Chapter 7. Diffusion

  1. Richard J. D. Tilley

Published Online: 1 JUL 2005

DOI: 10.1002/0470020849.ch7

Understanding Solids: The Science of Materials

Understanding Solids: The Science of Materials

How to Cite

Tilley, R. J. D. (2004) Diffusion, in Understanding Solids: The Science of Materials, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/0470020849.ch7

Author Information

  1. Emeritus Professor, University of Cardiff, UK

Publication History

  1. Published Online: 1 JUL 2005
  2. Published Print: 27 JUL 2004

ISBN Information

Print ISBN: 9780470852750

Online ISBN: 9780470020845



  • diffusion;
  • tracer diffusion;
  • nonsteady-state diffusion;
  • Arrhenius equation;
  • ionic conductivity;
  • steady-state diffusion


This chapter contains sections titled:

  • Self-diffusion, tracer diffusion and tracer impurity diffusion

  • Nonsteady-state diffusion

  • Steady-state diffusion

  • Temperature variation of the diffusion coefficient

  • The effect of impurities

  • The penetration depth

  • Self-diffusion mechanisms

  • Atomic movement during diffusion

  • Atomic migration and diffusion coefficients

  • Self-diffusion in crystals

  • The Arrhenius equation and the effect of temperature

  • Correlation factors for self-diffusion

  • Ionic conductivity

  • The relationship between ionic conductivity and the diffusion coefficient

  • Answers to introductory questions

  • Further reading

  • Problems and exercises