@article{e806938c92714b1ba0938db8ae4e7ab2,
title = "Hydrostatic pressure effect on Tc of Ba0.9K0.1Pb0.75Bi0.25O3",
abstract = "The superconducting transition temperature of Ba0.9K0.1Pb0.75Bi0.25O3 has been found to be suppressed smoothly by the application of hydrostatic pressure at a rate of -(2.9 ± 0.2) × 10-5 kbar-1 up to 15 kbar. The implications of these results are discussed.",
author = "Chu, {C. W.} and S. Huang and Sleight, {A. W.}",
note = "Funding Information: 1 and BaBiO 2 exhibit perovskite-type BtOruTcHturBeabPubtOw3ith slightly d3ifferent symmetries.3 They were recently found3 to form a solid solution, BaPb 1_~Bi~Ow3,ith Pb-and Bi-atoms occupying the octahedral sites. Wide3rainngtehiosfseolleucttiroicna.lTrheesisstyasntceembies-havior was also found metallic for x \<0.3 while semiconducting otherwise, range of 0.05 ~ x ~ 0.3 with an onset transition tern-perature Tincreasing from 9 K at x = 0.05 to —{\textquoteleft} 13 K at x = 0.3 near the metal—semiconductor phase boundary. Samples with x = 0 and 0.35 are not superconducting down to 4.2 K. A T{\~o} f 13K in BaPb 1_~Bi~Os3ys-tern is the highest yet observed in compounds not con-taming any transition elements. The drastic variation of the s-conduction band, consisting of the Pb-and Bi-6s states, as x increases. The semiconducting nature of the compounds with x \>0.3 was then attributed to the splitting of the 6s-conduction band and consequently the creation of a gap near the critical concentration. The results of the present investigation show that: (1) d-electrons may have participated in the occurance of superconductivity in the BaPb 1_~Bi~Os3ystem, (2) the broad superconducting transition of the system seems likely to be caused by the concentration inhomogeneity near the metal—semiconductor phase boundary, and (3) the superconductivity in the system is a bulk effect.Superconducting BaPbl_XBiXO3 compounds always show a broad transition.3 However it has been * Research supported in part by the National Science Foundation under Grant No. DMR 7302660 and Research Corporation. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",
year = "1976",
doi = "10.1016/0038-1098(76)91220-5",
language = "English",
volume = "18",
pages = "977--979",
journal = "Solid State Communications",
issn = "0038-1098",
publisher = "Elsevier Limited",
number = "8",
}