✦ LIBER ✦

Growth of large-domain YBa2Cu3Ox with new seeding crystals of CaNdAlO4 and SrLaGaO4

✍ Scribed by Donglu Shi; K. Lahiri; J.R. Hull; D. LeBlanc; M.A.R. LeBlanc; Antoni Dabkowski; Y. Chang; Y. Jiang; Z. Zhang; H. Fan

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 711 KB
Volume: 246
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(95)00174-3

No coin nor oath required. For personal study only.

✦ Synopsis

Single crystals of CaNdA104 and SrLaGaO 4 were used as seeds to grow large domains of YBa2Cu30 x for levitation applications. These crystals have high melting temperatures (> 1500°C) and similar lattice structures to that of YBa2Cu30 x. In a seeded melt-texturing method developed previously, the single crystals of CaNdAIO4, SrLaGaO4, and NdBa2Cu30 x were used as seeds for comparison. After melt processing, scanning electron microscopy analysis did not reveal any major differences in all these seeded melt-textured samples. However, the levitation forces in the samples seeded with single crystals of CaNdAIO 4 and SrLaGaO 4 increased considerably compared to that of the sample seeded with NdBa2Cu30 x. A model is proposed to describe the domain growth mechanism during seeded melt processing.

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