@inproceedings{80ea98e470e6455d81bda979c1c87dca,
title = "Flux pinning and properties of solid-solution (Y,Nd) 1+xBa 2-xCu 3O 7-δ superconductors processed in air and partial oxygen atmospheres",
abstract = "The effect of chemical composition substitutions on the flux pinning and physical properties of (Y,Nd) 1+xBa 2-xCu 3O 7-δ superconductors was studied in powders processed by solid-state reaction and equilibrated in air at 910°C. The powders were subsequently processed in 1% O 2 atmosphere at < 920°C to increase the superconducting transition temperature (T c) and critical current density (J c). After processing in air, the powders were nearly pure single-phase compositions as determined by X-ray diffraction. Powders were finally annealed in 100% O 2 atmosphere at temperatures < 500°C to maximize T c. The T cs of the powders were measured by ac susceptibility and dc magnetization methods. Annealing powders with a final step in 1% O 2 atmosphere compared to processing in air significantly enhanced T c from 65-90 K to > 92 K for all compositions tested, and also increased J c from about ∼10 3-10 5 A/cm 2 to ∼10 6 A/cm 2. The flux pinning properties varied depending on exact composition, and the intrinsic behaviors changed with the final 1% O 2 annealing treatment.",
author = "Haugan, {T. J.} and Evans, {J. M.} and Tolliver, {J. C.} and I. Maartense and Barnes, {P. N.} and W. Wong-Ng and Cook, {L. P.} and Shull, {R. D.}",
year = "2004",
month = jun,
day = "15",
language = "English (US)",
volume = "149",
series = "Ceramic Transactions",
pages = "151--162",
editor = "R. Meng and A. Goyal and W. Wong-Ng and K. Matsumoto and H.C. Freyhardt",
booktitle = "Fabrication of Long-Length and Bulk High-Temperature Superconductors",
note = "Fabrication of Long-Length and Bulk High-Temperature Superconductors ; Conference date: 27-04-2003 Through 30-04-2003",
}