Naslov
Flux pinning in Ag-clad (BI, PB)(2)Sr2Ca2Cu3o10+y tape

Autori
Kušević, Ivica ; Babić, Emil ; Ivkov, Jovica ; Marohnić, Željko ; Liu, H.K. ; Hu, Q.Y. ; Dou, S.X.

Izvornik
Solid state communications (0038-1098) 92 (1994), 9; 735-739

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ag-clad (Bi, Pb)2Sr2Ca2Cu3O10+y

Sažetak
The resistance of a well-characterized Ag-clad (Bi, Pb)(2)Sr2Ca2CU3O10+y (hereafter Bi2223) tape containing about 2% of Bi22 12 phase has been measured in the temperature (T) range 77-120K and magnetic field (B) up to 1T. The measurements were performed on two sections of the same tape showing very different critical current densities (J(ct)(77K0T)=6 100(S-A) and 23 000 A/cm(2) (S-B), respectively) as well as on a bare core of sample S-B. All resistances showed an initial exp(-U(T, B)/k(B)T) variation enabling the determination of the pinning potential U(T, B). The values of U-0(B)drop V(T-->0, B) were nearly the same for all samples and showed rather modest anisotropy for B perpendicular to c and B parallel to c consistent with the imperfect grain alignment in the studied tape. Since U-0(B) of the tape is larger than those of the best Bi2212 and Bi2223 epitaxial films the intragranular flux pinning is not limiting J(c) of Bi2223 tapes in low fields

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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