کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8158357 | 1524879 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetization evolution in a Permalloy dot driven by spin-polarized currents in multi-nanocontact geometry
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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: Magnetization evolution in a Permalloy dot driven by spin-polarized currents in multi-nanocontact geometry Magnetization evolution in a Permalloy dot driven by spin-polarized currents in multi-nanocontact geometry](/preview/png/8158357.png)
چکیده انگلیسی
Magnetization evolution in a Permalloy dot with radius R=200Â nm and thickness L=10Â nm driven by spin polarized currents was studied by micromagnetic simulations with three point contacts on a diameter. We obtained rich phase diagrams through changing the directions, magnitudes and the inter-distances of the spin-polarized currents. The current must exceed a minimum value before changes in the magnetic state occurred. As the current density was increased, the ground state changed from a single vortex state to complex magnetic states via nucleation and annihilation of vortex-antivortex pairs. However, these rich magnetization phases finally recovered into two different stable vortex states after the current was powered off.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 341, September 2013, Pages 45-48
Journal: Journal of Magnetism and Magnetic Materials - Volume 341, September 2013, Pages 45-48
نویسندگان
Huanan Li, Yan Liu, An Du,