Nb-Doped 0.8BaTiO3-0.2Bi(Mg0.5Ti0.5)O3 Ceramics with Stable Dielectric Properties at High Temperature
نویسندگان
چکیده
Nb-doped 0.8BaTiO3-0.2Bi(Mg0.5Ti0.5)O3 ceramics were prepared by conventional solid-state method. The dielectric properties and the structural properties were investigated. When Nb2O5 is doped into 0.8BT-0.2BMT system, a small amount of Ba4Ti12O27 secondary phase is formed. The lattice parameters gradually increase with the Nb2O5 doping. It is found that the temperature-capacitance characteristics greatly depend on Nb2O5 content. With the addition of 3.0 mol% Nb2O5, a 0.8BT-0.2BMT ceramic sample could satisfy the EIA X9R specification. This material is promising for high-temperature MLCC application.
منابع مشابه
Piezoelectric nonlinearity and frequency dispersion of the direct piezoelectric response of BiFeO3 ceramics
Related Articles Pressure and electric field effects on piezoelectric responses of KNbO3 J. Appl. Phys. 112, 064106 (2012) Structure and properties of La-modified Na0.5Bi0.5TiO3 at ambient and elevated temperatures J. Appl. Phys. 112, 054111 (2012) Modeling of dielectric and piezoelectric response of 1-3 type piezocomposites J. Appl. Phys. 112, 044107 (2012) Remarkably high-temperature stable p...
متن کاملEffect of V2O5 Doping on the Sintering and Dielectric Properties of M-Phase Li1+x-yNb1-x-3yTix+4yO3 Ceramics
The effect of the addition of V2O5 on the structure, sintering and dielectric properties of M-phase (Li1+xyNb1-x-3yTix+4y)O3 ceramics has been investigated. Homogeneous substitution of V5+ for Nb5+ was obtained in LiNb0.6(1-x) V0.6xTi0.5O3 for x ≤ 0.02. The addition of V2O5 led to a large reduction in the sintering temperature and samples with x = 0.02 could be fully densified at 900oC. The sub...
متن کاملEffect of Microwave Sintering on the Microstructure and Dielectric Properties of Bi2O3-Doped (Ba0.6Sr0.4)(Ti0.94Cu0.06)O3 Ceramics
The effects of microwave sintering on the sintering behaviour, microstructure and dielectric properties of Bi2O3doped (Ba0.6Sr0.4)(Ti0.94Cu0.06)O3 (BSTC) ceramics were investigated. The microstructure and dielectric properties of a BSTC ceramic were also studied given different amounts of Bi2O3 doping. Microwave heating with sintering temperatures below 1000 ̊C significantly improves the densifi...
متن کاملEFFECTS OF LANTHANUM DOPING ON THE ELECTRICAL PROPERTIES OF SOL-GEL DERIVED AND MECHANICALLY ACTIVATED Pb1.1- X LaX (Zr0.53Ti0.47) O3, NANO POWDERS
Abstract: The PZT-based ceramics with a composition of Pb1.1-xLax (Zr0.53Ti0.47)O3, were prepared by conventional mixed oxide followed by mechanical alloying and sol-gel methods in which x was chosen in the range of 0.02–0.06. The samples were calcined in the range of 450 °C - 750 °C for 4h. The physical and electrical properties of the samples were determined as a function of the calcinati...
متن کاملElectromechanical properties of fine-grain, 0.7 Pb(Mg(1/3)Nb(2/3))O3-0.3PbTiO3 ceramics.
A fine grain, relaxor-based piezoelectric ceramic 0.7 Pb(Mg(1/3)Nb(2/3))O3-0.3PbTiO3 (PMN-30% PT) has been investigated, which was fabricated using the columbite precursor method. The complete set of electromechanical properties of the piezoceramic at room temperature is determined using a combination of ultrasonic and resonance techniques. This fine-grain ceramic (grain size < or = 2.5 microm)...
متن کامل