2009/05/01 by Viktor Porokhonskyy, V. Porokhonskyy, Li Jin +2
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Atomic physics #Ceramic #Chemistry #Composite material #Condensed matter physics #Dielectric #Dielectric loss #Dispersion (optics) #Domain wall (magnetism) #Ferroelectric and Piezoelectric Materials #Ferroelectricity #Frequency dependence #Grain size #Materials science #Microwave Dielectric Ceramics Synthesis #Nuclear magnetic resonance #Optics #Optoelectronics #Physics #Piezoelectricity #Polarization (electrochemistry) #Poling #Resonance (particle physics) #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.3147166
8 pages, 3 figures
arxiv created 2009/05/01 · openalex publication_date 2009/05/25 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report on the experimental investigation of a high-frequency (1 MHz–1.8 GHz) dielectric dispersion in unpoled and poled Pb(Zr,Ti)O3 ceramics. Two overlapping loss peaks could be revealed in the dielectric spectrum. The linear dependence between the lower-frequency peak position and average grain size D¯, which holds for D¯≤10 μm, indicates that the corresponding polarization mechanism originates from piezoelectric resonances of grains. The intensity of the higher-frequency peak is drastically reduced by poling. It is thus proposed that this loss peak is related to domain wall contribution to the dielectric dispersion.