NDLI: Stabilization of high tc phase in bismuth cuprate superconductor by lead doping

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Stabilization of high tc phase in bismuth cuprate superconductor by lead doping

Content Provider	NASA Technical Reports Server (NTRS)
Author	Pachauri, J. P. Khokle, W. S. Date, S. K. Nagpal, K. C. Gupta, Ram P.
Copyright Year	1991
Description	It has been widely ascertained that doping of lead in Bi-Sr-Ca-Cu-O systems promotes the growth of high T sub c (110 K) phase, improves critical current density, and lowers processing temperature. A systematic study was undertaken to determine optimum lead content and processing conditions to achieve these properties. A large number of samples with cationic compositions of Bi(2-x)Pb(x)Sr2Ca2Cu3 (x = 0.2 to 2.0) were prepared by conventional solid state reaction technique. Samples of all compositions were annealed together at a temperature and characterized through resistance temperature (R-T) measurements and x ray diffraction to determine the zero resistance temperature, T sub c(0) and to identify presence of phases, respectively. The annealing temperature was varied between 790 and 880 C to optimize processing parameters. Results are given. In brief, an optimum process is reported along with composition of leaded bismuth cuprate superconductor which yields nearly a high T sub c single phase with highly stable superconducting properties.
File Size	52416
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19920012376
Archival Resource Key	ark:/13960/t0fv3gh3j
Language	English
Publisher Date	1991-01-01
Access Restriction	Open
Subject Keyword	Solid-state Physics Annealing Additives Stabilization Superconductivity Bismuth Oxides High Temperature Superconductors X Ray Diffraction Temperature Measurement Solid State Calcium Oxides Electrical Resistivity Magnetic Permeability Strontium Compounds Lead Metal Current Density Copper Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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