کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993094 | 1516150 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relative cooling power enhancement by tuning magneto-structural stability in Ni-Mn-In Heusler alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Off-stoichiometric Ni2MnIn Heusler alloys have drawn recent attention due to their large magnetocaloric entropy change associated with the first-order magneto-structural transition. Here we present crystal structural, calorimetric and magnetic studies of three compositions. Temperature-dependent X-ray diffraction shows clear structural transition from a 6M modulated monoclinic to a L21 cubic. A significant enhancement of relative cooling power (RCP) was achieved by tuning the magnetic and structural stability through minor compositional changes, with the measured results quantitatively close to the prediction as a function of the ratio between the martensitic transition (Tm) temperature and austenite Curie temperature (TC) although the maximal magnetic induced entropy change (ÎSmax) reduction is observed in the same time. The results provided an evaluation guideline of RCPs as well as magnetic-induced entropy change in designing practical active materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 744, 5 May 2018, Pages 785-790
Journal: Journal of Alloys and Compounds - Volume 744, 5 May 2018, Pages 785-790
نویسندگان
Jing-Han Chen, Nickolaus M. Bruno, Zhenhua Ning, William A. Shelton, Ibrahim Karaman, Yujin Huang, Jianguo Li, Joseph H. Jr.,