Phase diagram in the Nd-Ba-Cu-O system
1993; Elsevier BV; Volume: 210; Issue: 1-2 Linguagem: Inglês
10.1016/0921-4534(93)90019-m
ISSN1873-2143
Autores Tópico(s)Magnetic and transport properties of perovskites and related materials
ResumoThe subsolidus phase relationship in the Nd-Ba-Cu-O system has been investigated at 890°C in air. In this study, the discrepancies in the published phase diagrams of this system have been clarified. For the BaO-rich region, CO2-free (CO2<3 ppm) air was necessary to synthesize equilibrium phase. Significant results include determination of the solubility limits of 0.04≤χ≤0.6 in Nd1+χBa2−χCu3O7+δ, the existence of a Nd2BaCuO10 solid solution, and discovery of a new phase, NdBa6Cu3Oy, in the BaO-rich region.
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