Flux Growth and Superconducting Properties of (Ce,Pr)OBiS2 Single Crystals

Nagao, Masanori; Miura, Akira; Urushihara, Daisuke et al.

Frontiers in Chemistry, 2020, 8, 44

Permalink : https://hdl.handle.net/2115/77497

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アクセス権
open access
URI
https://hdl.handle.net/2115/77497
タイトル
Flux Growth and Superconducting Properties of (Ce,Pr)OBiS2 Single Crystals
著者
Nagao, Masanori ; Miura, Akira ; Urushihara, Daisuke ; Maruyama, Yuki ; Goto, Yosuke ; Mizuguchi, Yoshikazu ; Moriyoshi, Chikako ; Kuroiwa, Yoshihiro ; Wang, Yongming ; Watauchi, Satoshi ; Asaka, Toru ; Takano, Yoshihiko ; Tadanaga, Kiyoharu ; Tanaka, Isao
著者名
Nagao, Masanori
e-Rad_Researcher
10508782
著者名
Miura, Akira
著者名
Urushihara, Daisuke
著者名
Maruyama, Yuki
著者名
Goto, Yosuke
著者名
Mizuguchi, Yoshikazu
著者名
Moriyoshi, Chikako
著者名
Kuroiwa, Yoshihiro
著者名
Wang, Yongming
著者名
Watauchi, Satoshi
著者名
Asaka, Toru
著者名
Takano, Yoshihiko
著者名
Tadanaga, Kiyoharu
著者名
Tanaka, Isao
言語
英語
キーワード
BiS2 superconductor
flux growth
TEM
single crystals
XAFS
発行日
2020-02-04
出版者
Frontiers Media
収録物名
Frontiers in Chemistry
巻(号)
8
ページ
44
抄録
Ce1-xPrxOBiS2 (0. 1 <= x <= 0.9) single crystals were grown using a CsCl flux method. Their structural and physical properties were examined by X-ray diffraction, X-ray absorption, transmission electron microscopy, and electrical resistivity. All of the Ce1-xPrxOBiS2 single crystals with 0.1 <= x <= 0.9 exhibited tetragonal phase. With increasing Pr content, the a-axis and c-axis lattice parameters decreased and increased, respectively. Transmission electron microscope analysis of Ce0.1Pr0.9OBiS2 (x = 0.9) single crystal showed no stacking faults. Atomic-resolution energy dispersive X-ray spectrometry mapping revealed that Bi, Ce/Pr, O, and S occupied different crystallographic sites, while Ce and Pr randomly occupied the same sites. X-ray absorption spectra showed that an increase of the Pr ratio increased the ratio of Ce4+/Ce3+. All of the Ce1-xPrxOBiS2 crystals showed superconducting transition, with a maximum transition temperature of similar to 4 K at x = 0.9.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
Creative Commons Attribution 4.0 International
PISSN
2296-2646
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.3389/fchem.2020.00044