TY - JOUR
T1 - Effect of divalent dopants on properties of Ba3.75Nd9.5Ti18O54 microwave dielectric resonators
AU - Ubic, R.
AU - Reaney, I. M.
AU - Lee, W. E.
AU - Samuels, J.
AU - Evangelinos, E.
PY - 1997
Y1 - 1997
N2 - 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≈+60 ppm/°C at microwave frequencies. Similar ceramics with Ca, Sr, and Pb partially substituted for Ba were also processed and analyzed. 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 +8 ppm/°C, tunable with Pb content, strongly suggesting that these materials may be useful for commercial applications.
AB - 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≈+60 ppm/°C at microwave frequencies. Similar ceramics with Ca, Sr, and Pb partially substituted for Ba were also processed and analyzed. 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 +8 ppm/°C, tunable with Pb content, strongly suggesting that these materials may be useful for commercial applications.
UR - http://www.scopus.com/inward/record.url?scp=0030712755&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:0030712755
SN - 0272-9172
VL - 453
SP - 495
EP - 500
JO - Materials Research Society Symposium Proceedings
JF - Materials Research Society Symposium Proceedings
T2 - Proceedings of the 1996 MRS Fall Symposium
Y2 - 2 December 1996 through 5 December 1996
ER -