کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1801970 | 1024586 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Heat capacity and magnetocaloric effect in manganites (La1âyEuy)0.7Pb0.3MnO3 (y:0.2; 0.6)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Heat capacity and intensive magnetocaloric effect (MCE) in manganites (La1âyEuy)0.7Pb0.3MnO3 [y=0.2; 0.6] (LEPM) were investigated by means of adiabatic calorimeter. The heat capacity anomaly as well as the values of both the intensive (ÎTAD) and the extensive (ÎSMCE) MCE were found to decrease upon increased replacement of La with nonmagnetic Eu. However, because of widening of the MCE peaks, the LEPM compounds show the relative cooling power, RCP/ÎH, comparable to other solid solutions of manganites. Owing to strong effect of EuâLa substitution on the Curie temperature, LEPM might have potential as the solid state refrigerants in multi-element cooling apparatus operating in a wide temperature range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 322, Issue 6, March 2010, Pages 622-627
Journal: Journal of Magnetism and Magnetic Materials - Volume 322, Issue 6, March 2010, Pages 622-627
نویسندگان
A.V. Kartashev, I.N. Flerov, N.V. Volkov, K.A. Sablina,