Composition dependence of the second-order interfacial magnetic anisotropy for MgO/CoFeB/Ta films

The CoFeB thickness, t dependence of the effective first- and second-order magnetic anisotropy, K1eff and K2, for MgO/(Co1-xFex)80B20/Ta films (x=0.3-1.0) is investigated. As Co40Fe40B20 thickness decreases, K1eff increases and shows a perpendicular magnetic anisotropy for t=1.2 nm. On the other han...

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Bibliographic Details
Main Authors: Takahiro Ogasawara, Mikihiko Oogane, Muftah Al-Mahdawi, Masakiyo Tsunoda, Yasuo Ando
Format: Article
Language:English
Published: AIP Publishing LLC 2019-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5129988