کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9834660 1524912 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Remarkable strain-induced magnetic anisotropy in epitaxial Co2MnGa (0 0 1) films
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Remarkable strain-induced magnetic anisotropy in epitaxial Co2MnGa (0 0 1) films
چکیده انگلیسی
Remarkably large, strain-induced anisotropy is observed in the thin-film Heusler alloy Co2MnGa. 30 nm Co2MnGa (0 0 1) films have been epitaxially grown on different interlayers/substrates with varied strain, and investigated with ferromagnetic resonance. The film grown on ErAs/InGaAs/InP experiences tension strain, resulting in an out-of-plane strain-induced anisotropy (∼1.1×106 erg/cm3) adding to the effects of shape anisotropy. In contrast, the film grown on ScErAs/GaAs, experiences a compression strain, resulting in an out-of-plane strain-induced anisotropy (∼3.3×106 erg/cm3) which almost totally cancels the effects of shape anisotropy, thus rendering the film virtually isotropic. This results in the formation of stripe domains in remanence. In addition, small, but well-defined 2-fold and 4-fold in-plane anisotropy coexist in each sample with weak, but interesting strain dependence. Transport measurement shows small (<1%) magnetoresistance effects in the compression film, but negligible magnetoresistance in the relaxed and tension strained samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 286, February 2005, Pages 340-345
نویسندگان
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