PARTIAL MELTING OF BULK NDBA2CU3O7-DELTA

Authors
MARELLA M TOMASELLI M MEREGALLI L GERDEGHINI C SIRI AS
Citation
M. Marella et al., PARTIAL MELTING OF BULK NDBA2CU3O7-DELTA, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 16(10-11), 1994, pp. 1723-1728
Citations number
5
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
16
Issue
10-11
Year of publication
1994
Pages
1723 - 1728
Database
ISI
SICI code
0392-6737(1994)16:10-11<1723:PMOBN>2.0.ZU;2-O
Abstract
Two procedures of partial melting of bulk NdBa2Cu3O7-delta, in air and in reduced oxygen pressure, were developed. When the treatment was ca rried out in air, poor superconducting properties were observed. On th e contrary, when the treatment was carried in P-O2 = 1.3 mbar, good pr opel-ties were obtained, with T-c (onset) = 93 K and 100% shielding at lower temperatures. Near full density (2.5 x x 2.5 x 28) mm(3) Nd1.07 Ba1.89Cu3.04O7-delta bars, with domains extending in the mm size range , were obtained.