Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Spontaneous Volume Magnetostriction of RCo2 Compounds
Ryoji MinakataMasayuki ShigaYoji Nakamura
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1976 Volume 41 Issue 4 Pages 1435-1436

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Abstract
The thermal expansion of RCo2 compounds (R=Gd, Tb, Dy, Ho and Er) has been measured from 4.2 K up to 700 K. All the RCo2 compounds show an Invar-like thermal expansion anomaly below their Curie temperatures: a large positive spontaneous volume magnetostriction was found. The large magneto-volume coupling is presumably of help towards a first order phase transition observed in DyCo2, HoCo2 and ErCo2.
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