کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1611546 | 1516297 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tunable magnetic transition and reversible magnetocaloric effects at room temperature in transition-metal-oxyfluorides CrO2âxFx
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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 report the tuning of magnetic transition and associated reversible magnetocaloric effect in CrO2âxFx by manipulating the doping levels. At x = 0.12, the magnetic transition occurs at room temperature, with magnetic-entropy changes of around 4 J kgâ1 Kâ1 and relative cooling power of 388 J kgâ1 at magnetic-field changes from 0 to 50 kOe. The reversibility is verified by negligible thermal and magnetic hysteresis, as well as the positive slope at Arrott plots. The complete phase diagram for electronic and magnetic states is drawn for CrO2âxFx. This work indicates CrO1.88F0.12 is a promising candidate for room temperature magnetic refrigeration because of the nature of second-order transition and abundance of elements involved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 596, 25 May 2014, Pages 69-72
Journal: Journal of Alloys and Compounds - Volume 596, 25 May 2014, Pages 69-72
نویسندگان
Weijun Ren, Bing Li, Wen Liang, Changqing Jin, Zhidong Zhang,