کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1801624 | 1024572 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic ordering in La0.75Sr0.25CrO3: A neutron diffraction study
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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: Magnetic ordering in La0.75Sr0.25CrO3: A neutron diffraction study Magnetic ordering in La0.75Sr0.25CrO3: A neutron diffraction study](/preview/png/1801624.png)
چکیده انگلیسی
Low-temperature neutron diffraction measurements were carried out on a powder sample of the compound La0.75Sr0.25CrO3 in order to elucidate its magnetic structure. Rietveld analysis of the neutron diffraction data, as a function of temperature, showed that it possesses a G-type antiferromagnetic alignment of Cr spins at all temperatures below 300 K. Down to the lowest achievable temperature, viz. 17 K, the Cr site moments were found to be the weighted average of the 75% Cr3+ and 25% Cr4+ spin-only ionic moments. At 17 K, the Cr site moment was 2.71(5) μB/Cr ion. There is no observable change in the Cr-O bond lengths as a function of temperature. The tilt angles of the CrO6 octahedra marginally increase with decreasing temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 6, March 2008, Pages 1163-1166
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 6, March 2008, Pages 1163-1166
نویسندگان
Keka R. Chakraborty, S.M. Yusuf, A.K. Tyagi,