Tensile stress effects on critical current densities of coated conductors

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Tensile stress dependent critical current densities (J(c)) of two types of coated conductors, which were fabricated on a pure Ni tape and a NiCr (13 atomic %) tape respectively, were measured at 77 K, Until the stress reached certain values (K-c), the J(c) of each sample was constant, it then began to decrease as the stress was increased further. The K-c for tapes of Ni and NiCr were similar to 100 MPa and similar to 270 MPa respectively, which means K-c was enhanced almost three times for the sample fabricated on the NiCr. According to the detailed changes of voltage signals for applied currents under various stresses, the degradation process of each sample could be divided into four different regimes.
Publisher
IOP PUBLISHING LTD
Issue Date
2001
Language
English
Article Type
Article
Keywords

SUPERCONDUCTING TAPES; FILMS; FABRICATION; YBA2CU3O7; LOSSES

Citation

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, v.14, no.2, pp.109 - 112

ISSN
0953-2048
DOI
10.1088/0953-2048/14/2/309
URI
http://hdl.handle.net/10203/78438
Appears in Collection
PH-Journal Papers(저널논문)
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