Synthesis, Structure and Superconducting Properties of Ba1-xLax/4K3x/4(Bi0.25Pb0.75)O3-δ Perovskites

• Published in: Physica. C, Superconductivity Vol. 598; p. 1
• Main Authors: Farid, Muhammad Asim, Chen, Yuxuan, Cai, Guohong, Xin, Junjie, Li, Guobao, Sun, Junliang, Liao, Fuhui, Lin, Jianhua
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.07.2022; Elsevier BV
• Subjects: Ba1-xLax/4K3x/4(Pb0.75Bi0.25)O3-δ; Chemical synthesis; Crystal structure; Diffraction; Electric resistance; Electrical resistivity; Lanthanum; Perovskite oxide; Perovskites; Solid state physics; Solid state reaction; Structural properties; Superconductivity; Temperature; Ba1-xLax/4K3x/4(Pb0.75Bi0.25)O3-δ; Perovskite oxide; Solid state reaction; Structural properties; Superconductivity
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2022.1354075

•Ba1-xLax/4K3x/4(Bi0.25Pb0.75)O3-δ superconductors are presented here.•Direct solid state method is used to synthesize.•Structural properties are investigated.•The electrical resistivity studies are carried out.•Tczero (the highest temperature at which the electrical resistivity becomes zero) ranges from 10.7 to 11.2 K. The potassium and lanthanum co-doped superconducting series with composition Ba1-xLax/4K3x/4(Bi0.25Pb0.75)O3-δ where (0.00 ≤ x ≤ 0.40) has been synthesized by solid state reaction. Their crystal structure and superconducting properties has been investigated in detail. All the synthesized samples crystallize in P1 space group as confirmed by the X-ray diffraction analysis. All the samples show sharp superconductivity transitions as confirmed from electrical resistivity measurements. Significantly the Tconset (the highest temperature at which the electrical resistivity decreases abruptly) ranges from 11.4 to 11.8 K and Tczero (the highest temperature at which the electrical resistivity becomes zero) ranges from 10.7 to 11.2 K.