Ultrathin films of polycrystalline MnGa alloy with perpendicular magnetic anisotropy

Room temperature growth of textured polycrystalline films of MnGa alloys using a CoGa buffer layer on a thermally oxidized Si substrate is demonstrated. MnGa thin films with a thickness of 2 nm exhibit out-of-plane rectangular hysteresis loops. A small saturation magnetization of about 200 emu/cm3 a...

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Published inApplied physics express Vol. 10; no. 2; pp. 23005 - 23008
Main Authors Ono, Atsuo, Suzuki, Kazuya Z., Ranjbar, Reza, Sugihara, Atsushi, Mizukami, Shigemi
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.02.2017
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Summary:Room temperature growth of textured polycrystalline films of MnGa alloys using a CoGa buffer layer on a thermally oxidized Si substrate is demonstrated. MnGa thin films with a thickness of 2 nm exhibit out-of-plane rectangular hysteresis loops. A small saturation magnetization of about 200 emu/cm3 and a large perpendicular magnetic anisotropy of up to 3-5 Merg/cm3 were achieved for 2- and 3-nm-thick MnGa ultrathin films; such values have never been reported before, and they provide a pathway for integration with conventional Si technology.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.10.023005