کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153890 | 1524770 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and electrical transport properties of the pyrochlore iridate Bi2-xCoxIr2O7
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In the present paper, we have studied the magnetic order and electrical transport properties of frustrated magnet Bi2-xCoxIr2O7 (xâ¯â¯=â¯â¯0, 0.2, 0.4, 0.6) polycrystalline. The behavior of the electrical resistivity above 50â¯K in the composites emanate from the electron-electron scattering processes. Grain boundary effects play a dominant role in the conduction process. It is also found from M-T data that the antiferromagnetic interaction and frustration enhances with increasing content of Co. Effective magnetic moments show a possibility of mixed valence state of Co (Co3+ and Co4+). The M-H data of doped samples taken at 2â¯K show hysteresis loops, which suggests the existence of ferromagnetic interaction originated from canted antiferromagnetic state. The magnetic behavior results from the competition between ferromagnetic and antiferromagnetic interaction at each magnetic site.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 451, 1 April 2018, Pages 283-287
Journal: Journal of Magnetism and Magnetic Materials - Volume 451, 1 April 2018, Pages 283-287
نویسندگان
Yuan Feng, Shoujin Zhu, Jian Bian, Feng Chen, Shiyun Chen, Cuiling Ma, Hui Liu, Baolong Fang,