کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9834429 1524910 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic phase transition and magnetic entropy change in (Dy1−xRx)Co2, where R=La and Sm, compounds
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic phase transition and magnetic entropy change in (Dy1−xRx)Co2, where R=La and Sm, compounds
چکیده انگلیسی
Magnetization properties were measured for a series of Dy1−xSmxCo2 and Dy1−xLaxCo2 compounds. It was found that the magnetization lowers when the Dy content decreases in the compounds. In both systems, a metamagnetic transition and first-order magnetic phase transition is observed for certain ranges of the Dy content, and gradually weakens until it disappears as the content of Dy decreases. The magnetic entropy changes |ΔSm|, as a function of the temperature in the magnetic field of 1 T for both series of compounds, have been calculated. Although the |ΔSm| decreases with the decrease of Dy, it does remain fairly large within a certain range of the Dy content. The curie temperature can be adjusted by adjusting x, which indicates that the (Dy1−xRx)Co2 (R=Sm, La) compounds may have potential applications as magnetic refrigerants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 288, March 2005, Pages 22-26
نویسندگان
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