In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 31, No. 4R ( 1992-04-01), p. 1020-
Abstract:
Superconducting Bi-Pb-Sr-Ca-Cu-O (2223 as the major phase) films were prepared by the dipping-pyrolysis process on MgO(100) substrates using a metal naphthenate solution. From the XRD and SEM-EDX analyses, the formation of the 2223 phase with well-developed platelike grains was facilitated in the films by placing a Pb-containing BSCCO pellet on the surface of the prefired films during the heat treatment (850°C in air) and by the use of a nominal composition of Bi:Pb:Sr:Ca:Cu=1.8:0.4:2.0:2.4:3.6 in molar ratio, i.e., a Ca-and-Cu-rich composition compared to the 2223 phase. The values of T c,zero and J c (77 K) were 106 K and 2×10 3 A/cm 2 , respectively. The dependence of critical current densities on temperature showed that J c was approximately proportional to (1- T / T c ) 3/2 , which corresponds to the results of the promixity junction tunneling (SNIS) model.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.31.1020
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1992
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
