Current-induced spin-orbit torque magnetization switching in a MnGa/Pt film with a perpendicular magnetic anisotropy

Reza Ranjbar; Kazuya Z. Suzuki; Yuta Sasaki; Lakhan Bainsla; Shigemi Mizukami

doi:10.7567/JJAP.55.120302

Current-induced spin-orbit torque magnetization switching in a MnGa/Pt film with a perpendicular magnetic anisotropy

Reza Ranjbar, Kazuya Z. Suzuki, Yuta Sasaki, Lakhan Bainsla, Shigemi Mizukami

Advanced Institute for Materials Research (AIMR)

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

19 Citations (Scopus)

Abstract

Current-induced magnetization switching is demonstrated in a micron sized Hall bar consisting of Pt-capped ultrathin ferrimagnetic MnGa films. The films showed a low magnetization M_s 150 kA/m and a large perpendicular magnetic anisotropy (PMA) field 0HK_eff 2:5 T, indicating a PMA thickness t product Ku_efft 0:47 mJ/m², which is relatively larger than those reported for other material films with PMA. Magnetization switching induced by an in-plane electrical current was examined with the application of an in-plane magnetic field. The phase diagram of the switching current vs the in-plane magnetic field is qualitatively consistent with that of the torque due to the spin-Hall effect in the Pt layer.

Original language	English
Article number	120302
Journal	Japanese journal of applied physics
Volume	55
Issue number	12
DOIs	https://doi.org/10.7567/JJAP.55.120302
Publication status	Published - 2016 Dec

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Current-induced spin-orbit torque magnetization switching in a MnGa/Pt film with a perpendicular magnetic anisotropy",

abstract = "Current-induced magnetization switching is demonstrated in a micron sized Hall bar consisting of Pt-capped ultrathin ferrimagnetic MnGa films. The films showed a low magnetization Ms 150 kA/m and a large perpendicular magnetic anisotropy (PMA) field 0HKeff 2:5 T, indicating a PMA thickness t product Kuefft 0:47 mJ/m2, which is relatively larger than those reported for other material films with PMA. Magnetization switching induced by an in-plane electrical current was examined with the application of an in-plane magnetic field. The phase diagram of the switching current vs the in-plane magnetic field is qualitatively consistent with that of the torque due to the spin-Hall effect in the Pt layer.",

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AU - Suzuki, Kazuya Z.

AU - Sasaki, Yuta

AU - Bainsla, Lakhan

AU - Mizukami, Shigemi

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AB - Current-induced magnetization switching is demonstrated in a micron sized Hall bar consisting of Pt-capped ultrathin ferrimagnetic MnGa films. The films showed a low magnetization Ms 150 kA/m and a large perpendicular magnetic anisotropy (PMA) field 0HKeff 2:5 T, indicating a PMA thickness t product Kuefft 0:47 mJ/m2, which is relatively larger than those reported for other material films with PMA. Magnetization switching induced by an in-plane electrical current was examined with the application of an in-plane magnetic field. The phase diagram of the switching current vs the in-plane magnetic field is qualitatively consistent with that of the torque due to the spin-Hall effect in the Pt layer.

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