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Penetration Depth Measurements of YBa2Cu3O7-δ at 4 MHz

Published online by Cambridge University Press:  28 February 2011

H. Wiesmann ,
R. R. Corderman ,
A. R. Moodenbaugh ,
M. W. Ruckman  and
Myron Strongin
H. Wiesmann
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
R. R. Corderman
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
A. R. Moodenbaugh
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
M. W. Ruckman
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
Myron Strongin
Affiliation:
Brookhaven National Laboratory, Upton, NY 11973
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Abstract

Measurements were made of the penetration depth of bulk and powder samples of YBa2Cu3O7-δ. The samples were placed in an inductor which was part of the resonant circuit of a 4 MHz tunnel diode oscillator. The oscillator was stable to at least 1 part in 106 at 77 K. Changes in the sample susceptibility were easily detected by changes in the oscillator frequency. Analysis of the smallest powders fabricated gave a value of the measured penetration depth λmea = 0.23 μm. The measurement methodology is quantitative and the value of Xmea is believed to be an upper bound of the true penetration depth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 387
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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