کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1483305 | 1510534 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Superparamagnetic behavior of rapidly quenched Ni81P19 alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The magnetic properties of Ni81P19 metallic glass ribbons obtained by melt quenching after different heat treatments of the melt have been investigated. It has been found that all ribbons can be considered to be complex many-structure systems. Thus, an amorphous phase coexists with dispersed Ni-rich particles that in turn contain domains of pure nickel. The particles exhibit a superparamagnetic behavior. The magnetic moment of the nickel particles depends slightly on temperature and magnetic field at temperatures below 400Â K. During heating to higher temperatures the particles lose their magnetic ordering and turn into a paramagnetic Ni-phase before processes involving structural relaxation and crystallization start. The amount of 'primary' Ni-phase increases substantially if the melt is overheated to 1570Â K before the rapid quench.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 32â40, 15 October 2007, Pages 3103-3107
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 32â40, 15 October 2007, Pages 3103-3107
نویسندگان
V.E. Sidorov, A.S. Dovgopol, P.S. Popel, M. Calvo-Dahlborg, U. Dahlborg,