Method for detection of weak links in the current path of electr

Details Method for detection of weak links in the current path of electr Method for detection of weak links in the current path of electr

1989-03-20

1990-02-27

Strecker, Gerard R.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Superconductors

505843, G01N 2700

Patent

active

049049291

ABSTRACT:
Weak links in electrically continuous superconductors are detected by observing the effect of magnetic field modulation on the dc resistance of superconductors. The phase detected response to the magnetic modulation shows a peak at T.sub.c. The presence of a second peak at temperatures below T.sub.c, and concomitantly the appearance of a tail on the low temperature end of the dc resistance vs temperature curve indicates the presence of weak links in the superconductor.

REFERENCES:
Khachatuman et al., "Changes in Microwave. . .", Mat. Res. Soc. Symp. Proc., vol. 99, Materials Research Society, 1988, pp. 383-386, Symposium held Dec. 4, 1987.
Kwak et al., "Evidence for Intergrannular Weak Links. . .", Extended Abstracts, High Temperature Superconductors II, Materials Research Society, Apr. 9, 1988, pp. 163-166.

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