کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153547 | 1524767 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, magnetic, and magnetocaloric properties of Ag-doped in the La0.6Ca0.4MnO3 compound
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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
We present a study of the physical properties of the La0.6Ca0.4MnO3 and La0.6Ca0.3 Ag0.1MnO3 powder samples. Our synthesized samples were prepared by sol-gel methods. They crystallize in the orthorhombic perovskite structure with Pnma space group. The substitution of calcium by silver induces an increase in cell volume. The magnetocaloric effect was estimated from the magnetic isotherms. With 10% of Ag doped in the La0.6Ca0.4MnO3, we can observe a significant maximum variation of the magnetic entropy âÎSMax and a relative cooling power RCP near room temperature under an applied magnetic field of 5â¯T. The RCP varied from 221 to 264â¯Jâ¯kgâ1 under an applied magnetic field of 5â¯T for La0.6Ca0.4MnO3 and La0.6Ca0.3Ag0.1MnO3, respectively. The comparison of the values, reported in the reference Gd material, underlines that the proposed oxide material has significant advantages for magnetic refrigeration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 454, 15 May 2018, Pages 190-195
Journal: Journal of Magnetism and Magnetic Materials - Volume 454, 15 May 2018, Pages 190-195
نویسندگان
I. Walha, M. Smari, T. Mnasri, E. Dhahri,