کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1799059 1524837 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design and magnetic properties of L10–FePt/Fe and L10–FePt exchange coupled graded nanodots
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Design and magnetic properties of L10–FePt/Fe and L10–FePt exchange coupled graded nanodots
چکیده انگلیسی


• The magnetic properties and reversal process of L10–FePt/Fe and L10–FePt exchange coupled graded nanodots were investigated using the object-oriented micromagnetic framework.
• The increase in anisotropy gradient span of L10–FePt section is favorable for the reduction in coercivity for L10–FePt/Fe graded nanodots.
• The low coercivity and high squareness ratio can be achieved simultaneously for L10–FePt graded nanodots with an appropriate gradient design.

The magnetic properties and reversal process of L10–FePt/Fe and L10–FePt exchange coupled graded nanodots were investigated using the object-oriented micromagnetic framework (OOMMF). It is indicated that the increase in anisotropy gradient span of L10–FePt section is favorable for the reduction in coercivity for L10–FePt/Fe graded nanodots. However, the low remanence magnetization and squareness ratio caused by the large gradient span is not popular for recording media. If the Fe soft section is removed, the low coercivity and high squareness ratio can be achieved simultaneously for L10–FePt graded nanodots with an appropriate gradient design. Therefore, the combination of exchange coupled graded structure and bit patterned media is an effective approach to balance the trilemma issues of current perpendicular magnetic recording media.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 384, 15 June 2015, Pages 40–44
نویسندگان
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