کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1610159 | 1516273 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetocaloric effect of Mn5+xGe3âx alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Magnetic properties and magnetocaloric effect (MCE) of off-stoichiometric Mn5+xGe3âx (x = â0.1 and 0.3) were studied. Depletion of Mn (x = â0.1) decreased the magnetic moment of the compound due to the reduction of the ferromagnetic Mn-Mn interactions. Mn5.1Ge2.9 appeared to be near the optimal composition since Mn5.1Ge2.9 exhibited increase in the magnetic moment compared to the stoichiometric compound and further Mn-enrichment beyond x = 0.1 led to the formation of the weakly magnetic secondary phase. Mn5.1Ge2.9 produced the maximum entropy change of 2.9 J kgâ1 Kâ1 at 296 K and the refrigeration capacity of 44.5 J kgâ1 with an applied field of 10 kOe, making Mn5.1Ge2.9 a possible candidate magnetic refrigerant with reasonably high magnetic entropy change and negligible hysteresis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 620, 25 January 2015, Pages 164-167
Journal: Journal of Alloys and Compounds - Volume 620, 25 January 2015, Pages 164-167
نویسندگان
Yongdeok Kim, Eun Jeong Kim, Kwangseok Choi, Won Bae Han, Hee-Soo Kim, Chong Seung Yoon,