کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1803121 1024609 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-temperature hysteresis and magnetization reversal in nanocomposite FeCo+MnO
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
High-temperature hysteresis and magnetization reversal in nanocomposite FeCo+MnO
چکیده انگلیسی

The hysteretic behavior of mechanically alloyed nanocomposites FeCo+MnO was studied at high temperatures. These composites present an unusual high and thermally stable coercivity, compared to FeCo milled at equal conditions. Coercivity enhancement was observed in hysteresis loops obtained between room temperature and 750 K. It is attributed to the isolation of the FeCo ferromagnetic particles by the paramagnetic MnO (TN=120 K). The Mrev(Mirr)H curves are clearly linear for the composite, indicating that coherent rotation is the reversal mechanism in these materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 14, July 2008, Pages e343–e346
نویسندگان
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