期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 115, 期 -, 页码 92-96出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2017.12.017
关键词
intermetallic compounds; X-ray diffraction; Crystal structure; Magnetic properties; Thermal expansion
资金
- UGC, India [43-519/2014(SR)]
- UGC, India [43-519/2014(SR)]
We report the thermal expansion behavior of Ho2Fe16.5Cr0.5 compound in the range of temperature 13-483 K, using structural parameters obtained by analyzing temperature dependent x-ray diffraction (XRD) patterns. From 13 K to 300 K, the compound shows negligible thermal expansion having the coefficient of volume expansion (alpha(v)) similar to 10(-6) K-1. The thermal expansion behavior of the studied compound can be explained by the role of magnetovolume effect (MVE) below ferrimagnetic ordering temperature (394 K), in addition to normal phononic contribution. Fe sublattice contribute to MVE, whereas both the rare earth and Fe sublattice determine the value of saturation magnetization.
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