MONOTONIC DEPENDENCE OF J(C) ON MAGNETIC-FIELD IN TWINNED CRYSTALS OFYBA2CU3O7-DELTA AND ERBA2CU3O7-DELTA

Authors
DAUMLING M ERB A WALKER E GENOUD JY FLUKIGER R
Citation
M. Daumling et al., MONOTONIC DEPENDENCE OF J(C) ON MAGNETIC-FIELD IN TWINNED CRYSTALS OFYBA2CU3O7-DELTA AND ERBA2CU3O7-DELTA, Physica. C, Superconductivity, 257(3-4), 1996, pp. 371-374
Citations number
16
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
257
Issue
3-4
Year of publication
1996
Pages
371 - 374
Database
ISI
SICI code
0921-4534(1996)257:3-4<371:MDOJOM>2.0.ZU;2-K
Abstract
We have investigated the magnetic hysteresis and in particular the ''f ishtail'' anomaly in crystals of YBa2Cu3O7-delta and ErBa2Cu3O7-delta, oxygenated in various fashions. For a high-pressure (100 bar) oxygena tion this anomaly disappears, but only at high annealing temperature ( 700 degrees C). It is concluded that for proper oxygenation the diffus ion distance for oxygen must be larger than the size of the crystals, leading to a more homogeneous oxygen distribution throughout the cryst al.