کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5491220 1524797 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic and magnetocaloric properties of DyMn2Si2 compound with multiple magnetic phase transition
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetic and magnetocaloric properties of DyMn2Si2 compound with multiple magnetic phase transition
چکیده انگلیسی
Structural, magnetic and magnetocaloric properties of the ternary intermetallic compound DyMn2Si2 are studied by X-ray diffraction and magnetization measurements. It is found that DyMn2Si2 crystalizes with tetragonal ThCr2S2-type structure and exhibits four successive magnetic transitions at low temperature, around 20 K, 31 K, 38 K and 82 K, named respectively as T1, T2, T3 and T4 transitions. Large values of magnetic field (>35 kOe) favor antiferromagnetic clusters and give rise to exchange bias effect. The different responses of T2 and T3 to field change, induces two non-identical isothermal entropy change (-ΔSM) peaks. The maximum values of -ΔSM occur in temperatures around T3 and reaches 8.2 J/kgK, for a magnetic field change of 50 kOe. Also, the presence of transitions T2 and T3 close to each other induces a table-like magnetocaloric effect (MCE) in a wide temperature range. Thus, the peculiar magnetic properties observed for DyMn2Si2 compound are interesting for low temperature magnetic refrigeration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 424, 15 February 2017, Pages 84-88
نویسندگان
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