کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1624485 | 1516418 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic properties and low-field magnetoresistance of La0.7Sr0.3Mn0.9M0.1O3 compounds (M = Al, Cr, Mn, Fe, Co, Ni, Cu, and Ga)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic properties and low-field magnetoresistance of La0.7Sr0.3Mn0.9M0.1O3 compounds (M = Al, Cr, Mn, Fe, Co, Ni, Cu, and Ga) Magnetic properties and low-field magnetoresistance of La0.7Sr0.3Mn0.9M0.1O3 compounds (M = Al, Cr, Mn, Fe, Co, Ni, Cu, and Ga)](/preview/png/1624485.png)
چکیده انگلیسی
A systematic study of the Mn-site substitution by M = Al, Cr, Fe, Co, Ni, Cu, and Ga in polycrystalline La0.7Sr0.3Mn0.9M0.1O3 compounds has been carried out. It was deduced from the experimental data that the magnetic coupling between the M and Mn ions is antiferromagnetic for Cr3+ and Fe3+, and ferromagnetic for Co2+/3+, Ni2+, and Cu2+. The variation of the Curie temperature versus M was discussed in terms of the double-exchange (DE) interaction of Mn3+OMn4+ as well as the superexchange interactions between the M and Mn ions. It is found that the Mn-site substitution by various M could not enhance the MR response at a low magnetic field of 2 kO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 459, Issues 1–2, 14 July 2008, Pages 29–34
Journal: Journal of Alloys and Compounds - Volume 459, Issues 1–2, 14 July 2008, Pages 29–34
نویسندگان
T.-S. Zhao, W.X. Xianyu, B.H. Li, Z.N. Qian,