BOUNDARY-BOUNDARY INTERACTIONS AND THE ORIGIN OF SIC POLYTYPES

被引：19

作者：

CHENG, C

HEINE, V

NEEDS, RJ

机构：

来源：

EUROPHYSICS LETTERS | 1990年 / 12卷 / 01期

关键词：

D O I：

10.1209/0295-5075/12/1/013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Polytypes consist of regular stacking sequences between two types of layer. Can They be equilibrium phases as against metastable growth structures? The free energy involves the interaction between the boundaries where the stacking changes from one type of layer to the other. The boundary-boundary interaction arising from the phonons is found to be the strongest One in Sic, and tends to stabilize the polytypes as equilibrium structures. The polytype (23) of medium repeat length is found stable over a surprisingly wide temperature range of 200 K. © 1990 IOP Publishing Ltd.

引用

页码：69 / 74

页数：6

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