| Issue |
J. Phys. I France
Volume 5, Number 6, June 1995
|
|
|---|---|---|
| Page(s) | 623 - 630 | |
| DOI | https://doi.org/10.1051/jp1:1995155 | |
J. Phys. I France 5 (1995) 623-630
Remarkable Influence of Heat Treatment on the Structural and Superconducting Properties of Y 1-xPr xSrBaCu 3O 6+z
A. Das and R. SuryanarayananLaboratoire de Physique des Solides de Bellevue, CNRS, 92195 Meudon, France
(Received 22 February 1995, revised 27 March 1995, accepted 19 April 1995)
Abstract
Preparation, structural and superconducting properties of Y
1-xPr
xSrBaCu
3O
6+z
(YPSBCO) are reported. Preheating of the samples in argon prior to oxygen annealing not only
increased the orthorhombic splitting but
also was enhanced by 5 to 14 K depending on
x. Furthermore, this treatment induced superconductivity in the
x=0.70 sample and
was found to be 14 K. The slope d
/d
x decreased considerably compared to
Y
1-xPr
xBa
2Cu
3O
6+z, where superconductivity was destroyed for
. The
data seem to indicate that a knowledge of the structural and defect chemistry is essential to
understand the behaviour of Pr in YPSBCO.
© Les Editions de Physique 1995