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New high permittivity and low loss ceramics in the BaO–TiO2–Nb2O5 composition

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Abstract

New dielectric ceramics with formula BaTi3Nb4O17 and Ba6Ti14Nb2O39 have been prepared and characterized. BaTi3Nb4O17 was densified to 92% of TD after firing at 1310 °C for 4 h. However, Ba6Ti14Nb2O39 fired under optimized conditions (1260 °C for 4 h) showed only 85% TD together with secondary phase. The crystal system of both of the compositions is orthorhombic. The BaTi3Nb4O17 has εr∼56, Qu∼2100 (at 4.402 GHz), τf∼+86 p.p.m. K-1 and Ba6Ti14Nb2O39 as εr∼50, Qu∼650 (4.359 GHz) and τf∼+165 p.p.m. K-1. © 1998 Kluwer Academic Publishers

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Authors and Affiliations

  1. Regional Research Laboratory (CSIR), Trivandrum-, 695 019, India. E-mail

    R. Ratheesh, H. Sreemoolanadhan, S. Suma, M. T. Sebastian, K. A. Jose & P. Mohanan

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  1. R. Ratheesh
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  2. H. Sreemoolanadhan
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  3. S. Suma
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  4. M. T. Sebastian
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  5. K. A. Jose
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  6. P. Mohanan
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Ratheesh, R., Sreemoolanadhan, H., Suma, S. et al. New high permittivity and low loss ceramics in the BaO–TiO2–Nb2O5 composition. Journal of Materials Science: Materials in Electronics 9, 291–294 (1998). https://doi.org/10.1023/A:1008828807015

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