کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438578 | 1398185 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Large magnetocaloric and magnetoresistance effects in metamagnetic Sm0.55(Sr0.5Ca0.5)0.45MnO3 manganite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Large magnetocaloric and magnetoresistance effects in metamagnetic Sm0.55(Sr0.5Ca0.5)0.45MnO3 manganite Large magnetocaloric and magnetoresistance effects in metamagnetic Sm0.55(Sr0.5Ca0.5)0.45MnO3 manganite](/preview/png/5438578.png)
چکیده انگلیسی
The metamagnetic transition, magnetocaloric and magnetoresistance effects are investigated in polycrystalline Sm0.55(Sr0.5Ca0.5)0.45MnO3 (SSCMO) manganite. A sharp magnetization jump at Curie temperature (TC) 73.5 K with large thermal hysteresis is observed. Magnetic measurements and Arrott plots analysis indicate that the transition is first order in nature. Under a low magnetic field change of 1 T, the magnetic entropy change exhibits a peak value of âÎSMmax(T)=4.01 J/kg K with relative cooling power (RCP) value of 44.1 J/kg in the vicinity of TC. The mechanism of charge conduction in insulator phase is polaron transport. Large negative magnetoresistance ratio with value of ~99% is obtained within a broad temperature range below metal insulator transition temperature under 1 T magnetic field. These results indicate the potential applications of SSCMO in magnetic refrigeration and spintronics devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 10, July 2017, Pages 7870-7874
Journal: Ceramics International - Volume 43, Issue 10, July 2017, Pages 7870-7874
نویسندگان
Weiping Zhou, Chunlin Ma, Mengxiong Cao, Zhixing Gan, Xingyu Wang, Yaru Ma, Xiaoxiong Wang, Weishi Tan, Dunhui Wang, Youwei Du,