Simulation study of grain growth in layered materials Application to YBa2Cu3O7-? ceramics
- 1 July 1994
- journal article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 70 (1) , 141-150
- https://doi.org/10.1080/01418639408240202
Abstract
We propose a simple lattice model which takes into account the anisotropy of grain formation energy to study the grain growth of layered materials such as polycrystalline superconducting cuprates. The anisotropic parameter in this model is estimated in the case of YBa2Cu3O7-δvia a semi-empirical theory for surface energy anisotropy. Monte Car10 simulation shows that the anisotropy of grain formation energy causes abnormal grain growth in which large elongated grains grow at the expense of fine matrix grains. The evolution with time of parameters characterizing the grain sizes and shapes have been calculated. In general, the results agree very well with experimental observation.Keywords
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