Magnetization, Flux Creep and Transport in Tl-Ca-Ba-Cu-O Thin Films
The enormous experimental and theoretical effort on high-temperature copper-oxide-based superconductors began with the La-Ba-Cu-O system , shifted to the Y-Ba-Cu-O system , and recently has focused on the Bi-Ca-Sr-Cu-O  and Tl-Ca-Ba-Cu-O  systems. Tl-Ca-Ba-Cu-O ceramics have zero resistance and Meissner effect up to 125 K [5,6], and exhibit at least five structurally distinct superconducting phases.[7–10] Two common phases, Tl2Ca2Ba2Cu3Ox (Tl-2223 with a c-axis of 35.9 Å) and Tl2CaBa2Cu2Oy (T1-2122, c = 29.3 Å), contain double T1-O planes sandwiched by Ba-O sheets and blocks of double (T1-2122) or triple (T1-2223) Cu-O planes separated by intermediate Ca layers.
KeywordsCritical Current Density Meissner Effect Critical State Model Flux Creep High Critical Current Density
Unable to display preview. Download preview PDF.
- 19.M. E. McHenry, M. P. Maley, E. L. Venturini and D. S. Ginley, submitted.Google Scholar
- 21.E. L. Venturini, J. F. Kwak, D. S. Ginley, B. Morosin and R. J. Baughman, in preparation.Google Scholar
- 22.J. F. Kwak, E. L. Venturini, R. J. Baughman, B. Morosin and D. S. Ginley, Cryogenics (accepted).Google Scholar