TITLE

Surface transformation and inversion domain boundaries in gallium nitride nanorods

AUTHOR(S)
Pan Xiao; Xu Wang; Jun Wang; Fujiu Ke; Min Zhou; Yilong Bai
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/23/2009, Vol. 95 Issue 21, p211907
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Phase transformation and subdomain structure in [0001]-oriented gallium nitride (GaN) nanorods of different sizes are studied using molecular dynamics simulations. The analysis concerns the structure of GaN nanorods at 300 K without external loading. Calculations show that a transformation from wurtzite to a tetragonal structure occurs along [formula] lateral surfaces, leading to the formation of a six-sided columnar inversion domain boundary (IDB) in the [0001] direction of the nanorods. This structural configuration is similar to the IDB structure observed experimentally in GaN epitaxial layers. The transformation is significantly dependent on the size of the nanorods.
ACCESSION #
45478098

 

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