Superconductivity in New Pb-Based 1222 Layered Cuprates of (Pb0.75W0.25)Sr2(Eu2.0−x Ce x )Cu2O z

New Pb-based 1212 cuprates of (Pb0.8W0.2)Sr2(Nd1ax Ca x )Cu2O7aI' were synthesized. The sample with x=0.6 was reported to show superconductivity with an onset temperature up to 82 K. Interestingly, in order to obtain superconductivity of the sample, synthesis in N2 was necessary, then synthesis...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2014-01, Vol.27 (1), p.5-8
Main Authors: Sasakura, Hiroyuki, Akagi, Yoshiya, Tanaka, Masashi, Tsukui, Shigeki, Adachi, Motoaki
Format: Article
Language:English
Subjects:
COPPER ALLOYS (10 TO 40 CU)
COPPER OXIDE
Cuprates
CUPROUS OXIDE
ELECTRICAL CONDUCTIVITY
FABRICATION
Lead (metal)
Magnetism
SUPERCONDUCTIVITY
Synthesis
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Summary:New Pb-based 1212 cuprates of (Pb0.8W0.2)Sr2(Nd1ax Ca x )Cu2O7aI' were synthesized. The sample with x=0.6 was reported to show superconductivity with an onset temperature up to 82 K. Interestingly, in order to obtain superconductivity of the sample, synthesis in N2 was necessary, then synthesis in air or post-treatment in O2 led to the disappearance of superconductivity.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-013-2442-7