Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-03-12
1992-01-07
Kunemund, Robert
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
156603, 156DIG73, 505729, 505742, 505727, H01B 1200
Patent
active
050792253
ABSTRACT:
The present invention discloses a process and apparatus for forming textures in materials. The process comprises heating a material having an anisotropy in the paramagnetic or diamagnetic susceptibility within a magnetic field. The material is heated to a temperature approaching its melting point while a magnetic field of at least 10.sup.4 Oe is simultaneously applied. The process and apparatus produce highly textured bulk and elongated materials with high current densities below critical superconducting temperatures.
REFERENCES:
patent: 4939121 (1990-07-01), Rybka
patent: 4939308 (1990-07-01), Maxfield et al.
patent: 4942151 (1990-07-01), Capone et al.
Noel et al., "Anisotropy of the Superconducting Magnetic Field H.sub.2 of a Single Crystal of TmBaCuO", Solid State Communications, vol. 63, No. 10, pp. 915-917, 1987.
Arendt et al., "Aligned Sintered Compacts of RBaCuO.sub.7 (R=Dy,Er,Eu,Gd,Ho,Y)", Material Res. Soc. Symp. Proc., vol. 99, 1988, pp. 203-208.
Ekin, "Transport Critical Current in Bulk Sintered YBaCuO and Possibilities for Its Enhancement", Adv. Cer. Mat., vol. 1, No. 3B, 1987, pp. 586-592.
Krusin Elbaum et al., "Field Dependence of Meissner Effect in a Single Crystal of YBa,CuO . . . ", Mat. Res. Soc. Symp. Proc., vol. 99, 1988, pp. 221-226.
Lasnikov et al., "Mechanical and High Temperature (920.degree. C.) Magnetic Field Grain Alignment of Polycrystalline (Hc,Y)Ba.sub.2 Ca.sub.3 O.sub.7-8 ", J. Appl. Phys. 65(8), 15 Apr. 1989, pp. 3136-3141.
Kunemund Robert
Suiter Sean Patrick
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