Investigation of Superconductivity in Ce-Doped (La,Pr)OBiS(2) Single Crystals

Single crystals of Ce-doped (La,Pr)OBiS(2) superconductors, the multinary rare-earth elements substituted ROBiS(2), were successfully grown. The grown crystals typically had a size of 1–2 mm and a plate-like shape with a well-developed c-plane. The c-axis lattice constants of the obtained (La,Ce,Pr)...

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Detalles Bibliográficos
Autores principales: Nagao, Masanori, Hanada, Yuji, Miura, Akira, Maruyama, Yuki, Watauchi, Satoshi, Takano, Yoshihiko, Tanaka, Isao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9102861/
https://www.ncbi.nlm.nih.gov/pubmed/35591312
http://dx.doi.org/10.3390/ma15092977
Descripción
Sumario:Single crystals of Ce-doped (La,Pr)OBiS(2) superconductors, the multinary rare-earth elements substituted ROBiS(2), were successfully grown. The grown crystals typically had a size of 1–2 mm and a plate-like shape with a well-developed c-plane. The c-axis lattice constants of the obtained (La,Ce,Pr)OBiS(2) single crystals were approximately 13.6–13.7 Å, and the superconducting transition temperature was 1.23–2.18 K. Valence fluctuations of Ce and Pr were detected through X-ray absorption spectroscopy analysis. In contrast to (Ce,Pr)OBiS(2) and (La,Ce)OBiS(2), the superconducting transition temperature of (La,Ce,Pr)OBiS(2) increased with the increasing concentrations of the tetravalent state at the R-site.

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