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Recebido em 6/6/06; aceito em 15/3/07; publicado na web em 30/7/07 The crystallization process of co-precipitated Y 1.5 Gd 1.5 Fe 5 O 12 powder heated up to 1000 o C at rate of 5 °C min -1 was investigated. Above 810 o C crystalline Y 1.47 Gd 1.53 Fe 5 O 12 was obtained with a lattice parameter of 12.41 Å and a theoretical density of 5.84 g cm -3 . Dry pressed rings were sintered at 1270 and 1320 o C, increasing the grain-size from 3.1 to 6.5 μm, the theoretical density by 87.6 to 95.3% anddoi:10.1590/s0100-40422007000700009 fatcat:ynuddbd4nfg57ereb5kgd7s5lq