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Titolo:
Analyses of the electromagnetic properties of oxide superconductors by theSRPM method
Autore:
Miyairi, H; Kodaira, T; Yamazaki, S; Nakane, H; Haseyama, S; Kohayashi, S;
Indirizzi:
Kogakuin Univ, Dept Elect Engn, Shinjuku Ku, Tokyo, Japan Kogakuin Univ Tokyo Japan v, Dept Elect Engn, Shinjuku Ku, Tokyo, Japan Dowa Min Co Ltd, Superconduct Dept, Tokyo, Japan Dowa Min Co Ltd Tokyo Japan Min Co Ltd, Superconduct Dept, Tokyo, Japan
Titolo Testata:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
fascicolo: 2, volume: 9, anno: 1999,
parte:, 2
pagine: 1924 - 1927
SICI:
1051-8223(199906)9:2<1924:AOTEPO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Miyairi, H Kogakuin Univ, Dept Elect Engn, Shinjuku Ku, Tokyo, Japan Kogakuin Univ Tokyo Japan ct Engn, Shinjuku Ku, Tokyo, Japan
Citazione:
H. Miyairi et al., "Analyses of the electromagnetic properties of oxide superconductors by theSRPM method", IEEE APPL S, 9(2), 1999, pp. 1924-1927

Abstract

Delta Z (the difference in the impedance of a solenoid coil with and without a superconductive sample) of 0, 10, 20 and 30wt% Ag-doped YBaCuO(c-axis oriented) and a Bi-based sintered sample were measured by the SRPM method between 200Hz and 1MHz at room temperature and liquid N-2 temperatures. At room temperature, frequency dependence of;Delta Z was observed in both samples. These dependencies were analyzed using a serial circuit having the sameresistance and inductance as the samples by which the existence of Delta Zwas confirmed. Below T-c, only Delta Z of a Bi-based sample was measured between 200Hz and 1MHz. Delta R(the real part of Delta Z) was evaluated as afunction of frequency(f). Delta R from 0.25 to 1MHz is assumed to be proportional to f(2)(normal skin effect). Delta R from 1kHz to 50kHz is proportional to f(5/3) (anomalous skin effect), Delta R from 50kHz to 700kHz is proportional to f(2/3) (anomalous skin effect). It was found that Delta R between 1kHz and 700kHz agrees with the property obtained by the equation confirming that it is in the region of anomalous skin effect.

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Documento generato il 05/04/20 alle ore 13:37:25