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- W2062214114 abstract "The efiect of starting materials Ba-Ti-O compound mixture, 2BaTiO3+7TiO2 (type A) or BaTi4O9+BaTi5O11 (type B), on the characteristics of the Ba2Ti9O20 materials was in- vestigated. Both materials can be sintered to the same high density (>96% T.D.) with the same large dielectric constant (K= 35»38). While the microwave dielectric constant (K) of the materials are not sensitive to detailed microstructure of the samples, the Q £ f-value of the materials correlates with the microstructure of the samples closely and therefore varies appre- ciably with the processing details. Comparing with the two-step densiflcation processes, the one-step densiflcation processes improved pronouncedly the characteristics of the type B ma- terials, but degraded markedly those of the type A materials. The possible explanation for such a phenomenon is that direct sintering of type A mixture requires complicated reaction steps to form the Hollandite-like phase and thus leads to non-uniformed microstructure, which results in inferior microwave properties. DOI: 10.2529/PIERS060903001851" @default.
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- W2062214114 date "2007-01-01" @default.
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- W2062214114 title "Improving the Characteristics of Ba2Ti9O20 Materials by Using Pre-reacted Ba-Ti-O Compounds" @default.
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- W2062214114 doi "https://doi.org/10.2529/piers060903001851" @default.
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