کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1802897 | 1024606 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal reversal of magnetic nanoparticles with the quartic anisotropy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of the quartic anisotropy on energy barriers and thermal reversal modes is studied in a system of two interacting single-domain particles. It is assumed that the two particles possess identical volumes and uniaxial anisotropies. The lowest energy barriers to be overcome for magnetization reversal are determined by saddle points of the energy surface. The presence of the quartic anisotropy results in a change in the locations of the saddle points, and then the reversal modes under thermal excitation, which is illustrated by the energy surface and corresponding contour plots of the two single-domain particles. In the presence of the quartic anisotropy, the energy barriers are calculated analytically for the coherent rotation and the symmetric fanning rotation modes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 303, Issue 1, August 2006, Pages 243-248
Journal: Journal of Magnetism and Magnetic Materials - Volume 303, Issue 1, August 2006, Pages 243-248
نویسندگان
Ying Li,