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
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
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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 20Â K, 31Â K, 38Â K and 82Â K, named respectively as T1, T2, T3 and T4 transitions. Large values of magnetic field (>35Â 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 (-ÎSM) peaks. The maximum values of -ÎSM occur in temperatures around T3 and reaches 8.2Â J/kgK, for a magnetic field change of 50Â 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
Journal: Journal of Magnetism and Magnetic Materials - Volume 424, 15 February 2017, Pages 84-88
نویسندگان
D.C. dos Reis, E.L.T. França, V.G. de Paula, A.O. dos Santos, A.A. Coelho, L.P. Cardoso, L.M. da Silva,