Lecture

Diffusion Mechanisms in Solids

Description

This lecture covers the mechanisms of diffusion in solids, including simple, vacancy, and interstitial mechanisms, as well as cubic and non-cubic structures. It discusses topics such as the random movement theory, Matano's method, and atomic theory of diffusion. The lecture also explores examples of diffusion in cubic crystals and the calculation of diffusion coefficients. Additionally, it delves into interstitial diffusion in both face-centered cubic and cubic close-packed structures. The instructor presents the concept of mean square displacement, the correlation factor in diffusion, and the impact of correlated jumps on diffusion. The lecture concludes with a discussion on diffusion in crystalline solids and its importance in various applications.

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