Pregled bibliografske jedinice broj: 47881
Resistivity anomalies above 90K in ceramic Na_xWO_(3-delta)
Resistivity anomalies above 90K in ceramic Na_xWO_(3-delta) // Journal of Low Temperature Physics 117 / Rapp, Ö. ; Karlsson, U. (ur.).
Stockholm: Kluwer Academic Publishers, 1999. (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Resistivity anomalies above 90K in ceramic Na_xWO_(3-delta)
Autori
Brglez, A. ; Malić, B. ; Mihailović, Dragan ; Korin-Hamzić, Bojana ; Basletić, Mario ; Zadro, Krešo ; Hamzić, Amir
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Journal of Low Temperature Physics 117
/ Rapp, Ö. ; Karlsson, U. - Stockholm : Kluwer Academic Publishers, 1999
Skup
International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, MOS 99
Mjesto i datum
Stockholm, Švedska, 28.07.1999. - 02.08.1999
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
high T_c surface superconductivity; ceramic superconductors; percolative superconductivity
Sažetak
Na_xWO_3 has been found to exhibit anomalies in the region of 90-120 K, which were recently attributed by Reich and Tsabba (Eur.Phys.J.B 9,1 (1999)) to possible high-temperature surface superconductivity with T_c = 91 K. We report on the synthesis, microstructure, SQUID magnetization and transport measurements of ceramic Na_xWO_(3-delta). We conclude that the intrinsic behavior of the material appears to be activated above 100 K. Below 100 K, there are anomalies which are observed, but may be related to dielectric breakdown. The possible origins of this anomalous behavior are discussed in terms of possible percolative superconductivity or charge-density wave formation.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Ustanove:
Institut za fiziku, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
