کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8000800 | 1516277 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetocaloric effect (MCE) in melt-extracted Ni-Mn-Ga-Fe Heusler microwires
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We reported the magnetocaloric properties of Heusler-type Ni48Mn26Ga19.5Fe6.5 microwires with diameter of â¼50 μm which were fabricated by a precise melt-extraction method. The Fe-doped Ni-Mn-Ga microwires after chemical ordering heat-treatment exhibit negligible thermal and magnetic hysteresis along the axial direction due to their small magnetocrystalline anisotropy and display excellent magnetocaloric effect (MCE) for both magnetic (paramagnetic-ferromagnetic) phase transition and structural (austenite-martensite) phase transition. The maximum entropy change (âÎSm), â¼4.7 J kgâ1 Kâ1, is obtained during the structural transition induced by an external magnetic field of 50 kOe at a temperature of â¼361 K. Moreover, tiny positive magnetic entropy also appears when the applied field is lower than 5 kOe.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 616, 15 December 2014, Pages 184-188
Journal: Journal of Alloys and Compounds - Volume 616, 15 December 2014, Pages 184-188
نویسندگان
Yanfen Liu, Xuexi Zhang, Dawei Xing, Hongxian Shen, Dongming Chen, Jingshun Liu, Jianfei Sun,