Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Valance Fluctuation of Ce in α-Ce3Al
Kiichi Okuda, Satoru Noguchi, Yasuo Takigawa, Yoshio Murashita, Junji Sakurai, Hironobu Fujii
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Keywords: valence fluctuation, α-Ce3Al, XPS
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1989 Volume 58 Issue 8 Pages 2630-2633

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Abstract

The valence of Ce in α-Ce3Al was investigated by means of XPS measurements in a temperature range from 300 K to 3.7 K. Below 120 K, the presence of Ce4+ was detected, and its relative intensity I(Ce4+⁄Ce3+) increased with decreasing temperature. An anomaly of the magnetic susceptibility near 100 K was successfully explained by taking account of the valence change.

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