کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458251 | 1516165 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of the crystal electric field on magnetocaloric properties of CsGd(MoO4)2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Magnetocaloric effect (MCE) was investigated in the single crystal of CsGd(MoO4)2 in the temperature range from 2 to 30 K and fields up to 5 T applied along the easy and hard magnetic axis. The analysis of specific heat and magnetization provided the refinement of crystal electric field (CEF) parameters supporting the dominance of uniaxial symmetry. The knowledge of CEF energy levels enabled the extrapolation of MCE parameters outside the experimental region. Consequently, maximum values of the isothermal entropy change, âÎSM, in magnetic fields up to 5 T are expected to occur at temperatures between 1 and 2 K. While âÎSM achieves 19.2 J/kgK already for the field 1 T, for the field change 7 T, maximal âÎSMâ 26.8 J/kgK with a refrigerant capacity of 215 J/kg is expected. The absence of thermal hysteresis and the losses due to eddy currents as well as good chemical stability makes the compound CsGd(MoO4)2 attractive for magnetic refrigeration at low temperatures. The possibilities of further enhancement of MCE parameters are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 729, 30 December 2017, Pages 323-330
Journal: Journal of Alloys and Compounds - Volume 729, 30 December 2017, Pages 323-330
نویسندگان
V. TkáÄ, A. OrendáÄová, R. Tarasenko, M. OrendáÄ, A. Feher,