Growth of large-domain YBa{sub 2}Cu{sub 3}O{sub x} with new seeding crystals of CaNdAlO{sub 4} and SrLaGaO{sub 4}.
Single crystals of CaNdAlO{sub 4} and SrLaGaO{sub 4} were used as seeds to grow large domains of YBa{sub 2}Cu{sub 3}O{sub x} for levitation applications. These crystals have high melting temperatures (> 1500 C) and similar lattice structures to that of YBa{sub 2}Cu{sub 3}O{sub x}. In a seeded melt-texturing method developed previously, the single crystals of CaNdAlO{sub 4}, SrLaGaO{sub 4}, and NdBa{sub 2}Cu{sub 3}O{sub 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 CaNdAlO{sub 4} and SrLaGaO{sub 4} increased considerably compared to that of the sample seeded with NdBa{sub 2}Cu{sub 3}O{sub x}. A model is proposed to describe the domain growth mechanism during seeded melt processing.
- Research Organization:
- Argonne National Laboratory (ANL)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 937744
- Report Number(s):
- ANL/ET/JA-16897
- Journal Information:
- Physica C, Journal Name: Physica C Journal Issue: 3-4 ; May 10, 1995 Vol. 246; ISSN 0921-4534; ISSN PHYCE6
- Country of Publication:
- United States
- Language:
- ENGLISH
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