Form of frequency distribution function of dynamical modes in fullerite by unfolding the observed temperature dependent specific heat

1999 ◽  
Vol 112 (8) ◽  
pp. 419-422 ◽  
Author(s):  
S.P. Tewari ◽  
P. Silotia ◽  
K. Bera
Keyword(s):  
Distribution Function ◽  
Specific Heat ◽  
Frequency Distribution ◽  
Temperature Dependent ◽  
Frequency Distribution Function

Lattice Dynamics and Thermal Expansion of Ruthenium

1979 ◽  
Vol 34 (6) ◽  
pp. 724-730 ◽  
Author(s):  
R. Ramji Rao ◽  
J. V. S. S. Narayana Murthy
Keyword(s):  
Thermal Expansion ◽  
Distribution Function ◽  
Bulk Modulus ◽  
Specific Heat ◽  
Temperature Variation ◽  
Frequency Distribution ◽  
Lattice Dynamics ◽  
Pressure Variation ◽  
Frequency Distribution Function ◽  
Lattice Specific Heat

Abstract The lattice dynamics, lattice specific heat and thermal expansion of ruthenium are worked out using the model of Srinivasan and Ramji Rao, based on Keating’s approach. A total number of 50,880 frequencies has been used in constructing the frequency distribution function. The anharmonic parameters are obtained from the data of Clendenen and Drickamer on the pressure variation of the lattice parameters of ruthenium. The Anderson-Grüneisen parameter δ is calculated using the theoretical TOE constants, and the temperature variation of the bulk modulus is explained using Anderson’s theory.

TABLES OF DEBYE FUNCTIONS

1966 ◽  
Vol 44 (1) ◽  
pp. 45-56 ◽  
Author(s):  
Roger Howard ◽  
J. Grindlay
Keyword(s):  
Heat Capacity ◽  
Distribution Function ◽  
Frequency Distribution ◽  
Phonon Frequency ◽  
Heat Capacity Data ◽  
Frequency Distribution Function ◽  
Capacity Data ◽  
Negative Moments

Tables and asymptotic limits of the Debye functions[Formula: see text]are presented for n = 0.5, 1.0, 1.5, 2.0, 2.5. This information may be used to facilitate the calculation of the negative moments of the phonon frequency distribution function from the heat capacity data of crystals.

Frequency distribution function of solid ammonia

1972 ◽  
Vol 50 (2) ◽  
pp. 701-708 ◽  
Author(s):  
P. S. Goyal ◽  
B. A. Dasannacharya ◽  
C. L. Thaper ◽  
P. K. Iyengar
Keyword(s):  
Distribution Function ◽  
Frequency Distribution ◽  
Frequency Distribution Function ◽  
Solid Ammonia
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