Pramana | |
Magnetic behavior of the oxide spinels: Li0.5Fe2.5-2ð‘¥Alð‘¥Crð‘¥O4 | |
H H Joshi1  K B Modi1  U N Trivedi1  | |
[1] Department of Physics, Saurashtra University, Rajkot 360 005, India$$ | |
关键词: Ferrites; canted spin structure; Mössbauer spectroscopy.; | |
DOI : | |
学科分类:物理(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
In order to study the effect of substitution of Fe3+ by Al3+ and Cr3+ in Li0.5Fe2.5O4 on its structural and magnetic properties, the spinel system Li0.5Alð‘¥Crð‘¥Fe2.5-2ð‘¥O4 (ð‘¥ = 0.0, 0.2, 0.4, 0.5, 0.6 and 0.8) has been characterized by X-ray diffraction, high ï¬eld magnetization, low ï¬eld ac susceptibility and 57Fe Mössbauer spectroscopy. Contrary to the earlier reports, about 50% of Al3+ is found to occupy the tetrahedral sites. The system exhibits canted spin structure and a central paramagnetic doublet was found superimposed on magnetic sextet in the Mössbauer spectra (ð‘¥ > 0.5).
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040496041ZK.pdf | 65KB | download |