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Superconductivity of La-doped BaPb/sub 1-//sub x/ Bi/sub x/O/sub 3/ with x = 0. 4

Journal Article · · Chin. Phys.; (United States)
OSTI ID:6359338
The semiconductor BaPb/sub 0.6/Bi/sub 0.4/O/sub 3/ can exhibit superconductivity when doped with La. The T/sub c/ versus y (the concentration of La) curve shows features very similar to those of T/sub c/ versus x of BaPb/sub 1-//sub x/Bi/sub x/O/sub 3/ with y = 0--0.5. However, the material has at least a two-phase structure, and lanthanum has a very limited solubility in BaPb/sub 0.6/Bi/sub 0.4/O/sub 3/. Measurements of the variation of lattice constants of the BPB phase in La-doped BPB (x = 0.4) prove that the Bi/Pb ratio is changed, and we may consider that the occurrence of superconductivity in La-doped BPB (x = 0.4) is due to the change of Bi content in BaPb/sub 0.6/Bi/sub 0.4/O/sub 3/ caused by the addition of lanthanum.
Research Organization:
Institute of Physics, Academia Sinica, Beijing
OSTI ID:
6359338
Journal Information:
Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 9:1; ISSN CHPHD
Country of Publication:
United States
Language:
English