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Simulating Oxide Interfaces and Heterointerfaces

机译:模拟氧化物界面和异质界面

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摘要

Interfaces can be considered at a variety of length scales. All interfaces except grain boundaries are dielectric interfaces. In many cases, the geometric constraints of matching two lattices must be considered, together with the misfit strains that are often present. Continuum mechanics is useful for tackling such problems. In many cases, however, the local ordering of ions must also be considered. Atomistic simulation is therefore necessary, together with the problems associated with large length scales and long time scales. We discuss a number of examples to illustrate the issues involved and the compromises between different approaches that must be made.
机译:可以在各种长度范围内考虑接口。除晶界以外的所有界面都是介电界面。在许多情况下,必须考虑匹配两个晶格的几何约束以及经常出现的失配应变。连续力学对于解决此类问题很有用。但是,在许多情况下,还必须考虑离子的局部排序。因此,原子模拟以及与大长度标度和长时间标度相关的问题是必要的。我们讨论了许多示例来说明所涉及的问题以及必须采取的不同方法之间的折衷。

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