Skip to main content Accessibility help
×
Home

Effect of Divalent Dopants on Properties of Ba3.75Nd9.5Ti18O54 Microwave Dielectric Resonators

  • R. Ubic (a1), I. M. Reaney (a1), W. E. Lee (a1), J. Samuels (a2) and E. Evangelinost (a2)...

Abstract

Pellets in the ternary solid-solution Ba6–3xNd8+2xTi18O54 (x=0.75) have been processed to near theoretical density by mixed-oxide synthesis, and their dielectric properties determined to be εr≈89, Qf> 10,000, and τf≈+60ppm/°C at microwave frequencies. Similar ceramics with Ca, Sr, and Pb partially substituted for Ba were also processed and analysed. Both Ca and Sr were found to increase εr to 100–105 but significantly lower Qf and inflate τf. While Pb substitution also lowered Qf, it had no significant effect on εr and beneficially suppressed τf to values from -16 to +8ppm/°C, tunable with Pb content, strongly suggesting that these materials may be useful for commercial applications.

Copyright

References

Hide All
1 Sun, J.-S., Wei, C.-C., and Wu, L., J. Mater. Sci. 27 [21], p. 5818–22 (1992).
2 Laffez, P., Desgardin, G., and Raveau, B., J. Mater. Sci. 30 [1], p. 267273 (1995).
3 Ohsato, H., Kato, H., Mizuta, M., Nishigaki, S., and Okuda, T., Jap. J. Appl. Phys., Part 1 34 [9B], p. 54135417(1995).
4 Durand, J.M. and Boilot, J.P., J. Mater. Sci. Lett. 6, p. 134–36 (1987).
5 Valant, M., Suvorov, D., and Kolar, D., in Proceedings of the Fourth International Conference on Electronic Ceramics and Applications 1, (European Ceramic Society, 1994), p. 6972.
6 Kolar, D., Gaberšček, S., Stadler, Z., and Suvorov, D., Ferroelectrics 27, p. 269–72 (1980).
7 Nishigaki, S., Kato, H., Yano, S., and Kamimura, R., Bull. Am. Ceram. Soc. 66 [9], p. 1405–10(1987).
8 Wu, J.-M. and Chang, M.-C., J. Am. Ceram. Soc. 73 [6], p. 15991605 (1990).
9 Wakino, K., Minai, K., and Tamura, H., J. Am. Ceram. Soc. 67 [4], p. 278281 (1984).
10 Negas, T. and Davies, P.K. in Materials and Processes for Wireless Communications, edited by. Negas, T. and Ling, H., (Ceramic Transactions 53, Am. Ceram. Soc, Westerville, Ohio USA 1995), p. 179–96.
11 Itoh, T. and Rudokas, R., IEEE Trans. on Microwave Theory and Tech MTT–25 [1], p. 5259(1977).
12 Ubic, R., Reaney, I.M., and Lee, W.E., to be published.
13 Matveeva, R.G., Varfolomeev, M.B., and Il'yushenko, L.S., Russ. J. Inorg. Chem. 29 [1], p. 1719(1984).
14 Reaney, I.M., Colla, E.L., and Setter, N., Jap. J. Appl. Phys., Part 1 33 [7], p. 39843990 (1994).

Effect of Divalent Dopants on Properties of Ba3.75Nd9.5Ti18O54 Microwave Dielectric Resonators

  • R. Ubic (a1), I. M. Reaney (a1), W. E. Lee (a1), J. Samuels (a2) and E. Evangelinost (a2)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed