Microwave dielectric properties of Ca[(Li1/3Nb2/3)1−xMx]O3−δ (M = Sn, Ti) ceramics
- 1 September 1999
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 14 (9) , 3567-3570
- https://doi.org/10.1557/jmr.1999.0483
Abstract
The microwave dielectric properties of Ca[(Li1/3Nb2/3)1−xMx]O3−δ (M = Sn, Ti, 0 ≤ x ≤ 0.5) ceramics were investigated. In general, the ceramics prepared were multiphase materials. However, single-phase specimens having orthorhombic perovskite structure similar to CaTiO3 could be obtained in the vicinity of Sn = 0.2 to 0.3, and Ti = 0.2. As Sn concentration increased, the dielectric constant (εr) decreased and the quality factor (Q) significantly increased within the limited Sn concentration. As Ti concentration increased, the dielectric constant (εr) increased, the quality factor (Q) decreased, and the temperature coefficient of resonant frequency (τf) changed from a negative to positive value. The temperature coefficient of resonant frequency of 0 ppm/°C was realized at Ti = 0.2. The Q · fo value and εr for this composition were found to be 26100 GHz and 38.6, respectively.Keywords
This publication has 7 references indexed in Scilit:
- Microwave Characteristics of (Pb,Ca)(Fe,Nb,Sn)O3 Dielectric MaterialsJournal of the American Ceramic Society, 1997
- Dielectric Properties of Pb-Based Perovskite Substituted by Ti for B-site at Microwave FrequenciesJapanese Journal of Applied Physics, 1993
- Recent development of dielectric resonator materials and filters in JapanFerroelectrics, 1989
- Microwave dielectric properties of (ZrSn)TiO4 ceramicMaterials Research Bulletin, 1988
- Ba2Ti9O20 as a Microwave Dielectric ResonatorJournal of the American Ceramic Society, 1975
- A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter RangeIEEE Transactions on Microwave Theory and Techniques, 1960
- Structure and properties of CaTiO3Acta Crystallographica, 1957