کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10156012 | 1666369 | 2019 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Coexistence of magnetization reversal and exchange bias in Mn-substituted CuCrO2
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
We systematically studied the magnetization reversal (MR) and exchange bias (EB) properties of Mn-doped CuCrO2 compounds. Single-phase ceramic samples of CuCr1âxMnxO2 (xâ¯=â¯0-0.2) were synthesized with the sol-gel method. Synchrotron radiation X-ray absorption spectroscopy of the Mn 2p, Cr 2p core levels showed that the Cr ion is trivalent and the Mn ion is in a mixed valence state of Mn3+/4+. All the Mn-doped samples, due to the double-exchange interaction between Cr3+-O-Mn3+ and Mn3+-O-Mn4+, showed a ferromagnetic transition in field-cooling magnetization. Interestingly, zero-field-cooling magnetization reversed from positive to negative as temperature decreased below the compensation temperature. The xâ¯=â¯0.05 sample also showed exchange bias. The coexistence of MR and EB in the system can be explained by the competition between ferromagnetic and antiferromagnetic order.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 772, 25 January 2019, Pages 703-709
Journal: Journal of Alloys and Compounds - Volume 772, 25 January 2019, Pages 703-709
نویسندگان
L. Xie, H.G. Zhang, H.L. Huang, Y.L. Lu, J.Q. Yu, M.H. Li, X.Q. Tang, C. Wang,