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Digitale Medien

Kinetics of Ni2Si growth from pure Ni and Ni(V) films on (111) and (100) Si (1987)

Harith, M. A. ; Zhang, J. P. ; Campisano, S. U. ; [weitere]

Springer

Applied physics 42 (1987), S. 35-39

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Details

ISSN: 1432-0630

Schlagwort(e): 61.10 ; 68.55 ; 81.10

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract The kinetics of Ni2Si growth from pure Ni and from Ni0.93V0.07 films on (111) and (100) silicon has been studied by the combination of He+ backscattering, x-ray diffraction, Auger electron spectroscopy (AES) and transmission electron microscopy (TEM) techniques. The activation energies are 1.5 and 1.0 eV for pure Ni and Ni(V) films, respectively while the pre-exponential factors in Ni(V) are 4–5 orders of magnitude smaller than in the pure Ni case. The variations in the measured rates are related to the different grain size of the growing suicide layers. The vanadium is rejected from the silicide layer and piles up at the metalsilicide interface.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00618156

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Digitale Medien

High-resolution electron microscopy of high-temperature superconductors (1988)

Marks, L. D. ; Li, D. J. ; Shibahara, H. ; [weitere]

New York, NY : Wiley-Blackwell

Journal of Electron Microscopy Technique 8 (1988), S. 297-306

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ISSN: 0741-0581

Schlagwort(e): Defects ; Polymorphs ; Structure ; Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Allgemeine Naturwissenschaft

Notizen: We review recent results obtained at Northwestern using high-resolution electron microscopy to study high-temperature superconductors. While in general these materials form large, very perfect single crystal grains which display very few imperfections, there is also evidence of slip defects, amorphous regions, and order-disorder transformations. We also report that the gadolinium-based superconductors and in one case yttrium-based superconductors show evidence for some copper solid solubility in the form of copperrich planar defects. The structure of a metastable trigonal polytype is also reported, as are the effects of electron beam and water vapor damage to the materials.

Zusätzliches Material: 9 Ill.