Recognition and Distribution of A(g) and B(g) Dislocations in Indentation Deformation Zones on {111} and {110} Surfaces of CdTe

✍ Scribed by Schreiber, J. ;Höring, L. ;Uniewski, H. ;Hildebrandt, S. ;Leipner, H. S.

• Book ID: 101312090
• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 280 KB
• Volume: 171
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/(sici)1521-396x(199901)171:1<89::aid-pssa89>3.0.co;2-d

✦ Synopsis

The distributions of polar dislocations appearing in surface and volume deformation zones of indentations on 111Cd, " 1 " 1 " 1Te and 110 surfaces of CdTe bulk crystals are studied. Distinct CL contrast properties proved in CdTe for A(g)-and B(g)-type dislocations are utilised to recognise Cd(g) and Te(g) dislocation segments in the deformation-induced defect configurations. The microscopic spatial glide geometries as caused by indenting the low-indexed surfaces are theoretically developed within the framework of an advanced h110i glide prism model. Comprehensive results gained by means of depth-resolved CL microscopy fully confirm the concept of 3D glide prism formation. The experimental findings give evidence for a coexistence of Cd(g) and Te(g) dislocations in tangential as well as tetrahedral deformation zones. From that, correlated propagation of polar dislocation segments during plastic flow has to be concluded.