Title :
Microwave dielectric properties of (Li1/2Nd1/2)TiO3-(Na1/2Ln 1/2)TiO3 (Ln=La,Nd,Sm) ceramic system
Author :
Ichinose, N. ; Chida, N.
Author_Institution :
Sch. of Sci. & Eng., Waseda Univ., Tokyo, Japan
Abstract :
We have investigated the microwave dielectric properties of the (1-x)(Li1/2Nd1/2)TiO3-x(Na1/2 Ln1/2)TiO3 (Ln=La,Nd,Sm), both of which have a perovskite structure. The dielectric constant εr shows nonlinear behaviour and takes a maximum value at around x=0.4 for every Ln. However, the temperature coefficient τf of resonant frequency changes from negative to positive as a function of x. In the case of Ln=Sm, excellent dielectric properties of εr=115, Q·f=3800 GHz and τf=15 ppm/C at around x=0.3
Keywords :
ceramics; lanthanum compounds; lithium compounds; neodymium compounds; permittivity; samarium compounds; sodium compounds; LiNdTiO3-NaLaTiO3; LiNdTiO3-NaNdTiO3; LiNdTiO3-NaSmTiO3; ceramic; dielectric constant; microwave dielectric properties; perovskite structure; resonant frequency temperature coefficient; Ceramics; Dielectric constant; Dielectric materials; Erbium; Neodymium; Powders; Resonant frequency; Stability; Temperature; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786744
