CRYSTAL-GROWTH AND SUPERCONDUCTIVITY OF (SM0.75CE0.25)(2)SR2CU2NBO10-DELTA

Citation
H. Samata et al., CRYSTAL-GROWTH AND SUPERCONDUCTIVITY OF (SM0.75CE0.25)(2)SR2CU2NBO10-DELTA, Journal of physics and chemistry of solids, 59(9), 1998, pp. 1585-1590
Citations number
7
Categorie Soggetti
Physics, Condensed Matter",Chemistry
ISSN journal
00223697
Volume
59
Issue
9
Year of publication
1998
Pages
1585 - 1590
Database
ISI
SICI code
0022-3697(1998)59:9<1585:CASO(>2.0.ZU;2-I
Abstract
Single crystals of (Sm0.75Ce0.25)(2)Sr2Cu2NbO10-delta (SCSCNO) were gr own by a flux method using SrCu6Oy as flux, and their morphology and s uperconductivity were investigated. We found that the as-grown crystal consists of SCSCNO and SmSr2Cu2NbO8 (SSCNO) crystal layers, with the SCSCNO layer being sandwiched between two non-superconducting SSCNO cr ystal layers. The SSCNO layers can be removed by chemical etching with HCl solution. The SCSCNO crystal shows a superconducting transition a t about 17 K, and the superconducting volume fraction increased when t he crystals were annealed in an oxygen atmosphere. (C) 1998 Elsevier S cience Ltd. All rights reserved.