Synthesis, structure, and superconductivity of La 7+2 x Sr 1-4 x K x Na x Cu 4 O 16- δ

Sodium and potassium have been doped into La SrCu O to form La Sr K Na Cu O solid solutions by a solid-state reaction, which crystallizes in the 4/ space group when 0 ≤ < 0.16 and when 0.16 < ≤ 0.25. With the equivalent replacement of four Sr by one Na , one K and two La , it is very interesti...

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Bibliographic Details
Published in:RSC advances 2024-11, Vol.14 (48), p.35391-35399
Main Authors: Xu, Deyang, Cai, Guohong, Huang, Peiliang, Wu, Xi, Wang, Yan, Geng, Jinling, Ju, Jing, Wang, Xiaoge, Yin, Congling, Li, Guobao
Format: Article
Language:English
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Summary:Sodium and potassium have been doped into La SrCu O to form La Sr K Na Cu O solid solutions by a solid-state reaction, which crystallizes in the 4/ space group when 0 ≤ < 0.16 and when 0.16 < ≤ 0.25. With the equivalent replacement of four Sr by one Na , one K and two La , it is very interesting to find that (the definition is presented in the introduction part) of La Sr K Na Cu O does not remain constant with an increase in but first increases from 14.8 K for = 0.00 to 33.9 K for = 0.10 and then decreases to 18.5 K for = 0.175.
ISSN:2046-2069
2046-2069
DOI:10.1039/D4RA06045H