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

▼ [22a-W241-11] Mechanical modulation of magnetic anisotropy in Pt/Co films
deposited on a flexible substrate

〇Shinya Ota¹, Ryo Asai¹, Takahiro Kozeki², Hirokazu Akamine², Tatsuya Fujii², Takahiro Namazu², Taishi Takenobu³, Tomohiro Koyama¹, Daichi Chiba¹ (1.Univ. of Tokyo, 2.Univ. of Hyogo, 3.Waseda Univ.)

Keywords:magnetostriction,perpendicular magnetic anisotropy,flexible substrate

Pt/Co structures were deposited on a flexible substrate, varying the thickness of Co. From the thickness dependence, it was confirmed that perpendicular magnetic anisotropy in the films arose from the interface magnetic anisotropy. The perpendicular magnetic anisotropy changed with a uniaxial strain, while the interface magnetic anisotropy remained unchanged. The sign of the change did not match with that expected in bulk Co, but with that of PtCo. But the interfacial PtCo alloying should yeild interface magnetic anisotropy which didn't change with the strain. More researches are needed for a consistent explanation.