[18a-WL1_201-1~8] 6.4 Thin films and New materials

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[18a-WL1_201-4] Hydrogen gas exposure on CoPt perpendicular magnetic stacked films

〇Haruki Yamane¹, Hisato Shibata^1,2, Jiaxiang Liu³, Takashi Hasegawa³ (1.AITC, 2.Tohoku Univ., 3.Akita Univ.)

Keywords:

magnetic material,hydrogen

We have been developing the magneto-optical hydrogen sensors utilising optical interferences or surface plasmon resonances. In this study, the influences of hydrogen exposure on the perpendicular magnetic properties in magneto-optical interference (cavity) elements composed of [Pt/CoPt/AZO/Ag] multilayers were investigated. As a result, the magnetic properties were depended on the hydrogen concentration. This is presumed to result from changes in the electronic state at the CoPt/AZO interface due to hydrogen permeation into the multilayers.