Startseite Indentation response of single-crystalline GaAs in the nano-, micro-, and macroregime
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Indentation response of single-crystalline GaAs in the nano-, micro-, and macroregime

  • Frank Bergner , Michael Schaper , Ralf Hammer , Manfred Jurisch , Andre Kleinwechter und Thomas Chudoba
Veröffentlicht/Copyright: 23. Mai 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 98 Heft 8

Abstract

Fabrication, handling and processing of wafers of intrinsically brittle and anisotropic single-crystalline GaAs require a high level of control of the material's response to different loading conditions. The present work is focused on the response to hardness indentation. A short overview on the behaviour of (100) GaAs wafers in several doping conditions over a wide range of indentation loads from nano-indentation up to macro-indentation including sharp and blunt indenters is given. Special attention is paid to the pop-in effect in depth-sensing nano-indentation, to the anisotropy of indentation-induced radial crack formation and to the material's crack resistance obtained from the indentation fracture mechanics approach. We have observed that, under certain conditions, the frequency of formation of radial cracks is essentially different for the two in-plane <110> directions. This observation is attributed to the occurrence of two different kinds of dislocations and to the lack of inversion symmetry. The effect turns out to be closely related to a left – right asymmetry in the material removal caused by wire sawing. This insight has paved the way to the optimisation of the process of wire sawing of GaAs single crystals.

Keywords: GaAs; Nano-indentation; Cracking; Indentation fracture toughness; Doping effects
* Correspondence address, Prof. Dr. Michael K. Schaper Institute of Materials Science Dresden University of Technology D-01062 Dresden, Germany Tel.: +49 351 463 33332 Fax: +49 351 463 33207 E-mail:

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Received: 2007-3-26
Accepted: 2007-6-3
Published Online: 2013-05-23
Published in Print: 2007-08-01

© 2007, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. In-situ measurement of local strain partitioning in a commercial dual-phase steel
  7. Threshold strength and residual stress analysis of zirconia–alumina laminates
  8. Threshold strength prediction for laminar ceramics from bifurcated crack path simulation
  9. First observation of a hexagonal close packed metastable intermetallic phase between Cu and Al bilayer films
  10. Electric-field induced phase transition in a near-surface layer of a PbMg0.33Nb0.67O3-28% PbTiO3 (001) single-crystalline plate
  11. Modelling the onset of oxide formation on metal surfaces from first principles
  12. Applied
  13. Delamination of stiff islands patterned on stretchable substrates
  14. Crack formation in surface layers with strain gradients
  15. Theta-like specimens for measuring mechanical properties at the small-scale: effects of non-ideal loading
  16. Indentation response of single-crystalline GaAs in the nano-, micro-, and macroregime
  17. Self-assembly of high-performance multi-tube carbon nanotube field-effect transistors by ac dielectrophoresis
  18. Biphasic, but monolithic scaffolds for the therapy of osteochondral defects
  19. Review
  20. Recent advances in piezospectroscopy
  21. Notifications
  22. DGM News
https://doi.org/10.3139/146.101531
Schlagwörter für diesen Artikel
GaAs; Nano-indentation; Cracking; Indentation fracture toughness; Doping effects

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. In-situ measurement of local strain partitioning in a commercial dual-phase steel
  7. Threshold strength and residual stress analysis of zirconia–alumina laminates
  8. Threshold strength prediction for laminar ceramics from bifurcated crack path simulation
  9. First observation of a hexagonal close packed metastable intermetallic phase between Cu and Al bilayer films
  10. Electric-field induced phase transition in a near-surface layer of a PbMg0.33Nb0.67O3-28% PbTiO3 (001) single-crystalline plate
  11. Modelling the onset of oxide formation on metal surfaces from first principles
  12. Applied
  13. Delamination of stiff islands patterned on stretchable substrates
  14. Crack formation in surface layers with strain gradients
  15. Theta-like specimens for measuring mechanical properties at the small-scale: effects of non-ideal loading
  16. Indentation response of single-crystalline GaAs in the nano-, micro-, and macroregime
  17. Self-assembly of high-performance multi-tube carbon nanotube field-effect transistors by ac dielectrophoresis
  18. Biphasic, but monolithic scaffolds for the therapy of osteochondral defects
  19. Review
  20. Recent advances in piezospectroscopy
  21. Notifications
  22. DGM News
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