Published 1990 | Version v1
Book Metadata-only

Ba2YCu3O6.9 powder derived from nitrate-based precursors

Creators

  • 1. Massachusetts Institute of Technology, Cambridge (USA)

Description

Ba2YCu3O6.9 superconductor powder prepared by calcining a nitrate precursor obtained by spray drying an aqueous solution of barium, yttrium, and copper nitrate. Upon calcination to 700 degree C, a nonsuperconducting tetragonal phase (t)' as determined by XRPD was observed. The superconducting phase was not obtained until calcining to >900 degree C. Thermal gravimetric analysis showed that a small weight loss occurred between 700 degree C and 950 degree C. Temperature-programmed desorption (TPD) and TGA-FTIR experiments confirmed that the weight loss was due to the presence of CO2 in the product. This suggests that CO2 acts to stabilize the t' phase in the BYC lattice

Additional details

Publishing Information

Publisher
American Ceramic Society, Inc.
Imprint Place
Westerville, OH (USA)
Imprint Title
The Second International Ceramic Science and Technology Congress and the American Ceramic Society's Electronics Division Meeting
Imprint Pagination
131 p.
Journal Page Range
p. 81.

Conference

Title
2. international ceramic science and technology congress.
Dates
12-15 Nov 1990.
Place
Orlando, FL (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
22075988
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AQUEOUS SOLUTIONS; BARIUM OXIDES; CALCINATION; CHEMICAL PREPARATION; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; INFRARED SPECTRA; MICROSTRUCTURE; TETRAGONAL LATTICES; THERMAL GRAVIMETRIC ANALYSIS; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; COPPER COMPOUNDS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DECOMPOSITION; DISPERSIONS; GRAVIMETRIC ANALYSIS; HOMOGENEOUS MIXTURES; MIXTURES; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS; QUANTITATIVE CHEMICAL ANALYSIS; SOLUTIONS; SPECTRA; SUPERCONDUCTORS; SYNTHESIS; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS

Optional Information

Secondary number(s)
CONF-901125--.