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Titolo:
ANOMALOUS THERMOELECTRIC-POWER OF AG-CONTAINING (BI,PB)(4)SR3CA3CU4OX-TYPE SUPERCONDUCTORS PREPARED BY A GLASS-CERAMIC METHOD
Autore:
CHATTERJEE S; BANERJEE S; CHAUDHURI BK; FROUMIN N; POLAK M; BARAM J;
Indirizzi:
INDIAN ASSOC CULTIVAT SCI,DEPT SOLID STATE PHYS CALCUTTA 700032 W BENGAL INDIA BEN GURION UNIV NEGEV,DEPT MAT ENGN IL-84105 BEER SHEVA ISRAEL
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 14, volume: 54, anno: 1996,
pagine: 10143 - 10149
SICI:
0163-1829(1996)54:14<10143:ATOA(>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
T-C SUPERCONDUCTORS; SINGLE-CRYSTALS; O COMPOUNDS; PHASE; THERMOPOWER; CRYSTALLIZATION; PRECURSORS; YBA2CU3O7; OXIDE; LEAD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
S. Chatterjee et al., "ANOMALOUS THERMOELECTRIC-POWER OF AG-CONTAINING (BI,PB)(4)SR3CA3CU4OX-TYPE SUPERCONDUCTORS PREPARED BY A GLASS-CERAMIC METHOD", Physical review. B, Condensed matter, 54(14), 1996, pp. 10143-10149

Abstract

Accurately measured electrical resistivity and thermoelectric power of (1-10 wt.%)-Ag-containing (Bi,Pb)(4)Sr3Ca3Cu4Ox-type superconductorsprepared by a glass-ceramic method are reported. Due to the presence of Ag, the volume fraction of the superconducting 2223 phase is found to be highly reduced. Though the variation of resistivity with temperature shows normal behavior, the temperature variation of thermoelectric power (or Seebeck coefficient S) of the Ag-containing glass-ceramic superconductor is highly nonlinear showing both positive and negative values consistently for all the compositions studied. Unlike many other oxide superconductors, the two-band model of Xin et al. [Phys. Rev. B 48, 557 (1993)] is not adequate to explain the said anomalous thermoelectric power data of the present system. The appearance of double peaks in the S versus temperature curves of the samples support the phonon drag effect.

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Documento generato il 01/10/20 alle ore 00:16:35