This work presents dielectric resonance in Pb͑Mg 1/3 Nb 2/3 ͒ 1−x Ti x O 3 crystals after electric ͑E͒-field poling, which is crucial for piezoelectric applications. Dielectric permittivity has been measured as functions of temperature, frequency, poling E-field strength, and Ti content ͑x = 25% and 34%͒. Frequency-dependent dielectric spectroscopy after poling exhibits multiple piezoelectric resonances between 0.2 and 1 MHz, and can be described by the forced-damped-oscillator model. The resonant spectra show significant changes while phase transitions are taking place.
Key words La (1-2x/3) Ba x (Mg 0.5 Sn 0.5 )O 3 , X-ray diffraction pattern, dielectric constant, quality factor, temperature coefficient of resonant frequency.This study examined the potential applications of microwave dielectric properties of La (1-2x/3) Ba x (Mg 0.5 Sn 0.5 )O 3 ceramics in rectenna. The La (1-2x/3) Ba x (Mg 0.5 Sn 0.5 )O 3 ceramics were prepared by the conventional solid-state method with various sintering temperatures. An apparent density of 6.62 g/cm 3 , a dielectric constant of 20.3, a quality factor of 51,700 GHz, and a temperature coefficient of resonant frequency of -78.2 ppm/K were obtained for La 2.98/3 Ba 0.01 (Mg 0.5 Sn 0.5 )O 3 ceramics that were sintered at 1550 °C for 4 h.
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