Abstract

The advantages of the use of the Sm-123 seed and porous Y-211 substrate have been studied by melt texturing of large single domain Y-123 samples. Only short range for development of single domain from the seed with maximal rate has been found below the crystallization onset. The reason for nucleation of the secondary domain is the accumulation of CuO before crystallization front. The optimal size distribution of Y-211 inclusions provides Jc and trapped magnetic flux data of 65000 A/cm 2 and above 850 Gs/cm 3, respectively, in large single domain samples.

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