Thin film is a layer of material ranging from fraction of a nanometer to several micrometers in thickness .The term “thin films” is widely used in science and technology, can be defined as a layer of gaseous ,liquid or solid state of matter, their thickness is generally in few Å (10-10m) range. They have large surface to volume ratio and so the surface play an important role in determining the film properties. Mathematically it can be defined as a homogenous solid material contained between two parallel planes and extended in two directions (say X and Y). But restricted along z direction. The dimension along z direction is film thickness. The field of material science and technology and engineering community’s ability to conceive the novel materials with extraordinary combination of chemical, physical and mechanical properties has changed in modern society. There is an increasing technology progress. Modern technology requires thin films for different applications. Thin films technology is the basic of astounding development in solid state in electronics. The usefulness of the optical properties of films, and scientific curiosity about the behavior of two- dimension solids has been responsible for the immense interest in the science and technology of the films. Thin film studies have directly or indirectly advanced many new areas of research in solid state physics and chemistry which or based on phenomena uniquely characteristic of the thickness, geometry, and structure of the film [1].