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Structural analysis and superconductivity of CeFeAsO$$_{1-x}$$H$$_{x}$$

CeFeAsO$$_{1-x}$$H$$_{x}$$の構造解析と超伝導性

松石 聡*; 半那 拓*; 村場 善行*; Kim, S. W.*; Kim, J. E.*; 高田 昌樹*; 社本 真一; Smith, R. I.*; 細野 秀雄*

Matsuishi, Satoru*; Hanna, Taku*; Muraba, Yoshinori*; Kim, S. W.*; Kim, J. E.*; Takata, Masaki*; Shamoto, Shinichi; Smith, R. I.*; Hosono, Hideo*

LnFeAsO$$_{1-x}$$H$$_{x}$$($$Ln$$=lanthanoid)の1111型鉄系超伝導体を代表して、CeFeAsO$$_{1-x}$$(D,H)$$_{x}$$ ($$x$$=0.0-0.48)で粉末中性子回折と放射光X線回折測定を行った。これらの結果は、出発物質の水素の種類に関係なく両方の試料でH$$^{-}$$イオンが酸素サイトを占めていることを強く示唆している。

We performed the neutron powder diffraction and synchrotron X-ray diffraction measurements on CeFeAsO$$_{1-x}$$(D,H)$$_{x}$$ ($$x$$ = 0.0-0.48) as a representative of 1111-type family of iron-based superconductors LnFeAsO$$_{1-x}$$H$$_{x}$$ ($$Ln$$ = lanthanoid). These results strongly suggest that H$$^{-}$$ ions exclusively occupy the oxygen sites in both samples, regardless of the hydrogen species in the starting material.

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パーセンタイル:13.13

分野:Materials Science, Multidisciplinary

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