Control of magnetic anisotropy in Pt/Co system using ionic liquid gating

Takamasa Hirai; Tomohiro Koyama; Aya Obinata; Yuki Hibino; Kazumoto Miwa; Shimpei Ono; Makoto Kohda; Daichi Chiba

doi:10.7567/APEX.9.063007

Control of magnetic anisotropy in Pt/Co system using ionic liquid gating

Takamasa Hirai, Tomohiro Koyama, Aya Obinata, Yuki Hibino, Kazumoto Miwa, Shimpei Ono, Makoto Kohda, Daichi Chiba

ENG - Materials Science

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

27 Citations (Scopus)

Abstract

The magnetic anisotropy of the Pt/Co system under ionic liquid gating was studied. A comparison of results obtained using samples under the gating and those subjected to mild oxidization by oxygen plasma ashing suggested that the anodic oxidization of the Co layer could be one of the causes of the large modulation observed in the magnetic anisotropy. However, the charge accumulation effect was probably dominant when the Co layer was on the cathode side. The experiments presented here are expected to aid in elucidating the mechanism by which electric fields affect magnetism.

Original language	English
Article number	063007
Journal	Applied Physics Express
Volume	9
Issue number	6
DOIs	https://doi.org/10.7567/APEX.9.063007
Publication status	Published - 2016 Jun

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "The magnetic anisotropy of the Pt/Co system under ionic liquid gating was studied. A comparison of results obtained using samples under the gating and those subjected to mild oxidization by oxygen plasma ashing suggested that the anodic oxidization of the Co layer could be one of the causes of the large modulation observed in the magnetic anisotropy. However, the charge accumulation effect was probably dominant when the Co layer was on the cathode side. The experiments presented here are expected to aid in elucidating the mechanism by which electric fields affect magnetism.",

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AU - Hirai, Takamasa

AU - Koyama, Tomohiro

AU - Obinata, Aya

AU - Hibino, Yuki

AU - Miwa, Kazumoto

AU - Ono, Shimpei

AU - Kohda, Makoto

AU - Chiba, Daichi

PY - 2016/6

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AB - The magnetic anisotropy of the Pt/Co system under ionic liquid gating was studied. A comparison of results obtained using samples under the gating and those subjected to mild oxidization by oxygen plasma ashing suggested that the anodic oxidization of the Co layer could be one of the causes of the large modulation observed in the magnetic anisotropy. However, the charge accumulation effect was probably dominant when the Co layer was on the cathode side. The experiments presented here are expected to aid in elucidating the mechanism by which electric fields affect magnetism.

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Control of magnetic anisotropy in Pt/Co system using ionic liquid gating

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