Compositions: ceramic – Ceramic compositions – Refractory
Patent
1989-04-07
1991-07-23
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501152, 501126, C04B 3550
Patent
active
050343599
ABSTRACT:
An insulating composition consisting of Bi, Sr, RE, Cu, O or of Tl, Ba, RE, Cu, O (wherein; RE is an element selected from a group consisting of Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y) aligns properly with a crystal face of an oxide superconductor because its crystal structure is the same as or similar to that of the oxide superconductor. An insulating composition in which a part of Bi is replaced by Pb is further near the oxide superconductor its construction, and the modulation structure in this insulating composition is mitigated or disappears.
REFERENCES:
Subramanian et al., "Superconducting and nonsuperconducting analogs of bismuth strontium calcium copper oxide," J. Solid State Chem., 80(1), 156-160, early 1989.
Subramanian et al., "Superconductor-to insulator transition in the bismuth strontium yttrium copper oxide," J. Solid State Chem., 77(1), 196-199, early 1988.
Tamagai et al., "Characterization of a Non-Superconducting Cuprate, Bi2Sr2YCu2O8.5," Japanese Journal of Applied Physics, vol. 27, No. 6, pp. L1074-L1076, Jun. 1988.
Fukushima et al., "Transition to an Insulator from a Superconductor due to Substitution of Ca by Rare-earth Elements in Bi4Sr4RE2CUY4016+0 (RE=Nd, Eu, Y)," Japanese Journal of Applied Physics, vol. 27, No. 5, pp. L790-L791, May 1988.
Fukushima et al., "Electrical and Magnetic Properties in Bi2Sr2Cal-x YxCU2O8+0," Japanese Journal of Applied Physics, vol. 27, No. 8, pp. L1432-L1434, Aug. 1988.
Ando Ken
Fukushima Noburu
Niu Hiromi
Nomura Shunji
Yamashita Tomohisa
Bonner C. Melissa
Dixon Jr. William R.
Kabushiki Kaisha Toshiba
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