C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
31/132
C04B 35/45 (2006.01) C01G 1/00 (2006.01) C01G 3/00 (2006.01) C04B 35/00 (2006.01) H01B 12/00 (2006.01)
Patent
CA 1338851
The disclosed substance has a general chemical formula of Y3-x-Bax-Cuy-Oz, x being 0 to 2, y being 3 to 6, and z being 6 to 12 (but excluding compositions with x=2, y=3 and z=6.75-6.97). At a temperature below 90-95 K, the disclosed substance shows superconductive photoconductivity or even both superconductivity, either real or potential, and photoconductivity in response to incident exciting light in a wavelength range of 420 to 640 nm. The substance is produced by heating a mixture of starting material therefor at 750-1,050°C for 1-10 hours so as to cause solid phase reaction, cooling gradually, shaping under pressure, sintering at 670-1,050°C, and cooling either quickly at a rate of 2,000-900°C/sec or slowly at a rate of 150-200°C/hour.
577463
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
University Of Tokyo (the)
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