Theoretical predictions of heats of formation of fcc binary transition-metal alloys using the corrected effective-medium theory

1994 ◽  
Vol 49 (13) ◽  
pp. 8663-8670 ◽  
Author(s):  
Todd J. Raeker ◽  
Andrew E. DePristo
Keyword(s):  
Transition Metal ◽  
Effective Medium Theory ◽  
Effective Medium ◽  
Metal Alloys ◽  
Heats Of Formation ◽  
Medium Theory ◽  
Transition Metal Alloys ◽  
Theoretical Predictions

Heats of Formation of Transition-Metal Alloys

1979 ◽  
Vol 43 (15) ◽  
pp. 1130-1134 ◽  
Author(s):  
R. E. Watson ◽  
L. H. Bennett
Keyword(s):  
Transition Metal ◽  
Metal Alloys ◽  
Heats Of Formation ◽  
Transition Metal Alloys

Heats of formation of binary transition metal alloys

1983 ◽  
Vol 48 (6) ◽  
pp. 561-562 ◽  
Author(s):  
A. Pasturel ◽  
P. Hicter ◽  
F. Cyrot-Lackmann
Keyword(s):  
Transition Metal ◽  
Metal Alloys ◽  
Heats Of Formation ◽  
Transition Metal Alloys

The magnetoresistance of polycrystalline copper

1979 ◽  
Vol 291 (1385) ◽  
pp. 569-598 ◽  
Keyword(s):  
Fermi Surface ◽  
Effective Medium Theory ◽  
Dominant Role ◽  
Effective Medium ◽  
Polycrystalline Copper ◽  
High Symmetry ◽  
Medium Theory ◽  
Angle Scattering ◽  
Theoretical Predictions ◽  
Observed Behaviour

The effective medium theory has been applied to calculate the transverse magnetoresistance of random polycrystalline copper on the basis of the known Fermi surface, in order to explain the nearly linear variation of resistance with magnetic field up to very high values. Ziman’s (1958) conjecture that the conductivity tensor should be averaged over all orientations is shown to be a good first approximation, though it does suggest that the resistance should have been observed to approach saturation in some experiments, when the open orbits might play a dominant role at large values of w c T. The effective medium theory, by raising the saturation level considerably, eliminates this difficulty. The conductivity due to open and highly extended orbits, when calculated by geometrical analysis of the Fermi surface, is found to be quite sufficient to account for the observed behaviour. Certain residual discrepancies, especially a deficit in conductivity in very pure samples at large w c T, are explained as arising partly from size effects and small angle scattering, but mainly from the markedly non-random texture of drawn and annealed wires; it is concluded that there is no reason to doubt that standard theories of magnetoresistance are capable of interpreting the observations. Most of the calculations of conductivity due to open and extended orbits are straightforward in principle and remarkably insensitive to the least well known parameters involved, the relaxation time and the angular distribution of scattering, so that the theoretical predictions are reasonably secure. Only in dealing with the extended orbits in the vicinity of high symmetry directions are approximations of dubious validity invoked, and even they are provided with more or less plausible justification. For the most part, however, the work represents a drawing together of well established concepts, and their application to a real Fermi surface rather than to convenient but imprecise approximate models.

scholarly journals Heats of formation of Zirconium binary transition metal alloys

2009 ◽  
Vol 2 (3) ◽  
pp. 927-932 ◽  
Author(s):  
H. Krarcha ◽  
A. Belgacem bouzida
Keyword(s):  
Transition Metal ◽  
Metal Alloys ◽  
Heats Of Formation ◽  
Transition Metal Alloys

New developments in the ab initio determination of transition metal alloys phase diagram

1993 ◽  
Vol 90 ◽  
pp. 249-254 ◽  
Author(s):  
C Wolverton ◽  
M Asta ◽  
S Ouannasser ◽  
H Dreyssé ◽  
D de Fontaine
Keyword(s):  
Phase Diagram ◽  
Transition Metal ◽  
Ab Initio ◽  
Metal Alloys ◽  
New Developments ◽  
Transition Metal Alloys
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