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Number of results
2011 | 120 | 5 | 902-904
Article title

Poisson Ratio and Biaxial Relaxation Coefficient in In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N Alloys

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EN
Abstracts
EN
We present theoretical results showing dependence of Poisson ratio and biaxial relaxation coefficient on composition and atomic arrangement in wurtzite In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N alloys. Our calculations reveal that the Poisson ratio determined for In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N alloys subjected to a uniaxial stress parallel to the c axis of the wurtzite structure shows significant superlinear dependence on composition. The superlinear bowing in Poisson ratio is enlarged by the effect of In clustering. The biaxial relaxation coefficient determined for In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N alloys subjected to a biaxial stress in the plane perpendicular to the c axis of the wurtzite structure changes superlinearly and linearly with x in In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N, respectively. The effect of In atom clustering results in sublinear dependence of the biaxial relaxation coefficient in both In_{x}Ga_{1-x}N and In_{x}Al_{1-x}N alloys.
Keywords
EN
Contributors
author
  • Institute of High Pressure Physics - Unipress, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
author
  • Institute of High Pressure Physics - Unipress, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland
References
  • 1. I. Gorczyca, S.P. Łepkowski, T. Suski, N.E. Christensen, A. Svane, Phys. Rev. B 80, 075202 (2009)
  • 2. J.A. Chan, J.Z. Liu, A. Zunger, Phys. Rev. B 82, 045112 (2010)
  • 3. I. Gorczyca, A. Kamińska, G. Staszczak, R. Czernecki, S.P. Łepkowski, T. Suski, H.P.D. Schenk, M. Glauser, R. Butté, J.-F. Carlin, E. Feltin, N. Grandjean, N.E. Christensen, A. Svane, Phys. Rev. B 81, 235206 (2010)
  • 4. D. Watson-Parris, M.J. Godfrey, P. Dawson, R.A. Oliver, M.J. Galtrey, M.J. Kappers, C.J. Humphreys, Phys. Rev. B 83, 115321 (2011)
  • 5. S.P. Łepkowski, I. Gorczyca, Phys. Rev. B 83, 203201 (2011)
  • 6. J.-M. Wagner, F. Bechstedt, Phys. Rev. B 66, 115202 (2002)
  • 7. M.A. Moran, Z.H. Barber, C.J. Humphreys, J. Appl. Phys. 102, 023505 (2007)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv120n523kz
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