H. Geisler
Dresden University of Technology
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Publication
Featured researches published by H. Geisler.
Philosophical Magazine | 1999
H. Geisler; K. O. Schweitz; J. Chevallier; J. B⊘ttiger; K. Samwer
Abstract The hardness of de-magnetron sputtered Ag/Ni multilayers with different modulation wavelengths Λ was measured by nanoindentation. A hardness enhancement of nearly 50% over the rule-of-mixtures value, calculated from the experimentally determined hardnesses of single Ag and Ni thin films, is observed. For small Λ values, the hardness increases with Λ and reaches a maximum at 10 nm, whereafter it decreases again. This behaviour agrees qualitatively with model calculations which have been developed to explain the hardness enhancement in multilayers composed of layers with different shear moduli and lattice parameters. Instabilities of the metastable multilayer structure such as amorphization or a break-up of the individual layers at very low modulation lengths (Λ≤4nm) are detected by the nanoindentation measurements. X-ray diffraction measurements were performed in order to investigate the correlation between structural parameters and hardness.
Applied Physics A | 1999
J. Noetzel; K. Brand; H. Geisler; A. Gorbunov; Alexander Tselev; E. Wieser; W. Möller
Applied Physics A | 1999
A. Gorbunov; Alexander Tselev; D. Elefant; H. Geisler; G. Henninger; A. Mensch; Dirk C. Meyer; B. Wolf; P. Paufler; Wolfgang Pompe; C.M. Schneider; Hartmut Worch
Materials Science-poland | 2007
L. Zhu; J. Atesang; P. Dudek; M. Hecker; J. Rinderknecht; Y. Ritz; H. Geisler; U. Herr; R. Geer; E. Zschech
Zeitschrift Fur Metallkunde | 1999
H. Geisler; A. Mensch; A. Gorbunov; Alexander Tselev; J. Noetzel; K. Brand; Hartmut Worch
Materials Science Forum | 2000
Alexander Tselev; A.I. Gorbunov; H. Geisler; A. Mensch; Dirk C. Meyer; Wolfgang Pompe
Journal of Metastable and Nanocrystalline Materials | 2000
H. Geisler; A. Mensch; Alexander Tselev; A.I. Gorbunov; Hartmut Worch
Materials Science Forum | 1998
J. Noetzel; H. Geisler; A.I. Gorbunov; Reiner Dietsch; Hermann Mai; A. Mensch; W. Möller; Wolfgang Pompe; H. Reuther; Alexander Tselev; E. Wieser; H. Worch
Journal of Metastable and Nanocrystalline Materials | 2000
K. Brand; J. Noetzel; H. Geisler; A. Mensch; A.I. Gorbunov; Hannes Lichte
Materials Science Forum | 1996
U. Herr; H. Geisler; K. Samwer
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