کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1803862 | 1024634 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Current-induced effect on resistivity and magnetoresistance of La0.67Ba0.33MnO3 manganite
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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: Current-induced effect on resistivity and magnetoresistance of La0.67Ba0.33MnO3 manganite Current-induced effect on resistivity and magnetoresistance of La0.67Ba0.33MnO3 manganite](/preview/png/1803862.png)
چکیده انگلیسی
The influence of dc biasing current on temperature dependence of resistivity and low-field magnetoresistance (MR) of La0.67Ba0.33MnO3 bulk sample is reported. A prominent finding is the change in resistivity around the insulator-to-metal transition temperature (TIM) and the change in MR around the ferromagnetic transition temperature (TC). The decrease in MR around TC at higher biasing current indicates a strong interaction between carrier spin and spin of Mn ions resulting in a higher alignment of Mn ion spins. Change in resistivity around TIM is interpreted in the framework of percolative conduction model based on the mixed phase of itinerant electrons and localized magnetic polarons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 21, November 2008, Pages 2741–2745
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 21, November 2008, Pages 2741–2745
نویسندگان
Rajesh Kumar, Ajai K. Gupta, D.P. Singh, Vijay Kumar, G.L. Bhalla, Neeraj Khare,