کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8163006 | 1525213 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quenching effects on correlation between electrical and magnetic properties in Pr0.5Sr0.5MnO3 polycrystalline manganites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Quenching effects on correlation between electrical and magnetic properties in Pr0.5Sr0.5MnO3 polycrystalline manganites Quenching effects on correlation between electrical and magnetic properties in Pr0.5Sr0.5MnO3 polycrystalline manganites](/preview/png/8163006.png)
چکیده انگلیسی
In this work, we studied the effect of quenching on the magnetocaloric effect and the correlation between electrical and magnetic properties of two samples polycrystalline manganites Pr0.5Sr0.5MnO3. Sample I (quenched in water) exhibits a negative maximum of magnetic entropy change ÎS around its Curie temperature with ÎS=â4.61 J kgâ1 Kâ1 at a magnetic applied field of 8 T. Sample II (quenched in air) is characterized by the presence of two extrema of magnetic entropy change with a great positive value reaching 5.17 J kgâ1 Kâ1 for only 2 T magnetic field around its Neel temperature. Resistivity and magnetization were found to be related with the different relations Ï=Ï0exp(âM/α) and Ï=Ï0exp(âM2/α) for samples I and II respectively. From these relations associated to Maxwell-Weiss relation, we found the way to evaluate ÎS from resistivity and the obtained results were discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 433, 15 January 2014, Pages 122-126
Journal: Physica B: Condensed Matter - Volume 433, 15 January 2014, Pages 122-126
نویسندگان
A. Krichene, W. Boujelben, A. Cheikhrouhou,