THE RESISTIVE TRANSITION IN HIGH MAGNETIC-FIELDS IN YBA2(CU1-XZNX)3O7-DELTA

Citation
Eb. Molz et al., THE RESISTIVE TRANSITION IN HIGH MAGNETIC-FIELDS IN YBA2(CU1-XZNX)3O7-DELTA, Physica. B, Condensed matter, 194, 1994, pp. 1871-1872
Citations number
2
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
2
Pages
1871 - 1872
Database
ISI
SICI code
0921-4526(1994)194:<1871:TRTIHM>2.0.ZU;2-X
Abstract
We have investigated the resistive transition in a series of Zn substi tuted ceramic YBCO samples, both in zero field, and in fields up to 17 .5 T. We studied samples with Zn concentrations x of up to 10 %. The l owest T(c) was observed for x = 9%, where T(c) (R = 0) is at 700 mK. T he normal state resistance shows a linear temperature dependence down to the superconducting onset. For the x = 9 % Zn sample, this linear r egion extends to 1. 8 K. In magnetic fields the resistive transition b roadens considerably, and the R = 0 transition moves to below 100 mK. The resistive transitions can be understood in terms of thermally acti vated flux creep.