Perpendicular magnetic anisotropy in as-dposited La/CoFeB/MgO layered structures.

Yuki Iida; Jun Okabayashi; Peng Sheng; Masamitsu Hayashi; Seiji Mitani

Presentation information

Oral presentation

10 Spintronics and Magnetics » 10.1 Emerging materials in spintronics and magnetics (including fabrication and charactrization methodologies)

[19p-D104-7~21] 10.1 Emerging materials in spintronics and magnetics (including fabrication and charactrization methodologies)

10.1と10.2と10.3のコードシェアセッションあり

Mon. Mar 19, 2018 2:45 PM - 7:00 PM D104 (56-104)

Jun Okabayashi(The Univ. of Tokyo), Takeshi Kato(Nagoya Univ.), Yota Takamura(TITECH)

4:15 PM - 4:30 PM

▲ [19p-D104-12] Perpendicular magnetic anisotropy in as-dposited La/CoFeB/MgO layered structures.

〇(M2)Yuki Iida^1,2, Jun Okabayashi³, Peng Sheng², Masamitsu Hayashi^2,3, Seiji Mitani^1,2 (1.Univ. of Tsukuba, 2.NIMS, 3.The Univ. of Tokyo)

Keywords:Perpendicular magnetic anisotropy, Orbital magnetic moment, Electronegativity

It is well known that perpendicular magnetic anisotropy (PMA) is increased by post-annealing at the CoFeB/MgO interface. On the other hand, interface PMA can also be observed even for the as-deposited CoFeB/MgO layered structures, depending on the underlayer materials. In this study, we investigated PMA in as-deposited La/CoFeB/MgO, La/CoFeB/La, MgO/CoFeB/MgO layered structures by a vibrating sample magnetometer. To further investigate the correlation between PMA and orbital magnetic moments, x-ray magnetic circular dichroism was measured for Fe-L_2,3 and La-M_4,5 edges.