New technique for measuring the microwave penetration depth in high- Tc superconducting thin films

The ferromagnetic resonance (FMR) technique has been used to obtain the microwave (MW) penetration depth in high-temperature superconductor (HTSC) thin film. An FMR-signal-generating thin permalloy film was sandwiched in between of two YBa 2Cu 3O 7 films to probe the MW field penetrating through the...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 284; pp. 953 - 954
Main Authors Durusoy, H.Z., Aktaş, B., Yilgin, R., Terada, N., Ichikawa, M., Kaneda, T., Tagirov, L.R.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2000
Subjects
Ferromagnetic resonance
Microwave surface impedance
Penetration depth
YBaCuO films
Ferromagnetic resonance
Microwave surface impedance
YBaCuO films
Penetration depth
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Summary:The ferromagnetic resonance (FMR) technique has been used to obtain the microwave (MW) penetration depth in high-temperature superconductor (HTSC) thin film. An FMR-signal-generating thin permalloy film was sandwiched in between of two YBa 2Cu 3O 7 films to probe the MW field penetrating through the films. Below the superconducting transition temperature T c the HTSC films started to screen the marker inside the sandwich. The low-temperature saturation value λ ab≃1250 A ̊ at 25 K has been deduced for our c-axis films from the temperature dependence of the FMR signal intensity below T c.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)02268-1