کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9803847 1516474 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic properties of Sm-Fe-B compounds
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Magnetic properties of Sm-Fe-B compounds
چکیده انگلیسی
The magnetic properties of SmFe7 − xBx compounds for 0 ≤ x ≤ 0.5 have been investigated. The main phase has the rhombohedral Th2Zn17 type structure for 0 ≤ x ≤ 0.2 and the tetragonal Nd2Fe14B structure for x = 0.5. X-ray diffraction analyses of aligned powders show that the easy direction of magnetization is perpendicular to the c-axis. The saturation magnetization at 4.2 K increases with increasing B content for 0 ≤ x ≤ 0.1. 57Fe Mössbauer spectra of SmFe7 − xBx for 0 ≤ x ≤ 0.5 have been measured at 77 K and room temperature. The 57Fe hyperfine field increased with increasing B content for 0 ≤ x ≤ 0.1 at room temperature. By B substitution, the Fe moment increases for 0 ≤ x ≤ 0.1. The average Fe moment obtained from the 57Fe hyperfine field increases strongly from 1.59 μB for SmFe6.9B0.1 to 2.01 μB for SmFe6.5B0.5 at room temperature due to increasing B content and change of the crystal structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 393, Issues 1–2, 3 May 2005, Pages 61-65
نویسندگان
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