Magnetic anisotropy modulation in Ta/ CoFeB/ MgO tructure by electric fields

S. Kanai; M. Endo; S. Ikeda; F. Matsukura; H. Ohno

doi:10.1088/1742-6596/266/1/012092

Magnetic anisotropy modulation in Ta/ CoFeB/ MgO tructure by electric fields

S. Kanai, M. Endo, S. Ikeda, F. Matsukura, H. Ohno

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

8 Citations (Scopus)

Abstract

We investigate the magnetic anisotropy in as-deposited and annealed Ta/ CoFeB/ MgO samples prepared by sputtering and its CoFeB thickness dependence. The magnetic easy axis changes from in-plane to perpendicular with decreasing CoFeB thickness. The thickness, at which magnetic easy axis direction changes, is increased by annealing. It is also shown that the magnetic anisotropy can be modulated by electric field and its modulation ratio is larger for the annealed samples.

Original language	English
Article number	012092
Journal	Journal of Physics: Conference Series
Volume	266
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/266/1/012092
Publication status	Published - 2011

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1742-6596/266/1/012092

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AU - Ikeda, S.

AU - Matsukura, F.

AU - Ohno, H.

PY - 2011

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AB - We investigate the magnetic anisotropy in as-deposited and annealed Ta/ CoFeB/ MgO samples prepared by sputtering and its CoFeB thickness dependence. The magnetic easy axis changes from in-plane to perpendicular with decreasing CoFeB thickness. The thickness, at which magnetic easy axis direction changes, is increased by annealing. It is also shown that the magnetic anisotropy can be modulated by electric field and its modulation ratio is larger for the annealed samples.

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Magnetic anisotropy modulation in Ta/ CoFeB/ MgO tructure by electric fields

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