O₄.

Original language	English
Article number	202405
Journal	Applied Physics Letters
Volume	106
Issue number	20
DOIs	https://doi.org/10.1063/1.4921487
State	Published - 18 May 2015

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title = "Magnetic-field-induced switchable exchange bias in NiFe film on (110) Fe3O4 with a strong uniaxial magnetic anisotropy",

abstract = "The exchange bias in a soft ferromagnetic NiFe layer coupled with a hard ferrimagnetic Fe3O4 film grown on a (110) SrTiO3 single-crystal substrate was investigated as a function of the switching magnetic field (HS) as a means to control the magnetization direction of the Fe3O4. The sign of the exchange bias was consistent with the sign of HS, indicating that the exchange coupling constant between the NiFe and (110) Fe3O4 layers was positive. Below |HS| = 1 kOe, the hysteresis behavior of the exchange bias of the soft ferromagnetic NiFe resembled the magnetic hysteresis behavior of the hard ferrimagnetic Fe3O4.",

author = "Joonghoe Dho",

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N2 - The exchange bias in a soft ferromagnetic NiFe layer coupled with a hard ferrimagnetic Fe3O4 film grown on a (110) SrTiO3 single-crystal substrate was investigated as a function of the switching magnetic field (HS) as a means to control the magnetization direction of the Fe3O4. The sign of the exchange bias was consistent with the sign of HS, indicating that the exchange coupling constant between the NiFe and (110) Fe3O4 layers was positive. Below |HS| = 1 kOe, the hysteresis behavior of the exchange bias of the soft ferromagnetic NiFe resembled the magnetic hysteresis behavior of the hard ferrimagnetic Fe3O4.

AB - The exchange bias in a soft ferromagnetic NiFe layer coupled with a hard ferrimagnetic Fe3O4 film grown on a (110) SrTiO3 single-crystal substrate was investigated as a function of the switching magnetic field (HS) as a means to control the magnetization direction of the Fe3O4. The sign of the exchange bias was consistent with the sign of HS, indicating that the exchange coupling constant between the NiFe and (110) Fe3O4 layers was positive. Below |HS| = 1 kOe, the hysteresis behavior of the exchange bias of the soft ferromagnetic NiFe resembled the magnetic hysteresis behavior of the hard ferrimagnetic Fe3O4.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Magnetic-field-induced switchable exchange bias in NiFe film on (110) Fe₃O₄ with a strong uniaxial magnetic anisotropy

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