کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142288 | 1646091 | 2019 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fe2MnGe: A hexagonal Heusler analogue
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
We synthesized bulk polycrystalline samples of Fe2MnGe using arc-melting and vacuum annealing. Our experimental investigations revealed that Fe2MnGe crystallizes in a hexagonal DO19 phase at room temperature, in analogy with its “parent” compound Fe3Ge. We find a large saturation magnetization, even larger than that predicted for the tetragonal phase, of approximately 5μB/f.u. at Tâ¯=â¯5â¯K, with a Curie temperature of Tcâ¼505â¯K. The large moment and magnetocrystalline anisotropy, along with the possibility of half-metallicity presents Fe2MnGe as a strong candidate for spin-transfer-torque RAM and other spintronic applications. We do not find evidence for the cubic or tetragonal phases predicted by first-principles theory during these investigations. However, our neutron diffraction investigations were suggestive of a low temperature structural transformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 793-802
Journal: Journal of Alloys and Compounds - Volume 771, 15 January 2019, Pages 793-802
نویسندگان
S. Keshavarz, N. Naghibolashrafi, M.E. Jamer, K. Vinson, D. Mazumdar, C.L. Dennis, W. II, J.A. Borchers, A. Gupta, P. LeClair,