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Journal
2007 | 5 | 4 | 637-649
Article title

Electrical characteristics of HTS/manganite double layers

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EN
Abstracts
EN
Superconductor/ferromagnetic (SC/FM) Y1Ba2Cu3O7−δ
/La0.7Sr0.3MnO3 (YBCO/LSMO) double layers were prepared on LaAlO3 substrates by magnetron sputtering and their electrical and microwave parameters were investigated at 77 K. In the theoretical plan, simple formulas for estimation of the sensitivity of the SC surface impedance to the concentration changes of normal charge carriers were proposed and the surface resistance R
S peculiarities of both SC and FM surfaces were described. Thinner YBCO/LSMO structure was characterized by lower SC parameters and higher surface resistance R
S at ∼ 4 GHz. The difference of R
S of sample SC surfaces was interpreted as due to a difference between the normal charge carrier densities in these samples. R
S of the FM surface was higher than that of the SC surface due to the microwave losses of the magnetic subsystem. A peak of the microwave losses, observed in the thicker double layer, was assumed to be caused by uniform FMR in the LSMO film.
Publisher
Journal
Year
Volume
5
Issue
4
Pages
637-649
Physical description
Dates
published
1 - 12 - 2007
online
1 - 12 - 2007
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-007-0036-3
Identifiers
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