Open AccessTHE STRAIN DEPENDENCE OF THE TRANSPORT CURRENT CHARACTERISTICS IN Bi-2223 SILVER CLAMPED THICK FILM
Author(s) -
Zhihe Wang
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.518
Subject(s) - strain (injury) , materials science , critical current , condensed matter physics , stress (linguistics) , composite material , physics , superconductivity , medicine , linguistics , philosophy
The dependences of stress on strain, strain on the critical current density, and the relation of Jc(H) at several strains were measured in Bi-2223 silver clamped thick film. The results indicate that the stress-strain curve exists two strain transitions which are respectively correspond to the beginning and ending of breaking in Bi1.8Pb0.4Sr2Ca2Cu3Oy thick film. At △X/X≤2.5 % , the critical crrrent density Jc decreases slowly with △X/X increasing. At △X/X≥2.5 % , Jc decreases rapidly with △X/X increasing. As strain increases,the characteristics of Jc(H) decrease rapidly and the weak link junctions emerges obviously. The mi-crostructures show that the decrease of Jc and the variance of characteristics of Jc (H) relate to the breaking of intergrains and grains in the thick film.