[18p-PB1-1~84] 10 スピントロニクス・マグネティクス（ポスター）

▲ [18p-PB1-35] Electric Field Effect on Exchange Bias in Perpendicularly-Magnetized Co/CoO_x System

〇Takamasa Hirai^1,2、Tomohiro Koyama^2,3、Daichi Chiba^2,3 (1.The Univ. of Tokyo、2.ISIR, Osaka Univ.、3.CSRN, Osaka Univ.)

キーワード：electric field effect, exchange bias

Electric field (EF) control of exchange bias (EB) has been proposed for a fast and ultralow magnetization manipulation method in spin-valve type of spintronic devices. Previous reports show the modulation of EB by EF application using ferromagnet (FM)/multiferroic antiferromagnet (AFM) heterostructure. In this multiferroic system, AFM spin is directly manipulated by EF due to magnetoelectric (ME) coupling between ferroelectricity and antiferromagnetism, resulting in the modulation EB. In this work, we investigate the EF effect on EB in solid state capacitor structure with Co/CoO_x structure, where the CoO_x is insulator and non-multiferroic AFM below its Néel temperature.