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X-ray magnetic circular dichroism study of Ce$$_{0.5}$$Gd$$_{0.5}$$Ni

Ce$$_{0.5}$$Gd$$_{0.5}$$NiのX線吸収磁気円二色性測定

岡根 哲夫 ; 竹田 幸治  ; 矢野 一雄*; 藤森 淳; 山上 浩志; 西村 克彦*; 石川 義和*; 佐藤 清雄*

Okane, Tetsuo; Takeda, Yukiharu; Yano, Kazuo*; Fujimori, Atsushi; Yamagami, Hiroshi; Nishimura, Katsuhiko*; Ishikawa, Yoshikazu*; Sato, Kiyoo*

(Ce$$_{x}$$Gd$$_{1-x}$$)Ni is an interesting material to study the magnetic properties of Ce 4$$f$$ electrons under the strong influence of other magnetic elements. Previous soft X-ray magnetic circular dichroism (XMCD) study of Ce$$_{0.2}$$Gd$$_{0.8}$$Ni at the Gd $$M_{4,5}$$, Ni $$L_{2,3}$$, and Ce $$M_{4,5}$$ absorption edges has revealed that, while the Gd 4$$f$$ and Ni 3$$d$$ magnetic moments show a saturation at around 2 T, the Ce 4$$f$$ magnetic moment takes a maximum at around 2 T and then shows a linear decrease with magnetic, which can be interpreted as a spin flip behavior. Present study provides the results of similar XMCD study for Ce$$_{0.5}$$Gd$$_{0.5}$$Ni to investigate the stoichiometry dependence of the magnetic properties of Gd 4$$f$$, Ni 3$$d$$, and Ce 4$$f$$ electrons, especially focusing on the spin flip behavior of Ce 4$$f$$ electrons.

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