Electric field effect on magnetization at the Fe/MgO(001) interface

Manish K. Niranjan; Chun Gang Duan; Sitaram S. Jaswal; Evgeny Y. Tsymbal

doi:10.1063/1.3443658

Electric field effect on magnetization at the Fe/MgO(001) interface

Manish K. Niranjan, Chun Gang Duan, Sitaram S. Jaswal, Evgeny Y. Tsymbal

School of Physics and Electronic Science

University of Nebraska-Lincoln

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

283 Scopus citations

Abstract

Density-functional calculations are performed to explore magnetoelectric effects originating from the influence of an external electric field on magnetic properties of the Fe/MgO(001) interface. It is shown that the effect on the interface magnetization and magnetocrystalline anisotropy can be substantially enhanced if the electric field is applied across a dielectric material with a large dielectric constant. In particular, we predict an enhancement of the interface magnetoelectric susceptibility by a factor of the dielectric constant of MgO over that of the free standing Fe (001) surface. We also predict a significant effect of electric field on the interface magnetocrystalline anisotropy due to the change in the relative occupancy of the 3d -orbitals of Fe atoms at the Fe/MgO interface. These results may be interesting for technological applications such as electrically controlled magnetic data storage.

Original language	English
Article number	222504
Journal	Applied Physics Letters
Volume	96
Issue number	22
DOIs	https://doi.org/10.1063/1.3443658
State	Published - 31 May 2010

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title = "Electric field effect on magnetization at the Fe/MgO(001) interface",

abstract = "Density-functional calculations are performed to explore magnetoelectric effects originating from the influence of an external electric field on magnetic properties of the Fe/MgO(001) interface. It is shown that the effect on the interface magnetization and magnetocrystalline anisotropy can be substantially enhanced if the electric field is applied across a dielectric material with a large dielectric constant. In particular, we predict an enhancement of the interface magnetoelectric susceptibility by a factor of the dielectric constant of MgO over that of the free standing Fe (001) surface. We also predict a significant effect of electric field on the interface magnetocrystalline anisotropy due to the change in the relative occupancy of the 3d -orbitals of Fe atoms at the Fe/MgO interface. These results may be interesting for technological applications such as electrically controlled magnetic data storage.",

author = "Niranjan, \{Manish K.\} and Duan, \{Chun Gang\} and Jaswal, \{Sitaram S.\} and Tsymbal, \{Evgeny Y.\}",

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AU - Niranjan, Manish K.

AU - Duan, Chun Gang

AU - Jaswal, Sitaram S.

AU - Tsymbal, Evgeny Y.

PY - 2010/5/31

Y1 - 2010/5/31

N2 - Density-functional calculations are performed to explore magnetoelectric effects originating from the influence of an external electric field on magnetic properties of the Fe/MgO(001) interface. It is shown that the effect on the interface magnetization and magnetocrystalline anisotropy can be substantially enhanced if the electric field is applied across a dielectric material with a large dielectric constant. In particular, we predict an enhancement of the interface magnetoelectric susceptibility by a factor of the dielectric constant of MgO over that of the free standing Fe (001) surface. We also predict a significant effect of electric field on the interface magnetocrystalline anisotropy due to the change in the relative occupancy of the 3d -orbitals of Fe atoms at the Fe/MgO interface. These results may be interesting for technological applications such as electrically controlled magnetic data storage.

AB - Density-functional calculations are performed to explore magnetoelectric effects originating from the influence of an external electric field on magnetic properties of the Fe/MgO(001) interface. It is shown that the effect on the interface magnetization and magnetocrystalline anisotropy can be substantially enhanced if the electric field is applied across a dielectric material with a large dielectric constant. In particular, we predict an enhancement of the interface magnetoelectric susceptibility by a factor of the dielectric constant of MgO over that of the free standing Fe (001) surface. We also predict a significant effect of electric field on the interface magnetocrystalline anisotropy due to the change in the relative occupancy of the 3d -orbitals of Fe atoms at the Fe/MgO interface. These results may be interesting for technological applications such as electrically controlled magnetic data storage.

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DO - 10.1063/1.3443658

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Electric field effect on magnetization at the Fe/MgO(001) interface

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