Mixed valence state (SmxLa1-x)Tr2Al20
Mixed valence state (SmxLa1-x)Tr2Al20
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混合价态 (SmxLa1-x)Tr2Al20
DOI：
10.1088/1742-6596/683/1/012020
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Tomoya Uruga and Yuji Aoki
中科院分区：
文献类型：
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作者：
Akira Yamada;Ryuji Higashinaka;Kengo Fushiya;Takuya Asano;Tatsuma D. Matsuda;Masaichiro Mizumaki;Satoshi Tsutsui;Kiyofumi Nitta;Toshiaki Ina;Tomoya Uruga and Yuji Aoki
(Sm x La 1-x) Tr 2 Al 20 (Tr= Ti 和 Ta) 的 X 射线吸收光谱表现出不寻常的磁场不敏感物理性质，在 2.5 至 300 K 之间的选定温度下在 Sm L 3 边缘处进行了测量。光谱表明 Sm 离子处于混合价态，其平均价态约为+ 2.85，几乎没有明显的温度和 x 依赖性。对于 SmTi 2 Al 20，Sm 离子的平均价态在 6.5 K 以下没有显示出与磁序相关的任何变化。
X-ray absorption spectra of (Sm x La 1-x) Tr 2 Al 20 (Tr= Ti and Ta), which exhibit unusual magnetic-field-insensitive physical properties, have been measured at the Sm L 3-edge at selected temperatures between 2.5 and 300 K. The spectra show that the Sm ions are in a mixed valence state and that their average valence is approximately+ 2.85, with almost no significant temperature and x dependences. For SmTi 2 Al 20, the average valence of the Sm ions does not display any change associated with the magnetic ordering below 6.5 K.