Effect of Divalent Dopants on the Properties of Ba3.75Nd9.5Ti18O54 Microwave Dielectric ResonatorsMRS Proceedings (1997)
Pellets in the ternary solid-solution Ba 6_3xNd8+2xTi18O 54 (x=0.75) have been processed to near theoretical density by mixed-oxide synthesis, and their dielectric properties determined to be Er,89, Qf>10,000, and tf-+60ppmf 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 Er to 100-105 but significantly lower Qf and inflate tf. While Pb substitution also lowered Qf, it had no significant effect on Er and beneficially suppressed tf to values from -16 to +8ppm/°C, tunable with Pb content, strongly suggesting that these materials may be useful for commercial applications.
Citation InformationRick Ubic, I. M. Reaney, W. E. Lee, J. Samuels, et al.. "Effect of Divalent Dopants on the Properties of Ba3.75Nd9.5Ti18O54 Microwave Dielectric Resonators" MRS Proceedings Vol. 453 (1997)
Available at: http://works.bepress.com/rick_ubic/42/