کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8156825 1524853 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Birth, growth and death of an antivortex during the propagation of a transverse domain wall in magnetic nanostrips
ترجمه فارسی عنوان
تولد، رشد و مرگ یک انفجار در طول انتشار دیواره حوزه عرضی در نانوساختارهای مغناطیسی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی
Antivortex birth, growth and death accompanying the propagation of a transverse domain wall (DW) in magnetic nanostrips are observed and analyzed. Antivortex formation is an intrinsic process of a strawberry-like transverse DW originated from magnetostatic interaction. Under an external magnetic field, the wider width region of a DW tends to move faster than the narrower one. This speed mismatch tilts and elongates DW center line. As a result, an antivortex with a well-defined polarity is periodically born near the tail of the DW center line. The antivortex either moves along the center line and dies on the other side of the nanostrip, or grows to its maximum size, detaches itself from the DW, and vanishes eventually. The former route reverses the polarity of DW while the later keeps the DW polarity unchanged. The evolution of the DW structures is analyzed using winding numbers assigned to each topological defects. The phase diagram in the field-width plane is obtained and the damping constant׳s influence on the phase diagram is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 368, November 2014, Pages 70-74
نویسندگان
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