Specific heat of heavy water at high temperatures and pressures

1964 ◽  
Vol 14 (4) ◽  
pp. 430-431 ◽  
Author(s):  
S. L. Rivkin ◽  
B. N. Egorov
Keyword(s):  
Specific Heat ◽  
High Temperatures ◽  
Heavy Water

Specific Heat and Thermal Expansion at High Temperatures of Si and Ge

1987 ◽  
Vol 142 (1) ◽  
pp. K13-K17 ◽  
Author(s):  
H. Matsuokagaya ◽  
N. Shoji ◽  
T. Soma
Keyword(s):  
Thermal Expansion ◽  
Specific Heat ◽  
High Temperatures

scholarly journals The atomic rearrangement process in the copper-gold alloy Cu 3 Au

1936 ◽  
Vol 157 (890) ◽  
pp. 213-233 ◽  
Keyword(s):  
Critical Temperature ◽  
Specific Heat ◽  
High Temperatures ◽  
Energy Content ◽  
Relative Number ◽  
Local Order ◽  
Total Change ◽  
High Specific Heat ◽  
Degree Of Order ◽  
Atomic Rearrangement

When certain single-phase alloys are cooled from high temperatures they undergo transformations consisting of a change from a random distribution of atoms amongst the atomic sites to an ordered one. The thermodynamics of such transformations have been considered by Bragg and Williams and also by Bethe and Peierls; the former assume that the energy involved in any atomic interchange is directly proportional to the statistical degree of order (superlattice order) throughout the whole alloy crystal, whilst the latter consider that it depends only on the relative number of like and unlike atoms immediately surrounding the atoms concerned in the interchange (order of nearest neighbours). Both assumptions enable relations to be derived for the change in degree of order (as separately defined) with temperature under equilibrium conditions. These relations are then used to calculate the change in energy content produced as a result of the atomic rearrangement. According to the theory of Bragg and Williams, the superlattice order disappears entirely on heating the alloy through the critical temperature and the energy content is affected only by the ordering process below the critical temperature. The theory of Bethe predicts that, although superlattice order disappears at the critical temperature, a high degree of local order persists, which vanishes only at very high temperatures; an abnormally high specific heat is to be expected, therefore, even above the critical temperature. In the case of β brass (CuZn) both theories give practically the same result for the total change in internal energy below the critical temperature, which is in reasonable agreement with experimental measurement. Neither theory gives the correct rate of release of energy in the neighbourhood of the critical temperature, and it would appear that the final disappearance of superlattice order is more sudden than theory indicates. The specific heat is abnormally high above the critical temperature owing presumably to the presence of local order.

scholarly journals Interpolation between low and high temperatures of the specific heat for spin systems

2017 ◽  
Vol 95 (4) ◽  
Author(s):  
Heinz-Jürgen Schmidt ◽  
Andreas Hauser ◽  
Andre Lohmann ◽  
Johannes Richter
Keyword(s):  
Specific Heat ◽  
High Temperatures ◽  
Spin Systems

scholarly journals Researches on explosives. Part III .— Supplementary note

1905 ◽  
Vol 76 (513) ◽  
pp. 512-514 ◽  
Keyword(s):  
Specific Heat ◽  
High Temperatures ◽  
Royal Society ◽  
Supplementary Note

Since communicating to the Royal Society my Researches on Explosives, Part III, I have succeeded in obtaining the paper by Messrs. Holborn and Austin on the Specific Heat of Gases at High Temperatures. Their attention has been specially directed to carbonic anhydride and their researches show a considerable (but rapidly decreasing) increment in the specific heat of CO 2 with increase of temperature.

Thermal Expansion and Specific Heat of Tungsten Oxide at High Temperatures

1951 ◽  
Vol 84 (5) ◽  
pp. 1054-1055 ◽  
Author(s):  
Shozo Sawada ◽  
Rinjiro Ando ◽  
Shoichiro Nomura
Keyword(s):  
Thermal Expansion ◽  
Specific Heat ◽  
Tungsten Oxide ◽  
High Temperatures
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