Ionic migrations in crystalline solids

IV ABSTRACT In this study, the diffusion which has a big importance in the new technology has been considered and in a crystal which include diffusible ions. It has been suggested to develope a new technique for determining diffusion coefficient of diffusing ions under the influence of a driving force such as an electric field. The study has a simple introduction to explain the importance of diffusion. In Chapter Two, point defects, the formations and motions of point defects in a crystal, defect motion mechanisms, Fick's equations, atomic and continuum approaches to explain the diffusion, and the term of driving force in the event of diffusion have been considered. In Chapter Three, some informations are given about the kinds of diffusion coefficients, the methods to measure the diffusion coeffcient and some terms about the diffusion in the literature. In Chapter Four, it is given place to the numerical calculations to develop a new technique for determining diffusion coefficient which is the aim of this study.