Some Thoughts and/or Questions about Activation Energy and Pre-Exponential Factor |
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| Journal | Defect and Diffusion Forum (Volume 249) |
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| Volume | Diffusion in Solids - Past, Present and Future |
| Edited by | B.S. Bokstein and B.B. Straumal |
| Pages | 61-72 |
| DOI | 10.4028/www.scientific.net/DDF.249.61 |
| Citation | Jean Philibert, 2006, Defect and Diffusion Forum, 249, 61 |
| Online since | January, 2006 |
| Authors | Jean Philibert |
| Keywords | Activation Enthalpy, Activation Entropy, Arrhenius Law, Compensation Rule, Meyer-Neldel Rule, Reaction Rate |
| Abstract | The first part of this paper presents a brief historical account of the Arrhenius law, starting from the seminal paper by Arrhenius (1889) up to theoretical developments mainly based on the rate theory. The second part describes the so called compensation rule (Meyer-Neldel rule), a correlation between activation enthalpy and entropy (or between pre-exponential factor and activation energy) , and discusses whether this correlation is trivial or bears some physical meaning. |
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