New Frontiers: Miniaturization and Higher Level BaTiO3 -Ceramics Microelectronics Circuits Integration

Abstract

Since that the scientific and technological efforts to further miniaturization, "better packaging" and higher levels of integration of electronic components and subsystems, and modern microelectronics devices are increasingly limited, the new field of scientific views and perspectives in previously presented scientific work, contribute and create new solutions of electronics and materials science higher unity with the goal to be recognized the desired functions and highly integrated electronic properties with in the different microstructures levels. In this study, in order to establish grain shapes of sintered ceramics, new approach on correlation between microstructure and properties of rare-earth doped BaTiO3 -ceramics based on fractal geometry, related to intergranular contact surfaces and mathematical statistics calculations has been developed. BaTiO3-ceramics doped with different additives (Mn, La, Er, Yb, Ho,) were prepared using conventional solid state procedure and sintered at 1320C. The microstructure of specimens was investigated by SEM-5300 and capacitance has been done using LCR-meter Agilent 4284A. By using fractal modeling method of microstructure configurations reconstruction, like shapes of grains or intergranular contacts has been successfully done. Furthermore, the area of grains surface was calculated using fractal correction that expresses the irregularity of grains surface through fractal dimension For better and deeper characterization of the ceramics material microstructure the Voronoi model, mathematical statistics calculations, microstructure analysis on vertical view od the fracture between two pieces of samples, and contact surfaces analysis between the particles and grains, are applied The presented results indicate that fractal method for analysis of the structure of ceramics provides a new approach for describing, predicting and modeling the grain shape and relations between the BaTiO3 -ceramic structure and dielectrical properties.