EFFECTS OF V-DOPING OR CR-DOPING ON PHASE-FORMATION, ELECTRIC PROPERTIES AND SUPERCONDUCTIVITY OF THE 3212-TYPE PHASE PB2SR2(CA0.5Y0.5)CU3OZ

Authors
CHEN ZY QIAN YT LUO HM QU B SHENG ZZ WANG LM
Citation
Zy. Chen et al., EFFECTS OF V-DOPING OR CR-DOPING ON PHASE-FORMATION, ELECTRIC PROPERTIES AND SUPERCONDUCTIVITY OF THE 3212-TYPE PHASE PB2SR2(CA0.5Y0.5)CU3OZ, Modern physics letters B, 10(13), 1996, pp. 609-614
Citations number
7
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter","Physycs, Mathematical
Journal title
Modern physics letters B → ACNP
ISSN journal
02179849
Volume
10
Issue
13
Year of publication
1996
Pages
609 - 614
Database
ISI
SICI code
0217-9849(1996)10:13<609:EOVOCO>2.0.ZU;2-J
Abstract
The effects of vanadium or chromium on the formation, electric propert ies and superconductivity of Pb-3212 phase (Pb2Cu)Sr-2(Ca0.5Y0.5)Cu2Oz are studied. The sites of V or Cr in PbO-CuO delta-PbO structure unit for Pb-3212 phase is also investigated. Compared with the effects of Cr-doping, V can totally substitute Ca to form a new compound Pb2Sr2(V 0.5Y0.5)Cu3Oz1 and V has relatively greater substitution amount in (Pb (2-x)M(x))Sr-2(Ca0.5Y0.5)Cu3O2 (M = Cr or V). Moreover, the resistivit y and superconductivity of the above samples decrease with increasing V or Cr amount. Among them, the effects of V is greater, and its locat ion (in Pb or Ca site) also affects greatly the superconductivity.