Temperature dependence of the normal vibrational modes of hcp Zr

1978 ◽  
Vol 18 (6) ◽  
pp. 2632-2642 ◽  
Author(s):  
C. Stassis ◽  
J. Zarestky ◽  
D. Arch ◽  
O. D. McMasters ◽  
B. N. Harmon
Keyword(s):  
Temperature Dependence ◽  
Vibrational Modes ◽  
Normal Vibrational Modes

Force constants and normal vibrational modes of a simplified molecular model of methyl thionitrite

1963 ◽  
Vol 11 (1-6) ◽  
pp. 331-339 ◽  
Author(s):  
Roger J. Philippe ◽  
John M. Ruth
Keyword(s):  
Molecular Model ◽  
Force Constants ◽  
Vibrational Modes ◽  
Normal Vibrational Modes

Temperature dependence of the vibrational modes of MoO3

1996 ◽  
Vol 38 (1-2) ◽  
pp. 65-71 ◽  
Author(s):  
C. Julien ◽  
B. Yebka ◽  
G.A. Nazri
Keyword(s):  
Temperature Dependence ◽  
Vibrational Modes

Vibrational Total Energy Distributions in Terms of Symmetry Coordinates, Forces and Momenta

1980 ◽  
Vol 35 (4) ◽  
pp. 464-465
Author(s):  
Alain J. P. Alix ◽  
Erling Rytter
Keyword(s):  
Total Energy ◽  
Polyatomic Molecules ◽  
Vibrational Modes ◽  
Energy Distributions ◽  
Symmetry Coordinates ◽  
Generalized Symmetry ◽  
Normal Vibrational Modes

Abstract The fundamental definitions of the Total Energy and of the Vibrational Total Energy Distributions are presented in details in terms of either symmetry coordinates, or generalised symmetry forces, or generalized symmetry coordinates. This, give now a uniform tool for physicists and chemists in the field of characterisation of the normal vibrational modes of polyatomic molecules.

Anharmonicity in silicate crystals: Temperature dependence of Au type vibrational modes in ZrSiO4 and LiAlSi2O6

1973 ◽  
Vol 34 (11) ◽  
pp. 1785-1796 ◽  
Author(s):  
F. Gervais ◽  
B. Piriou ◽  
F. Cabannes
Keyword(s):  
Temperature Dependence ◽  
Vibrational Modes

Energy distributions of neutrons scattered from solid C60 by the beryllium detector method

1995 ◽  
Vol 73 (11-12) ◽  
pp. 763-771 ◽  
Author(s):  
J.R. D. Copley ◽  
D. A. Neumann ◽  
W. A. Kamitakahara
Keyword(s):  
Energy Range ◽  
First Principles ◽  
Spectroscopic Data ◽  
Vibrational Modes ◽  
First Principles Calculations ◽  
Energy Distributions ◽  
Gaussian Functions ◽  
Detector Method ◽  
Normal Vibrational Modes ◽  
Rich Spectrum

We measured the energy distribution of neutrons scattered from polycrystalline C60, using a high-resolution filter-analyzer spectrometer. In the energy range 30–90 meV (242–726 cm−1) we observed a rich spectrum that we fitted to a sum of 15 Gaussian functions, each of which is assigned to one or a set of several degenerate normal vibrational modes of the C60 molecule. We also observed two broad features in the energy range from 90–130 meV (726–1049 cm−1). Our results are generally in excellent agreement with published spectroscopic data. Detailed comparisons with the results of several first-principles calculations suggest that present-day theories can predict the internal vibrational frequencies of C60 rather well, at least in the 30–90 meV range of energies.

Anomalous temperature dependence of the electric field gradient at the Y site inIn0.1Y0.9Ba2Cu3O9−δ: Evidence for soft vibrational modes

1988 ◽  
Vol 38 (4) ◽  
pp. 2824-2827 ◽  
Author(s):  
Gary L. Catchen ◽  
Michael Blaszkiewicz ◽  
Anthony J. Baratta ◽  
Wayne Huebner
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Temperature Dependence ◽  
Field Gradient ◽  
Vibrational Modes ◽  
Anomalous Temperature Dependence ◽  
Anomalous Temperature

Normal vibrational modes in benzil crystals

2002 ◽  
Vol 44 (2) ◽  
pp. 373-378 ◽  
Author(s):  
M. A. Ivanov ◽  
V. A. Kimasov ◽  
Yu. F. Markov
Keyword(s):  
Vibrational Modes ◽  
Normal Vibrational Modes

Low-frequency vibrational modes and temperature dependence of NQR frequencies in 1,2,4,5-tetrabromobenzene

1984 ◽  
Vol 22 (1) ◽  
pp. 1-5 ◽  
Author(s):  
N. Bharateswara Rao ◽  
M. Rangacharyulu ◽  
P. Venkatacharyulu ◽  
D. Premaswarup
Keyword(s):  
Temperature Dependence ◽  
Low Frequency ◽  
Vibrational Modes

Potential scans and potential energy distributions of normal vibrational modes of trichloroacetyl isocyanate

2002 ◽  
Vol 8 (2) ◽  
pp. 44-49 ◽  
Author(s):  
Hassan M. Badawi ◽  
Wolfgang Förner ◽  
Basel F. Abu-Sharkh ◽  
Yahya S. Oloriegbe
Keyword(s):  
Potential Energy ◽  
Vibrational Modes ◽  
Energy Distributions ◽  
Trichloroacetyl Isocyanate ◽  
Normal Vibrational Modes
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