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X-ray studies of helium-quenched Ba sub 2 YCu sub 3 O sub 7-x

Conference · · Advanced Ceramic Materials; (USA)
OSTI ID:5123956
;  [1]
  1. National Bureau of Standards, Gaithersburg, MD (USA)
A series of 11 samples of Ba{sub 2}YCu{sub 3}O{sub 7-x} (x {approx} 0 to 1) was prepared from single phase orthorhombic material by annealing at temperatures from 400 to 1000{degree}C, followed by rapid quenching. All quenchings were performed using a liquid nitrogen-cooled copper cold well through which helium gas was passed. Lattice parameters were obtained for these materials by x-ray powder diffraction methods to obtain dependence of cell volumes and crystal symmetry on annealing temperature.
OSTI ID:
5123956
Report Number(s):
CONF-8704372--
Conference Information:
Journal Name: Advanced Ceramic Materials; (USA) Journal Volume: 2:3B
Country of Publication:
United States
Language:
English