Abstract
Na1/2Ln1/2)TiO3> ceramic has a high relative dielectric constant and a positive temperature coefficient of resonant frequency (τf) (where Ln represents a lanthanide: La+3, Pr+3, Nd+3 and Sm+3). On the other hand, MgTiO3 ceramic has a high Qf value and a negative temperature coefficient. We have investigated the microwave dielectric properties of MgTiO3-(1 − x)(Na1/2 Ln1/2) TiO3. In this system, there are no indications of a solid-solution or a secondary phase. There are mixed phases only with MgTiO3 and Na1/2 Ln1/2)TiO3 phases. Its dielectric characteristics (Q*f, temperature coefficient and dielectric constant) are intermediate between (Na1/2 Ln1/2) TiO3 and MgTiO3 and are predictable by the logarithmic mixing rule. The temperature coefficient of dielectric ceramic compositions approximates to zero at each Ln = La, x = 0.9, Ln = Pr, x = 0.87, and Ln = Nd, x = 0.84. At this time, there are Q*f values in the range of 55 000 to 28 000 GHz and relative dielectric constants in the range of 22 to 25.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
