GAMMA-RAYS IRRADIATION OF YBACUO

Authors
TIMKO M MATAS S KOVAC J KAVECANSKY V ZENTKOVA M SARGANKOVA I BUNDA V
Citation
M. Timko et al., GAMMA-RAYS IRRADIATION OF YBACUO, IEEE transactions on magnetics, 30(2), 1994, pp. 1184-1186
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
30
Issue
2
Year of publication
1994
Part
2
Pages
1184 - 1186
Database
ISI
SICI code
0018-9464(1994)30:2<1184:GIOY>2.0.ZU;2-T
Abstract
A YBa2Cu3O7-x ceramic was sequentially irradiated with Co-60 gamma-ray s of 155.4 R/min in dose rate; up to the dose 5000 Gy at ambient tempe rature, AC susceptibility and magnetization were measured as a functio n of temperature and magnetic field, respectively. The transition to t he superconducting state has decreased roughly linearly with radiation dose at a rate of 6.210(-4) K/Gy probably as a consequence of the ch ange of carrier concentration in CuO2, planes. The intragrain critical current density has increased for lower and higher radiation doses. F ormation of the extra centres of pinning by gamma irradiation is sugge sted.