ENHANCEMENT OF CRITICAL-TEMPERATURE UP TO 100-K OF YBCO OZONE ANNEALED PELLETS BY DEUTERIUM ABSORPTION

Authors
CELANI F BOUTET M DIGIOACCHINO D SPALLONE A TRIPODI P PACE S POLICHETTI M
Citation
F. Celani et al., ENHANCEMENT OF CRITICAL-TEMPERATURE UP TO 100-K OF YBCO OZONE ANNEALED PELLETS BY DEUTERIUM ABSORPTION, Physics letters. A, 183(2-3), 1993, pp. 238-242
Citations number
12
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
183
Issue
2-3
Year of publication
1993
Pages
238 - 242
Database
ISI
SICI code
0375-9601(1993)183:2-3<238:EOCUT1>2.0.ZU;2-U
Abstract
In this paper we report preliminary results about transition temperatu res of YBa2Cu3O7 pellets loaded with high pressure deuterium gas. Afte r the gas loading non-superconducting phases were not detected by X-ra y diffraction. The complex magnetic ac susceptibility has been measure d as a function of the temperature. One D-YBCO pellet exhibited a magn etic critical temperature (T(c)) as high as 100 K and the absence of a significant weakening of the superconducting grain coupling. Another sample, with a T(c) of 95.8 K in free air, showed a T(c) onset as high as 102 K under 35 bar of deuterium gas pressure.