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Digitale Medien

Transmission electron microscopy study of defects in Sn-doped GaAs films grown by molecular beam epitaxy (1987)

Chen, S. H. ; Carter, C. B. ; Enquist, P.

Springer

Applied physics 44 (1987), S. 143-151

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ISSN: 1432-0630

Schlagwort(e): 68.55Jh ; 81.30Fb ; 68.35

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract Films of GaAs, heavily doped with Sn, which have been grown by molecular-beam epitaxy are found to contain single-crystal Sn particles situated in the nearsurface region of the epilayer GaAs. The morphology and chemical composition of the particles have been examined by using cross-section transmission electron microscopy combined with energy-dispersive x-ray spectroscopy. Different growth conditions were used to study the Sn-particle formation and high-resolution transmission electron microscopy was used to investigate microstructures. The observations are discussed in terms of several models previously proposed for these phenomena.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00626415

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Digitale Medien

On the Galerkin vector and the Eshelby solution in linear elasticity (1996)

Chen, S. J. ; Howitt, D. G.

Springer

Journal of elasticity 44 (1996), S. 1-8

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ISSN: 1573-2681

Schlagwort(e): 73B04 ; 73C02 ; anisotropic elasticity ; Galerkin vector ; displacement potential

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract Displacement potentials in linear static elasticity consist of three functions which can be regarded as the three components of a vector, e.g., the Galerkin vector. This research note gives an explanation as to why the biharmonic equations govern these functions in isotropic elasticity as opposed to the sixth-order partial differential equations that govern them in anisotropic elasticity. This note also shows that the Eshelby solution in two-dimensional anisotropic elasticity can be derived from the method of displacement potentials.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00042189

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