کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1627692 | 1516459 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetocaloric effect at room temperature in powder of La0.5(CaSr)0.5MnO3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetocaloric effect at room temperature in powder of La0.5(CaSr)0.5MnO3 Magnetocaloric effect at room temperature in powder of La0.5(CaSr)0.5MnO3](/preview/png/1627692.png)
چکیده انگلیسی
The series of strontium-substituted calcium La0.5Ca0.5−xSrxMnO3 has been studied and show the effect of strontium substitution. Magnetic studies on La0.5Ca0.5−xSrxMnO3 compounds are reported. The substitution of a bigger cation, Sr2+ for Ca2+ enhances the Curie temperature (TC) from 228 K (x = 0) to 335 K (x = 0.5) and we have found a value of TC around room temperature (273 K) for x = 0.15. Maximum magnetic-entropy change (ΔSM) and relative cooling power (RCP) are discussed for La0.5Ca0.35Sr0.15MnO3 compound. The magnetic-entropy change is ∼0.615 J/(kg K) at TC (273 K) for a magnetic field of 2 T and the RCP is 36.5 J/kg, which suggests La0.5Ca0.35Sr0.15MnO3 compound a possible candidate for magnetic refrigerants near room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 414, Issues 1–2, 13 April 2006, Pages 31–35
Journal: Journal of Alloys and Compounds - Volume 414, Issues 1–2, 13 April 2006, Pages 31–35
نویسندگان
M. Bejar, R. Dhahri, F. El Halouani, E. Dhahri,