ENHANCED DIAMAGNETISM IN YBA2CU3O7-DELTA BY HYDROGEN-PLASMA TREATMENT

Authors
LEE MW TAI MF LEE HJ HWANG HL KAO HCI
Citation
Mw. Lee et al., ENHANCED DIAMAGNETISM IN YBA2CU3O7-DELTA BY HYDROGEN-PLASMA TREATMENT, Physica. C, Superconductivity, 230(3-4), 1994, pp. 292-296
Citations number
23
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
230
Issue
3-4
Year of publication
1994
Pages
292 - 296
Database
ISI
SICI code
0921-4534(1994)230:3-4<292:EDIYBH>2.0.ZU;2-Q
Abstract
We report that the diamagnetism of as-grown YBa2Cu3O7-delta powders ca n be enhanced by treatment with RF-generated hydrogen plasma. The fiel d-cooling susceptibility at 5 K is found to increase by up to 24%. The enhancement is reproducible for all five samples studied. The lattice parameter c decreases after hydrogenation. For a sample treated for t he shortest period, its pinning potential, obtained from magnetic rela xation measurements, is reduced following H-treatment.