Perpendicular magnetic anisotropy of Pt/Co 2 FeAl 0.5 Si 0.5 /MgAl 2 O 4  trilayers | Zendy

Wu Yong | Zendy; Xu Xiaoguang | Zendy; Li Lu | Zendy; Wang Zhicheng | Zendy; Miao Jun | Zendy; Jiang Yong | Zendy

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Perpendicular magnetic anisotropy of Pt/Co 2 FeAl 0.5 Si 0.5 /MgAl 2 O 4 trilayers

Author(s) -

Wu Yong,

Xu Xiaoguang,

Li Lu,

Wang Zhicheng,

Miao Jun,

Jiang Yong

Publication year - 2016

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.201600160

Subject(s) - feal , annealing (glass) , materials science , perpendicular , anisotropy , oxide , atmospheric temperature range , aluminium oxide , condensed matter physics , crystallography , metallurgy , intermetallic , chemistry , physics , optics , geometry , mathematics , alloy , meteorology

Perpendicular magnetic anisotropy (PMA) has been achieved in Co 2 FeAl 0.5 Si 0.5 (CFAS) based trilayers with MgAl 2 O 4 (MAO) as oxide layer. It was found that the PMA is sensitive to the annealing conditions, the thicknesses of MAO ( t MAO ) and CFAS ( t CFAS ) layers. A strong PMA can be observed in the Pt/CFAS/MAO structure after 340 °C annealing and maintained as high as 400 °C. For a fixed CFAS thickness ( t CFAS = 1.5 nm), there is a narrow range of t MAO to keep the PMA in this structure. Oxidation at the CFAS/MAO interface plays a very significant role to the PMA, which can be controlled by tuning t MAO for fixed annealing temperature and t CFAS .

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