| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10418409 | Journal of Materials Processing Technology | 2005 | 7 Pages |
Abstract
Further modifications on materials selection and ceramic processing varied the Nb incorporation extent significantly. Mechanochemically activated BaCO3 reactant and ultrafine TiO2 led to an early reaction. It provided a wide temperature range for Nb5+ incorporation as the BaCO3-TiO2 reaction progressed. Complete, homogeneous Nb incorporation in these materials allowed a strong grain growth inhibition on sintering and avoided accumulation of needle-shaped phases. Simultaneously to the grain growth inhibition phenomenon a considerable increase in titanium vacancy concentration was detected. Resulting materials stabilized in a pseudocubic phase and showed high dielectric features at room temperature.
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Authors
E. Brzozowski, M.S. Castro,