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Superconducting Properties of Aerosol‐Generated YBa 2 Cu 3 O 7 – 8 Powders
Author(s) -
Zhou Derong,
Biswas Pratim,
Oostens Jean,
Boolchand Punit
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03659.x
Subject(s) - aerosol , superconductivity , coherence length , penetration depth , log normal distribution , magnetization , materials science , particle size , penetration (warfare) , condensed matter physics , particle size distribution , mineralogy , analytical chemistry (journal) , chemistry , magnetic field , physics , optics , chromatography , statistics , mathematics , organic chemistry , engineering , quantum mechanics , operations research
YBa 2 Cu 3 O 7–8 superconducting powders are generated by an aerosol route and classified into different size intervals in a cascade impactor. Two length scales (penetration depth, λ, and coherence length, ζ) characterizing superconductivity in aerosol‐produced superconducting grains are established for the first time from magnetization measurements. Representing the aerosol size distribution by a lognormal function, the susceptibility (χ) versus particle diameter ( d p ) relation is analyzed to obtain the penetration depth (λ). The lower and upper critical field strengths, H c1 and c2 , are established for the samples. Intraparticle critical current densities are computed from the magnetization results for these aerosol‐processed powders.