کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10653668 | 1002902 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic exchange interactions induced by Cr-doping in perovskite manganites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of Cr-doping on the structural, magnetic and transport properties of perovskite manganites La0.8Ca0.2Mn1âxCrxO3 (0â¤xâ¤0.7) has been investigated. The Curie temperature (TC) of the Cr-doped samples is almost unchanged up to 30% of Cr-doping. The Cr-doped samples, however, undergo a transition from the parent metallic state to the insulating state below TC. The dc and ac magnetization data suggest that ferromagnetic clusters induced by double exchange interaction between Cr3+ and Mn3+ ions and antiferromagnetic components driven by Cr3+/Mn4+ and Cr3+/Cr3+ interactions are present in the Cr-doped system, which is supported by comparative studies on magnetic and transport properties of LaMnO3+δ and LaMn0.75Cr0.25O3+δ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 133, Issue 8, February 2005, Pages 531-536
Journal: Solid State Communications - Volume 133, Issue 8, February 2005, Pages 531-536
نویسندگان
Chang Seop Hong, Nam Hwi Hur, Yong Nam Choi,