H - Electricity – 01 – B
Patent
H - Electricity
01
B
31/122, 23/228,
H01B 12/00 (2006.01) C01F 17/00 (2006.01) C01G 3/00 (2006.01)
Patent
CA 1341624
Described is a superconducting composition comprising an oxide complex of the formula [L1-x M x]a A b O y wherein L is lanthanum, lutetium, yttrium or scandium; A is copper, bismuth, titanium, tungsten, zirconium, tantalum, niobium, or vanadium; M is barium, strontium, calcium, magnesium or mercury; and "a" is 1 to 2; "b" is 1; "x" is a number in the range of 0.01 to 1.0; and "y" is about 2 to about 4. The oxide complexes of the invention are prepared by a solid-state reaction procedure which produce oxide complexes having enhanced superconducting transition temperatures compared to an oxide complex of like empirical composition prepared by a coprecipitation - high temperature decomposition procedure. With a solid-state reaction prepared oxide complex of the invention a transition temperature as high as 100° K has been observed even under atmospheric pressure.
551406
Kirby Eades Gale Baker
University Of Houston-University Park
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