Chakraborty, Keka R. ; Yusuf, S. M. ; Tyagi, A. K. (2008) Magnetic ordering in La0.75Sr0.25CrO3: a neutron diffraction study Journal of Magnetism and Magnetic Materials, 320 (6). pp. 1163-1166. ISSN 0304-8853
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jmmm.2007.11.003
Abstract
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Antiferromagnetic Ordering; Neutron Diffraction |
| ID Code: | 112344 |
| Deposited On: | 01 Dec 2017 12:00 |
| Last Modified: | 01 Dec 2017 12:00 |
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