[22a-W241-1~11] CS.6 10.1/10.2/10.3 Code sharing session "Emerging control-methods of magnetization and related phenomena"

▼ [22a-W241-10] Electrical control of magnetism in electric double layer capacitors with a Co electrode

〇Takamasa Hirai¹, Aya Obinata¹, Yuki Hibino¹, Tomohiro Koyama¹, Kazumoto Miwa², Shimpei Ono², Makoto Kohda³, Daichi Chiba¹ (1.The Univ. of Tokyo, 2.CRIEPI, 3.Tohoku Univ.)

Keywords:Electric field effect,Electric double layer

Recently, electric field effect on magnetism has been intensively studied. We have reported the change in Curie temperature by applying gate voltage V_G in solid state or electric double layer (EDL) capacitors with a Co electrode. One of main factors for this effect has been considered to be a modification of electron density by an electric field application. Other mechanisms (e.g. redox) have been recently suggested and become controversial. In this presentation, the electric field effects on magnetism in EDL capacitors with a Co electrode will be discussed and the results will be compared with intentionally oxidized Co films by an oxygen plasma ashing.