Citation
K. Yoshida et al., Superconductivity in Bi-2212 thin films of Bi(2)Ln(0.3)Ca(2.7)Cu(2)O(z) (Ln = Pr, Nd, Sm, Eu and Gd) prepared by laser ablation method, PHYSICA C, 329(4), 2000, pp. 292-297
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534
→ ACNP
Volume
329
Issue
4
Year of publication
2000
Pages
292 - 297
Database
ISI
SICI code
0921-4534(20000215)329:4<292:SIBTFO>2.0.ZU;2-E
Abstract
The Bi-2212 thin films of the Bi(2)Ln(0.3)Ca(2.7)Cu(2)O(z) system (Ln = Pr,
Nd, Sm, Eu and Gd) have been prepared by the laser ablation method. The fi
lms are of metastable Bi-2112 phase, which has not been synthesized by the
solid state reaction method. The highest zero resistivity temperature (T-cz
) of 57 K has been found for the film with Ln = Pr, and the valence of Pr d
etermined by XPS measurement was trivalent. Further, each of the films with
various Ln elements had a T-cz value higher by 12-45 K than the correspond
ing sample of the bulk Bi(2)Ln(0.5)Ca(2.5)Cu(2)O(z) system. (C) 2000 Elsevi
er Science B.V. All rights reserved.