NDLI: Stabilization of high t(sub c) phase in bismuth cuprate superconductor by lead doping

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Stabilization of high t(sub c) 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	1990
Description	It has widely been 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 investigation is undertaken to determine optimum lead content and processing conditions to achieve these. 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 (XRD) to determine the zero resistance temperature, T(sub c)(0) and to identify presence of phases, respectively. The annealing temperature was varied between 790 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	51198
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900018516
Archival Resource Key	ark:/13960/t2g78931p
Language	English
Publisher Date	1990-04-01
Access Restriction	Open
Subject Keyword	Solid-state Physics Additives Phase Transformations Stabilization Superconductivity High Temperature Superconductors X Ray Diffraction Solid State Electrical Resistivity Magnetic Permeability Bismuth Compounds Chemical Composition 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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