Title :
Temperature dependence of dielectric properties of (BaSrMg)TiO3 ceramics
Author :
Kim, Beom-Jin ; Park, Tae-Gone ; Kim, Myoung-Ho
Author_Institution :
Chang-Won Univ., Kyoungnam, South Korea
Abstract :
The dielectric properties of several high dielectric-based ceramics (BaTiO3) were measured at different temperatures and frequencies. The preternary compound ceramics, (1-y-x)BaTiO3-ySrTiO3-xMgTiO3, were fabricated as ceramic capacitors by using the mixed oxide method. As the results of the electrical measurement of the specimens, the temperature coefficients of the capacitance were decreased and the curie temperature (Tc) were shifted downward in accordance with the increase of SrTiO3 and MgTiO3. BSM was found to act on this system as a depressor and a shifter at the same time. The dielectric constants were decreased as the frequency was in creased below 10 MHz. Under same conditions, especially in the case of BSM-11 which were sintered at 1,250°C for two hours, the dielectric properties were suitable for capacitor
Keywords :
barium compounds; ceramic capacitors; ferroelectric Curie temperature; magnesium compounds; permittivity; sintering; strontium compounds; (BaSrMg)TiO3; (BaSrMg)TiO3 ceramic; 10 MHz; 1250 C; BSM-11; Curie temperature; capacitance; capacitor; dielectric constant; dielectric properties; mixed oxide synthesis; sintering; temperature dependence; Barium; Capacitors; Ceramics; Dielectric constant; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Electric variables measurement; Frequency dependence; Temperature dependence;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.616605
