Kambara, M and HariBabu, N and Shi, Y and Cardwell, DA (2001) Crystal growth of melt-textured Nd-123 under 1% oxygen partial pressure atmosphere. IEEE Transactions on Applied Superconductivity, 11. pp. 3442-3445. ISSN 1051-8223Full text not available from this repository.
Crystal growth of melt-textured Nd-123 pseudo-crystals was investigated via an isothermal solidification with top-seeding technique under a 1%O2 in N2 atmosphere. Non-steady state solidification was observed at low undercooling, in contrast to an almost linear growth at higher undercooling. Similar to processing in air, the substitution of Nd/Ba was found to decrease from the seed position to the edge of the crystal. In addition, the volume fraction of Nd-422 particles decreased in the solid as solidification proceeded. As a result of these microstructural inhomogeneities, the critical temperature and the critical current density varied within the crystal even for samples processed isothermally, despite the narrow solid solution range of the Nd-123 phase under a reduced pO2 atmosphere.
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|Date Deposited:||18 May 2016 18:34|
|Last Modified:||25 Aug 2016 06:50|