The extraction of phonon and electron properties from experimental heat capacity with new approximation based on high temperature expansion

1997 ◽  
Vol 299 (1-2) ◽  
pp. 101-108 ◽  
Author(s):  
Victor N. Naumov ◽  
Galina I. Frolova ◽  
Tooru Atake
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Temperature Expansion ◽  
Experimental Heat ◽  
High Temperature Expansion

scholarly journals Study of Thermodynamic Functions for Iron Monoboride FeB

2015 ◽  
Vol 16 (1) ◽  
pp. 136-139
Author(s):  
N. Yu. Filonenko
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Temperature Dependence ◽  
Binary Alloy ◽  
Thermodynamic Functions ◽  
Thermodynamic Potential ◽  
Thermodynamic Quantities ◽  
Zeroth Order ◽  
Temperature Expansion ◽  
High Temperature Expansion

The thermodynamic quantities for iron monoboride FeB, such as entropy, enthalpy, heat capacity and their temperature dependence, are considered. It is shown, that accounting for contribution to the zeroth-order high-temperature expansion of thermodynamic potential for Fe-B binary alloy enables to describe forming monoboride FeB in more complete way from the viewpoint of thermodynamics.

MONTE CARLO STUDY OF THE SPIN-1/2 HEISENBERG MODEL IN 1, 2, AND 3 DIMENSIONS

1991 ◽  
Vol 05 (13) ◽  
pp. 907-914 ◽  
Author(s):  
RICHARD J. CRESWICK ◽  
CYNTHIA J. SISSON
Keyword(s):  
Monte Carlo ◽  
High Temperature ◽  
Spin Wave ◽  
Heisenberg Model ◽  
Transition Probability ◽  
Lattice Models ◽  
Wave Theory ◽  
Temperature Expansion ◽  
High Temperature Expansion ◽  
Good Agreement

The properties of the spin-1/2 Heisenberg model on 1, 2, and 3-dimensional lattices are calculated using the Decoupled Cell Method of Homma et al., and these results are compared with high temperature and spin-wave expansions, and with other numerical approaches. The DCM has advantages over other Monte Carlo methods currently in wide use in that the transition probability is positive definite, there is no need to introduce an additional imaginary time, or Trotter, dimension, and the acceptance rate for transitions is comparable to that of classical lattice models. We find very good agreement between the DCM and the high temperature expansion in the temperature region where the high temperature expansion is valid, and reasonably good agreement at low temperatures with spin wave theory. The DCM fails for temperatures T < Tc which decreases with the size of the cell.

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