EFFECT OF FORMING PRESSURE ON THE CRITICAL-TEMPERATURE IN YBA2CU3O7-DELTA SUPERCONDUCTORS

Authors
ALSHIBANI K ALAQL A ALMUEZZIN A HUMEIDA H NAKHMEDOV EP FIRAT T OZTURK O SACLI OA
Citation
K. Alshibani et al., EFFECT OF FORMING PRESSURE ON THE CRITICAL-TEMPERATURE IN YBA2CU3O7-DELTA SUPERCONDUCTORS, Physica status solidi. b, Basic research, 189(1), 1995, pp. 177-184
Citations number
38
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
189
Issue
1
Year of publication
1995
Pages
177 - 184
Database
ISI
SICI code
0370-1972(1995)189:1<177:EOFPOT>2.0.ZU;2-E
Abstract
The effect of pressure on the critical temperature T-c is studied for YBa2Cu3O7-delta compounds prepared under various forming pressures. A systematic decrease in lattice parameters is observed with forming pre ssure. Resistivity measurements show an increase of the onset temperat ure T-c0 with forming pressure. A value of dT(c0)/dP approximate to (0 .070 +/- 0.010) x 10(-8) K/Pa is determined. A new mechanism based on the variation of the interlayer tunneling integral t(perpendicular to) is used to analyse the experiment results.