کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7988326 | 1515815 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distinct spin glass behavior and excellent magnetocaloric effect in Er20Dy20Co20Al20RE20 (RE = Gd, Tb and Tm) high-entropy bulk metallic glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The Er20Dy20Co20Al20RE20 (REâ¯=â¯Gd, Tb and Tm) high-entropy bulk metallic glasses (HE BMGs) with tunable magnetocaloric properties were prepared successfully. As a result, a spin glass behavior was observed below 50â¯K in this HE BMG system. In addition, we found that the Curie temperature (TC) can be easily tuned from 13 to 43â¯K by alloying different rare earth (RE) elements, following a good de Gennes factor dependence. The peak of magnetic entropy change |ÎSMmax| for Gd-, Tb- and Tm-containing glassy alloy under a magnetic field of 5â¯T is 9.1, 8.6 and 11.9â¯Jâ¯kgâ1Kâ1, respectively, which leads to obtain the maximum refrigerant capacity (RC) of 619, 525, and 405â¯Jâ¯kgâ1 for the Er20Dy20Co20Al20RE20 (REâ¯=â¯Gd, Tb and Tm) HE BMGs, respectively. The glass-forming ability (GFA), TC, ÎSM and RC can be widely tuned by alloying different RE elements. These results suggest that these HE BMGs are promising magnetic refrigerants at low temperature in the future.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 96, May 2018, Pages 90-93
Journal: Intermetallics - Volume 96, May 2018, Pages 90-93
نویسندگان
Jun Li, Lin Xue, Weiming Yang, Chenchen Yuan, Juntao Huo, Baolong Shen,