Melt-textured YBaCuO with high trapped fields up to 1.3 T at 77 K

CeO2-doped YBaCuO monoliths synthesized with a top-seeded melt growth proce ss in a conventional box furnace exhibited values of trapped magnetic field of up to 1.33 T at 77 K. To our knowledge, this is the highest value of tr apped field reported for a melt-textured YBaCuO monolith. A suitable temper ature profile and the use of high-density Y2BaCuO5 substrates led to reprod ucible single-domain crack-free samples investigated by optical and scannin g electron microscopy and crapped field measurements. The zero-field-cooled levitation forces at 77 K of standard samples amounted to 70-83 N. A trans port critical current density of up to 1.3 x 10(5) A/cm(2) in self field at 77 K was obtained.