Superconductor jointed structure

Details Superconductor jointed structure Superconductor jointed structure

1990-03-28

1992-01-07

Hille, Rolf

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

357 5, 427 62, 427 63, 505733, 505822, H01L 3922, B05D 512, H01B 1200, B22C 0000

Patent

active

050792261

ABSTRACT:
A jointed structure comprising at least two kinds of oxide superconductor having different melting points, higher melting point superconductor and one lower melting point oxide superconductor being alternately jointed. In this jointed structure, the lower melting oxide superconductor is used as a joint layer for the higher melting oxide superconductors. The jointed structure can be obtained by combining an Y--Ba--Cu--O oxide superconducting material and a Bi--Sr--Ca--Cu--O oxide superconducting material, or by combining two Bi--Sr--Ca--Cu--O oxide superconducting materials of different compositions and accordingly of different melting points. Large cylindrical structures used as, for example, a container for apparatus for biomagnetism measurement can be produced by jointing two or more divided cylindrical parts. In this case, the techique of the jointed structure of the present invention can be applied for jointing of the divided cylindrical parts. The cylindrical structure produced by jointing divided cylindrical parts according to the present invention can prevent the incoming of geomagnetism, thereby enabling reliable measurement of biomagnetism.

REFERENCES:
patent: 4336958 (1982-06-01), Goetzinger
patent: 4861751 (1989-08-01), Tenhover
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"Effects of Silver and Gold on the Y Ba Cuo Superconducting Thin Films with the Use of AG/Cu/BaO/Y.sub.2 O.sub.3, . . . Structures", Chang, App. Phys, Lett., vol. 52, #11, Mar. 14, 1988, pp. 924-926.
"A Transmission Electron Microscope and Group Theoretical Study of the New Bi-Based High-Tc Superconductors, and some closely related Aurivillius Phases", Withers et al., J. Phys. C.:Solid State Phys., vol. 21, 1988 (Dec.), pp. 6067-6083.
"Bulk Bi Pb Sr CaCuO rt Squids Operating up to 101 K", Zhang et al., App. Phys. Lett., vol. 56, #16, Apr. 16, 1990, pp. 1579-1581.
IEEE Transactions on Magnetics, vol. 25, No. 2, Mar. 1989, pp. 2534-2537.
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Japanese Journal of Applied Physics, vol. 28, No. 10, Oct. 1989, pp. L1740-L1741.

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