Structure and dynamics of amorphous ZrBe alloys
| Autor: | G. F. Syrykh, A.M. Bratkovsky, A.V. Smirnov, N. A. Chernoplekov, S. L. Isakov, I.P. Sadikov, M. N. Hlopkin, S.N. Ishmaev |
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| Rok vydání: | 1993 |
| Předmět: |
Amorphous metal
Materials science Monte Carlo method Atom vibrations Electron Neutron scattering Condensed Matter Physics Molecular physics Spectral line Electronic Optical and Magnetic Materials Amorphous solid symbols.namesake Materials Chemistry Ceramics and Composites symbols Atomic physics Debye model |
| Zdroj: | Journal of Non-Crystalline Solids. :72-75 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/0022-3093(93)90132-h |
| Popis: | The extensive study of the short-range order structure, atomic vibration spectrum and electronic properties of amorphous alloys Zr1−cBec (c = 0.3-0.5) is performed using neutron scattering and specific heat measurements. An increase in the Be concentration in the amorphous alloy reduced the distances between nearest similar atoms, shifted and broadened the high-energy part of the vibrational spectrum, increased the Debye temperature and decreased the density of the electron states as well as the superconducting transition temperature. An analysis of the partial radial distributions, obtained by Monte Carlo modeling, indicated that the atomic structure of the amorphous ZrBe alloys was dominated by geometrical factors, such as the atom sizes and system composition. The density of the vibrational states calculated by the recursion method for the structural model with a large number of atoms reproduced well all the main features of the experimental spectra. |
| Databáze: | OpenAIRE |
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