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Title: Dispersion of acoustic-like and optic-like vibrational excitations in Ni{sub 2}B metallic glass

Abstract

The dynamic structure factor S(Q, E) of Ni{sub 2}B metallic glass was studied by inelastic neutron scattering in the ranges of momentum transfers 0.7 < {Dirac_h}Q/A{sup -1} < 7, and energy, 2 < E/meV < 70, transfers. The measurements were performed with the IN4 spectrometer (Institut Laue-Langevin (ILL), Grenoble, France) on three samples of the same chemical composition but with different contents of Ni and B isotopes, as a result of which partial contributions were determined. The cuts through S(Q, E) for different values of E and Q demonstrated a characteristic behavior indicating that vibrational excitations, similar to acoustic and optical phonon excitations in crystals, propagate in an amorphous medium in a certain energy and momentum range.

Authors:
;  [1];  [2];  [3];  [4]
  1. State Technical University for Nuclear Power Engineering (Russian Federation)
  2. Russian Research Centre 'Kurchatov Institute' (Russian Federation)
  3. Institut Laue-Langevin (France)
  4. University of New South Wales (Australia)
Publication Date:
OSTI Identifier:
21090912
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 52; Journal Issue: 3; Other Information: DOI: 10.1134/S1063774507030236; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON ISOTOPES; CHEMICAL COMPOSITION; CRYSTALS; EXCITATION; INELASTIC SCATTERING; METALLIC GLASSES; MOMENTUM TRANSFER; NEUTRON DIFFRACTION; NEUTRON REACTIONS; NICKEL BORIDES; NICKEL ISOTOPES; SPECTROMETERS; STRUCTURE FACTORS

Citation Formats

Klimenko, N. A., E-mail: KlimenkoNadya@obninsk.ru, Lisichkin, Yu. V., Syrykh, G. F., Ivanov, A. S., and Stride, J. A. Dispersion of acoustic-like and optic-like vibrational excitations in Ni{sub 2}B metallic glass. United States: N. p., 2007. Web. doi:10.1134/S1063774507030236.
Klimenko, N. A., E-mail: KlimenkoNadya@obninsk.ru, Lisichkin, Yu. V., Syrykh, G. F., Ivanov, A. S., & Stride, J. A. Dispersion of acoustic-like and optic-like vibrational excitations in Ni{sub 2}B metallic glass. United States. doi:10.1134/S1063774507030236.
Klimenko, N. A., E-mail: KlimenkoNadya@obninsk.ru, Lisichkin, Yu. V., Syrykh, G. F., Ivanov, A. S., and Stride, J. A. Tue . "Dispersion of acoustic-like and optic-like vibrational excitations in Ni{sub 2}B metallic glass". United States. doi:10.1134/S1063774507030236.
@article{osti_21090912,
title = {Dispersion of acoustic-like and optic-like vibrational excitations in Ni{sub 2}B metallic glass},
author = {Klimenko, N. A., E-mail: KlimenkoNadya@obninsk.ru and Lisichkin, Yu. V. and Syrykh, G. F. and Ivanov, A. S. and Stride, J. A.},
abstractNote = {The dynamic structure factor S(Q, E) of Ni{sub 2}B metallic glass was studied by inelastic neutron scattering in the ranges of momentum transfers 0.7 < {Dirac_h}Q/A{sup -1} < 7, and energy, 2 < E/meV < 70, transfers. The measurements were performed with the IN4 spectrometer (Institut Laue-Langevin (ILL), Grenoble, France) on three samples of the same chemical composition but with different contents of Ni and B isotopes, as a result of which partial contributions were determined. The cuts through S(Q, E) for different values of E and Q demonstrated a characteristic behavior indicating that vibrational excitations, similar to acoustic and optical phonon excitations in crystals, propagate in an amorphous medium in a certain energy and momentum range.},
doi = {10.1134/S1063774507030236},
journal = {Crystallography Reports},
number = 3,
volume = 52,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}