[22a-B201-1~11] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

[22a-B201-3] Modulation of AHE hysteresis derived from ferromagnetism of Pt/CFO by field effect

〇Reon Sakakibara¹, Yumiko Katayama¹, Tomohiro Koyama^2,3, Daichi Chiba^2,3, Kazunori Ueno¹ (1.GSAS, UTokyo, 2.ISIR, Osaka Univ., 3.CSRN, Osaka Univ.)

Keywords:magnetic proximity effect, anomalous hall effect

Pt has been suggested to be a near ferromagnetic material in terms of Stoner theory. In fact, the saturation value of the anomalous Hall effect (AHE) induced by the magnetic proximity effect in a Pt thin film (2.5 nm) on a CoFe₂O₄ (CFO) film was reported to be controlled by the electric field effect. However, in this report, the coercive force remains unchanged and control of long-range order has not been achieved. In this study, we report on the hysteresis control of Pt thin film (5.9 nm) on CFO by applying a voltage.