NDBCO MELTING AND SOLIDIFICATION BY A ZONE-MELTING METHOD

Authors
YAO X FURUYA K NAKAMURA Y WEN J ENDOH A SUMIDA M SHIOHARA Y
Citation
X. Yao et al., NDBCO MELTING AND SOLIDIFICATION BY A ZONE-MELTING METHOD, Journal of materials research, 10(12), 1995, pp. 3003-3008
Citations number
13
Categorie Soggetti
Material Science
Journal title
Journal of materials research → ACNP
ISSN journal
08842914
Volume
10
Issue
12
Year of publication
1995
Pages
3003 - 3008
Database
ISI
SICI code
0884-2914(1995)10:12<3003:NMASBA>2.0.ZU;2-W
Abstract
In the Nd-Ba-Cu-O system, a directional structure produced by a perite ctic reaction has been observed. On heating, the sintered Nd1Ba2CU3O6delta (Nd123) precursor formed a rod-like directional structure of Nd4 Ba2-Cu2O10 (Nd422) phase. These Nd422 rods became thicker from the mel ting interface to the solidified interface. The [100] direction of Nd4 22 crystal is parallel to the axis of Nd422 rod and the sample pulling direction. Moreover, Nd422 rod spacing was observed as a function of growth rate and decreased with an increase of growth rate. In addition , with an increase of growth rate, Nd123 solidified interface morpholo gies changed from planar, cellular to equiaxed.