The properties of bulk melt textured YBCO disks have been investigated with respect for use as trapped field magnets. Large single-domain grains up to 24 mm in diameter were obtained by a modified melt process using Sm-123 as seed crystal. Typical values of the maximum trapped field BD on the surface of the disks are 0.6 T. The temperature dependence of Bo was measured in the 1 mm gap between two single-grain disks. The maximum trapped field increased from 1 T at 77 K up to 9 T at 47 K which is the highest trapped field achieved in non-irradiated samples. We observed an exponential decrease of the trapped field with increasing temperature, which can be explained by flux creep in the framework of collective pinning. The trapped field at lower temperatures was found to be limited by the mechanical strength of the samples for which a value of 25 MPa was estimated.
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