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Synthesis of Y-Ba-Cu-O Ultrafine Powders by Spray Drying and Subsequent Calcination under Low Pressure

1991; Institute of Physics; Volume: 30; Issue: 5A Linguagem: Inglês

10.1143/jjap.30.l802

1347-4065

Masanobu Awano, Keiko Kani, Y. Takao, Hiroyoshi Takagi,

Theoretical and Computational Physics

The calcination of homogeneous precursor powder of a Y-Ba-Cu-O superconductor derived from a spray drying and low-pressure calcining method led us to obtain fine homogeneous particles with a particle size of about 0.08 µm. The factors of minimization of the particle size were uniformity of the precursor powder and avoidance of increasing BaCO 3 . Sintered bodies obtained by sintering at relatively lower temperatures showed the texture with sub-micron size.