Tuning coercive force by adjusting electric potential in solution processed Co/Pt(111) and the mechanism involved

Cheng Hsun Tony Chang, Wei Hsu Kuo, Yu Chieh Chang, Jyh Shen Tsay, Shueh Lin Yau

研究成果: 雜誌貢獻文章

4 引文 斯高帕斯(Scopus)

摘要

A combination of a solution process and the control of the electric potential for magnetism represents a new approach to operating spintronic devices with a highly controlled efficiency and lower power consumption with reduced production cost. As a paradigmatic example, we investigated Co/Pt(111) in the Bloch-wall regime. The depression in coercive force was detected by applying a negative electric potential in an electrolytic solution. The reversible control of coercive force by varying the electric potential within few hundred millivolts is demonstrated. By changing the electric potential in ferromagnetic layers with smaller thicknesses, the efficiency for controlling the tunable coercive force becomes higher. Assuming that the pinning domains are independent of the applied electric potential, an electric potential tuning-magnetic anisotropy energy model was derived and provided insights into our knowledge of the relation between the electric potential tuning coercive force and the thickness of the ferromagnetic layer. Based on the fact that the coercive force can be tuned by changing the electric potential using a solution process, we developed a novel concept of electric-potential-tuned magnetic recording, resulting in a stable recording media with a high degree of writing ability.

原文英語
文章編號43700
期刊Scientific Reports
7
DOIs
出版狀態已發佈 - 2017 三月 3

ASJC Scopus subject areas

  • General

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