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Magnetic penetration depth of YBa2Cu3O(7-delta) thin films determined by the power transmission methodA power transmission measurement technique was used to determine the magnetic penetration depth (lambda) of YBa2Cu3O(7-delta) superconducting thin films on LaAlO3 within the 26.5 to 40.0 GHz frequency range, and at temperatures from 20 to 300 K. Values of lambda ranging from 1100 to 2500 A were obtained at low temperatures. The anisotropy of lambda was determined from measurements of c-axis and a-axis oriented films. An estimate of the intrinsic value of lambda of 90 +/- 30 nm was obtained from the dependence of lambda on film thickness. The advantage of this technique is that it allows lambda to be determined nondestructively.
Document ID
Document Type
Heinen, Vernon O. (NASA Lewis Research Center Cleveland, OH, United States)
Miranda, Felix A. (NASA Lewis Research Center Cleveland, OH, United States)
Bhasin, Kul B. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1992
Publication Information
Publication: Solid State Technology Branch of NASA Lewis Research Center
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.
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