Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-23T09:14:07.483Z Has data issue: false hasContentIssue false
  • English
  • Français

Indentation-Induced Damage Mechanisms in Germanium

Published online by Cambridge University Press:  26 February 2011

David J Oliver ,
Jodie E Bradby ,
Jim S Williams ,
Michael V Swain ,
Damien McGrouther  and
Paul Munroe
David J Oliver
Affiliation:
[email protected], Australian National University, Electronic Materials Engineering, Canberra, ACT 0200, Canberrra, 0200, Australia
Jodie E Bradby
Affiliation:
[email protected], Australian National University, Electronic Materials Engineering, Canberra, ACT 0200, Canberrra, 0200, Australia
Jim S Williams
Affiliation:
[email protected], Australian National University, Electronic Materials Engineering, Canberra, ACT 0200, Canberrra, 0200, Australia
Michael V Swain
Affiliation:
[email protected], University of Sydney, Biomaterials Science Research Unit, Sydney, N/A, Australia
Damien McGrouther
Affiliation:
[email protected], University of New South Wales, Electron Microscope Unit, Sydney, 2052, Australia
Paul Munroe
Affiliation:
[email protected], University of New South Wales, Electron Microscope Unit, Sydney, 2052, Australia
Get access

Abstract

The response of crystalline Ge to indentation has been studied over a range of maximum loads. At a certain load, an unusual ‘giant pop-in’ event occurs, in which a discontinuous extension of >1 μm is observed in the force-displacement curve. In such cases, load release curves show a pronounced ‘elbowing’ response, leading to increased depth recovery. TEM and Raman microspectroscopy revealed the presence of amorphous material in the residual impression. To examine cracking, a sequence of cross-sections was milled through the indent and images taken using an automated method (the ‘slice-and-view’ method). Using 3-D reconstruction software, the data was segmented and reconstructed into a 3-dimensional representation of the cracks around the indent. Applying this technique to indents featuring a giant pop-in, it was deduced that the inelastic elbowing observed was a bending response of material detached by lateral cracking. The giant pop-in is attributable to material removal, caused by lateral cracks formed during loading.

Keywords

Gefractureion beam analysis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 983: Symposium LL – Focused Ion Beams for Analysis and Processing , 2006 , 0983-LL08-02
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Bradby, J. E., Williams, J. S., Wong-Leung, J., Swain, M. V., and Munroe, P., Appl. Phys. Lett. 80, 2651–2653 (2002).Google Scholar
2 Xiao, S. Q. and Pirouz, P., Journal of Materials Research 7, 1406–1412 (1992).Google Scholar
3 Kailer, A., Nickel, K. G., and Gogotsi, Y. G., J. Raman. Spectr. 30, 939–946 (1999).Google Scholar
4 Lemaitre, P., Journal of Materials Science Letters 7, 895–896 (1988).Google Scholar
5 Lawn, B. R., Hockey, B. J., and Wiederhorn, S. M., Journal of Materials Science 15, 1207–1223 (1980).Google Scholar
6 Bradby, J. E., Williams, J. S., Wong-Leung, J., Swain, M. V., and Munroe, P., Appl. Phys. Lett. 77, 3749–3751 (2000).Google Scholar
7 Clarke, D. R., Kroll, M. C., Kirchner, P. D., Cook, R. F., and Hockey, B. J., Phys. Rev. Lett. 60, 2156–2159 (1988).Google Scholar