Abstract
Using a unique combination of in situ electrical and acoustical measurements and ex situ transmission electron microscopy, the phase transformations of silicon during point loading were shown to exhibit a strong dependence on the size of the deformed volume. For nanometer-size volumes of silicon, the final phase was the body centered cubic structure BC8, but for larger volumes it was amorphous. The size dependence was explained by considering how shear stress fields vary with contact size and how interfacial effects between the silicon substrate and the BC8 phase determine its stability. For both small and large contacts the presence of a nonmetallic phase (assumed to be the Rhombohedral structure R8) was observed.
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M.C. Gupta and A.L. Ruoff, J. Appl. Phys. 51, 1072 (1980).
H. Olijnyk, S.K. Sikka, and W.B. Holzapfel, Phys. Lett. 103A, 137 (1984).
K.J. Chang and M.L. Cohen, Phys. Rev. B 31, 7819 (1985).
J.Z. Hu, L.D. Merkle, C.S. Menoni, and I.L. Spain, Phys. Rev. B. 34, 4679 (1986).
R. Biswas, R.M. Martin, R.J. Needs, and O.H. Nielsen, Phys. Rev. B 35, 9559 (1987).
J. Crain, G.J. Ackland, and S.J. Clark, Rep. Prog. Phys. 58, 705 (1995).
H. Minomura and H.G. Drickamer, J. Phys. Chem. Solids 23, 451 (1962).
R.H. Wentorf, Jr., and J.S. Kasper, Science 139, 338 (1963).
J.C. Jamieson, Science 139, 762 (1963).
F.P. Bundy, J. Chem. Phys. 41, 3809 (1964).
D.R. Clarke, M.C. Kroll, P.D. Kirchner, R.F. Cook, and B.J. Hockey, Phys. Rev. Lett. 21, 2156 (1988).
G.M. Pharr, W.C. Oliver, and D.S. Harding, J. Mater. Res. 6, 1129 (1991).
T.F. Page, W.C. Oliver, and C.J. McHargue, J. Mater. Res. 7, 450 (1992).
J.J. Gilman, J. Mater. Res. 7, 535 (1992).
G.M. Pharr, W.C. Oliver, R.F. Cook, P.D. Kirchner, M.C. Kroll, T.R. Dinger, and D.R. Clarke, J. Mater. Res. 7, 961 (1992).
D.L. Callahan and J.C. Morris, J. Mater. Res. 7, 1614 (1992).
E.R. Weppelmann, J.S. Field, and M.V. Swain, J. Mater. Res. 8, 830 (1993).
S.V. Hainsworth, A.J. Whitehead, and T.F. Page, Plastic Deformation of Ceramics, edited by R.C. Bradt, C.A. Brooks, and J.L. Routbort (Plenum Press, New York, 1995), p. 173.
A. Kailer, Y.G. Gogotsi, and K.G. Nickel, J. Appl. Phys. 81, 3057 (1997).
T.P. Weihs, C.W. Lawrence, B. Derby, C.B. Scruby, and J.B. Pethica, in Thin Films: Stresses and Mechanical Properties III, edited by W.D. Nix, J.C. Bravman, E. Arzt, and L.B. Freund (Mater. Res. Symp. Proc. 239, Pittsburgh, PA, 1992), p. 361.
S. Jeffrey, C.J. Sofield, and J.B. Pethica, Appl. Phys. Lett. 73, 172 (1998).
R.O. Piltz, J.R. Maclean, S.J. Clark, G.J. Ackland, P.D. Hatton, and J. Crain, Phys. Rev. B 52, 4072 (1995).
B.G. Pfrommer, M. Côté, S.G. Louie, and M.L. Cohen, Phys. Rev. B 56, 6662 (1997).
K.L. Johnson, Contact Mechanics (Cambridge University Press, New York, 1985).
S.H. Tolbert, A.B. Herhold, L.E. Brus, and A.P. Alivisatos, Phys. Rev. Lett. 76, 4384 (1996).
L. Delaey, Mater. Sci. Technol. 5, 340 (1991).
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Mann, A.B., van Heerden, D., Pethica, J.B. et al. Size-dependent phase transformations during point loading of silicon. Journal of Materials Research 15, 1754–1758 (2000). https://doi.org/10.1557/JMR.2000.0253
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DOI: https://doi.org/10.1557/JMR.2000.0253