| Title: | Flux Growth and Superconducting Properties of (Ce,Pr)OBiS2 Single Crystals |
| Authors: | Nagao, Masanori Browse this author |
| Miura, Akira Browse this author →KAKEN DB |
| Urushihara, Daisuke Browse this author |
| Maruyama, Yuki Browse this author |
| Goto, Yosuke Browse this author |
| Mizuguchi, Yoshikazu Browse this author |
| Moriyoshi, Chikako Browse this author |
| Kuroiwa, Yoshihiro Browse this author |
| Wang, Yongming Browse this author |
| Watauchi, Satoshi Browse this author |
| Asaka, Toru Browse this author |
| Takano, Yoshihiko Browse this author |
| Tadanaga, Kiyoharu Browse this author |
| Tanaka, Isao Browse this author |
| Keywords: | BiS2 superconductor |
| flux growth |
| TEM |
| single crystals |
| XAFS |
| Issue Date: | 4-Feb-2020 |
| Publisher: | Frontiers Media |
| Journal Title: | Frontiers in Chemistry |
| Volume: | 8 |
| Start Page: | 44 |
| Publisher DOI: | 10.3389/fchem.2020.00044 |
| Abstract: | 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. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/77497 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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