کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834705 | 1524913 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ TEM study of Nd-rich phase in NdFeB magnet
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: In situ TEM study of Nd-rich phase in NdFeB magnet In situ TEM study of Nd-rich phase in NdFeB magnet](/preview/png/9834705.png)
چکیده انگلیسی
Hot stage in transmission electron microscope has been used to study the structure and stability of Nd-rich phase in NdFeB magnet. The present observation shows that the so-called complex cubic phase is in fact the prototype of Mn2O3 (space group Ia3¯) with lattice parameter of a=1.08nm. The Nd-rich phase with P3¯m1 structure (h-Nd2O3) was first observed to be transformed from the BCC phase after in situ heating over 400 °C. The orientation relationship between these two structures satisfies as follows: (0 0 0 1)HCP//(2 0 0)BCC, (101¯0)HCP//(020)BCC, [1¯21¯0]HCP//[001]BCC. It is argued that the h-Nd2O3 was arising from the oxidation of the BCC Nd-rich phase rather than from Nd2Fel4B matrix phase as suggested in the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 285, Issues 1â2, January 2005, Pages 177-182
Journal: Journal of Magnetism and Magnetic Materials - Volume 285, Issues 1â2, January 2005, Pages 177-182
نویسندگان
S.C. Wang, Y. Li,