|About this Abstract
||Materials Science & Technology 2011
||MS&T'11 Poster Session
||090 The Influence of Consolidation Parameters on Statistics Calculations Grain Contact Surfaces BaTiO3-Ceramics
||Vojislav V Mitic, Vesna Paunovic, Jelena Purenovic, Miroslav Miljkovic, Jelena Nedin
|On-Site Speaker (Planned)
||Vojislav V Mitic
The effects of rare-earth ions dopants on the microstructural characteristics of modified BaTiO3 were studied in this investigation. Microstructural and compositional studies were performed by SEM and EDS system. The dielectric characteristic as dielectric constant and dielectric loss have been done in the frequency range from 20Hz to 1MHz and temperature range from 20 to 180C. SEM images showed that in samples doped with a low level of rare-earth ions, the grain size ranged from 10-40m, while with the higher dopant concentration it is between 2-10m. Using fractal method a reconstruction of grains shapes and intergranular contacts has been successfully done. The area of grains surface was calculated using fractal correction that expresses the irregularity of grains surface through fractal dimension. The presented results indicate that, fractal method provides a new approach for describing, predicting and modeling the grain shape and relations between the BaTiO3-ceramic structure and dielectrical properties.