کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1635162 | 1007017 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Sn substitution for Co in RCo2 (R = Gd, Tb, Dy) alloys on the structure and magnetocaloric effect
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The phases and the magnetocaloric effect in the alloys R(Co1-xSnx)2 with x = 0, 0.025, 0.050, 0.075, and 0.100 were investigated by X-ray diffraction analysis and magnetization measurement. The substitution of Sn in RCo2 is limite. The cubic MgCu2-type structure for the alloys of RCo3 was confirmed by X-ray powder diffraction and the remaining alloys mainly consisted of the RCo2 phase, along with some RCo3 and R5Sn3 impurity phases. The impurity phases increase with the increase of Sn content. The Tc of the alloys is not very sensitive to the Sn substitution for Dy(Co1-xSnx)2 and Tb(Co1-xSnx)2, whereas in Gd(Co1-xSnx)2, the Curie temperatures significantly increase. The maximum magnetic entropy changes in the alloys Dy(Co1-xSnx)2 (x = 0, 0.025, 0.050, 0.075) are 5.78, 5.43, 3.88, and 2.98 J.kgâ1.Kâ1, respectively, and those in the Tb(Co1-xSnx)2 (x = 0, 0.025) are 3.44, and 2.29 J.kgâ1.Kâ1 respectively in the applied field change of 0-2.0 T.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metals - Volume 26, Issue 2, April 2007, Pages 97-102
Journal: Rare Metals - Volume 26, Issue 2, April 2007, Pages 97-102
نویسندگان
Yinghong ZHUANG, Jianqiu DENG, Junqin LI, Yongzhong ZHAN, Qiming ZHU, Kaiwen ZHOU,