کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8002431 1516316 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic, transport and electronic properties of SmNi4Si compound
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Magnetic, transport and electronic properties of SmNi4Si compound
چکیده انگلیسی
The polycrystalline sample of SmNi4Si was investigated by means of powder X-ray diffraction, magnetic susceptibility, magnetization, electrical resistivity and specific heat measurements. This compound crystallizes in the hexagonal CaCu5-type structure (space group P6/mmm) and orders magnetically at TC = 14.9 K. The magnetization, electrical resistivity and specific heat data indicate that the electronic ground state of the SmNi4Si has a ferromagnetic-like character. The magnitude of energy gap in the magnon spectrum calculated from electrical resistivity data revealed the presence of high influence of magnetocrystalline anisotropy effect. Our experimental studies were supported by first-principles calculations employing DFT method together with LSDA + U approach. We explore implication of U parameter for magnetization of SmNi4Si. Obtained theoretical result shows that the electronic structure and magnetic properties of SmNi4Si for U = 6 eV is closer to our experimental results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 577, 15 November 2013, Pages 19-24
نویسندگان
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