Transition in growth mode by competing strain relaxation mechanisms: Surfactant mediated epitaxy of SiGe alloys on Si

Kammler, M.; Hoegen, M. Horn-von
October 2004
Applied Physics Letters;10/11/2004, Vol. 85 Issue 15, p3056
Academic Journal
Surfactant mediated epitaxy of Si(1-x)Gex alloys on Si(111) can, besides technological importance, clarify the influence of the lattice mismatch during surfactant mediated heteroepitaxial growth. For low Ge concentration we find an immediate layer-by-layer growth, whereas at high Ge concentration a roughening transition followed by relaxation of the lattice mismatch in a periodic dislocation network is preferred. This behavior can be explained by comparing the dislocation nucleation rate on a smooth surface with the island nucleation rate on a pseudomorphic film.


Related Articles

  • Surfactant mediated growth of MnSi[sub 1.7] on Si(001). Teichert, S.; Hortenbach, H.; Hinneberg, H.-J. // Applied Physics Letters;4/2/2001, Vol. 78 Issue 14, p1988 

    Sb is used as a surfactant for the growth of MnSi[sub 1.7] by reactive deposition of Mn on Si(001). It is found that the presence of Sb during the growth strongly increases the island density and changes the crystalline orientation of the MnSi[sub 1.7]. The morphology and structure of the...

  • Effects of Yttrium on Cyclic Oxidation Resistance of Co-10Cr-5Si Alloy at 700 °C. Junhuai Xiang; Xianchao Xu; Lingyun Bai; Yunxiang Zheng; Huaishu Zhang // Applied Mechanics & Materials;2014, Issue 525, p154 

    The cyclic oxidation behavior of Co-10Cr-5Si alloys with and without Y in atmosphere at 700 °C was investigated. The addition of 0.3 at.% Y decreased the average parabolic rate constant from 4.39×10-10 g2cm-2s-1 to 3.42×10-10 g2cm-2s-1. The surface components with and without Y were...

  • Surface integrity effects on turned 6061 and 6061-T6 aluminum alloys. Toh, C.K.; Kanno, S. // Journal of Materials Science;May2004, Vol. 39 Issue 10, p3497 

    Discusses surface integrity effects on turned aluminum alloys. Improvement of toughness and resistance to fatigue crack growthby the application of heat treatment; Enhancement of mechanical properties such as high strength/weight ratio, good corrosion resistance, weldability and deformability;...

  • Boron as an anti-surfactant in sublimation growth of AlN single crystals. Albrecht, M.; Wollweber, J.; Rossberg, M.; Schmidbauer, M.; Hartmann, C.; Fornari, R. // Applied Physics Letters;5/22/2006, Vol. 88 Issue 21, p211904 

    We study the influence of B evaporating from BN crucible walls on the nucleation and growth of AlN by a physical vapor transport. An experimental analysis by means of electron microscopy and optical spectroscopy shows that B incorporation and surface segregation depends on the orientation of the...

  • A Comparative Study on Boiling Heat Transfer Enhancement for Some Metallic Alloys Used in Nuclear Applications. Khalifa, A. H.; El-Fawal, M. M.; Gadalla, A. A. // Nature & Science;Aug2011, Vol. 9 Issue 8, p244 

    In the present study, saturated nucleate pool boiling in aqueous surfactant solutions from horizontal tubes has been investigated. Sodium Dodecyl Sulfate (SDS) with different concentrations is the test surfactant. A pool boiling test rig has been designed and constructed to carry out heat...

  • Solid-phase crystallization of Si[sub 1-x]Ge[sub x] alloy layers. Yamaguchi, S.; Sugii, N.; Park, S. K.; Nakagawa, K.; Miyao, M. // Journal of Applied Physics;2/15/2001, Vol. 89 Issue 4, p2091 

    Solid-phase crystallization of Si[sub 1-x]Ge[sub x] (x=0-1.0) alloy layers deposited on a Si (100) substrate was investigated by ellipsometric spectroscopy. From a dispersion analysis of dielectric spectra, we deduced a crystallinity corresponding to the degree of average lattice alignment of...

  • Dendritic Growth in an Aluminum-Silicon Alloy. Kaya, H.; Çadırlı, E.; Gündüz, M. // Journal of Materials Engineering & Performance;Feb2007, Vol. 16 Issue 1, p12 

    Unidirectional solidification experiments have been carried out on an A1-3 wt.% Si alloy as a function of temperature gradient, G and growth rate, V. The samples were solidified under steady-state conditions with a constant growth rate of 8.20 µm/s at different temperature gradients...

  • Small-angle scattering from GP zones in Al-Cu alloy. Kashyap, K.; Koppad, Praveennath // Bulletin of Materials Science;2011, Vol. 34 Issue 7, p1455 

    It is well known that Guinier Preston (GP) zones form in Al-Cu alloys upon solutionizing and artificial aging, which are extensively used in commercial practice. It is well established that GP zones are discshaped precipitates, i.e. disks of clusters of copper atoms in the FCC aluminium matrix....

  • Nucleation and development of Goss texture and magnetic induction in thin-gauged 3% Si-Fe alloy. Heo, N.H.; Chai, K.H. // Journal of Applied Physics;4/15/1999 Part 2B of 2, Vol. 85 Issue 8, p6022 

    Focuses on a study on the nucleation and development of Goss texture in silicon-iron alloy strips. Experimental procedures; Results and discussion; Conclusions.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics