TY - JOUR
T1 - Synthesis and dielectric properties of Li 1-x+yTa 1-x-3yTi x+4yO 3 M-phase solid solutions
AU - Borisevich, Albina Y.
AU - Davies, Peter K.
PY - 2002/10
Y1 - 2002/10
N2 - The synthesis, structure, and dielectric properties of the so-called M-phase solid solutions in the Li 2O-Ta 2O 5-TiO 2 system were investigated. Although the range of stability of the tantalate phases is more limited compared with their niobate counterparts, they have identical structures based on intergrowths of LiTaO 3-type blocks separated by corundum type layers. The dielectric constants of the tantalate M-phases range from 68 to 52 and they all exhibit a negative temperature coefficient of capacitance. The temperature coefficient of the resonant frequency measured in the microwave region can be tuned to zero, and the system shows quite good quality factors with the highest value reaching a Q × f = 10500 at 6.7 GHz.
AB - The synthesis, structure, and dielectric properties of the so-called M-phase solid solutions in the Li 2O-Ta 2O 5-TiO 2 system were investigated. Although the range of stability of the tantalate phases is more limited compared with their niobate counterparts, they have identical structures based on intergrowths of LiTaO 3-type blocks separated by corundum type layers. The dielectric constants of the tantalate M-phases range from 68 to 52 and they all exhibit a negative temperature coefficient of capacitance. The temperature coefficient of the resonant frequency measured in the microwave region can be tuned to zero, and the system shows quite good quality factors with the highest value reaching a Q × f = 10500 at 6.7 GHz.
UR - http://www.scopus.com/inward/record.url?scp=0036805795&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.2002.tb00485.x
DO - 10.1111/j.1151-2916.2002.tb00485.x
M3 - Article
AN - SCOPUS:0036805795
SN - 0002-7820
VL - 85
SP - 2487
EP - 2491
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 10
ER -