Nanoscale anisotropic plastic deformation in single crystal GaN.
Nanoscale Res Lett
; 7: 150, 2012 Feb 22.
Article
in En
| MEDLINE
| ID: mdl-22353389
ABSTRACT
Elasto-plastic mechanical deformation behaviors of c-plane (0001) and nonpolar GaN single crystals are studied using nanoindentation, cathodoluminescence, and transmission electron microscopy. Nanoindentation tests show that c-plane GaN is less susceptible to plastic deformation and has higher hardness and Young's modulus than the nonpolar GaN. Cathodoluminescence and transmission electron microscopy characterizations of indent-induced plastic deformation reveal that there are two primary slip systems for the c-plane GaN, while there is only one most favorable slip system for the nonplane GaN. We suggest that the anisotropic elasto-plastic mechanical properties of GaN are relative to its anisotropic plastic deformation behavior.PACS 62.20.fq; 81.05.Ea; 61.72.Lk.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Nanoscale Res Lett
Year:
2012
Document type:
Article