Theoretical Investigation of Phase Stability in Ti-V and Ti-Cr Substitutional Alloys

1990 ◽  
Vol 186 ◽  
Author(s):  
M. Sluiter ◽  
P.E.A. Turchi

AbstractThe phase stability of Ti-V and Ti-Cr alloys is examined within the context of an electronic structure description. Energies of mixing, effective pair interactions, and phase diagrams are computed and compared to available experimental data. A metastable distorted B2 type of structure is predicted in near equiatomic Ti-Cr.

1990 ◽  
Vol 186 ◽  
Author(s):  
P.E.A. Turchi ◽  
M. Sluiter ◽  
F.J. Pinski ◽  
D.D. Johnson

AbstractElectronic structure and phase stability properties of Ni-Ti and Ni-Al around equiatomic composition are investigated with a first principles approach. The study is based upon the generalized purturbation method applied to the Korringa-Kohn-Rostoker multiple scattering formulation of the coherent potential approximation. Within this framework, effective cluster interactions which build up the configuration-dependent part of the internal energy are calculated. The strength of ordering tendencies in both bcc-based substitutional alloys is compared and contrasted in terms of hybridisation effects, in relation with experimental evidences.


1991 ◽  
Vol 168 (1) ◽  
pp. 127-144 ◽  
Author(s):  
A. Gonis ◽  
M. Sluiter ◽  
P.E.A. Turchi ◽  
G.M. Stocks ◽  
D.M. Nicholson

1990 ◽  
Vol 186 ◽  
Author(s):  
M. Sluiter ◽  
P.E.A. Turchi

AbstractThe phase stability of non magnetic Cu-Ni alloys is studied within a tight binding framework. Densities of states, enthalpies of mixing and ultimately the phase diagram are computed and compared to experimental data.


Author(s):  
Huimin Guo ◽  
Xiaolin Ma ◽  
Zhiwen Lei ◽  
Yang Qiu ◽  
Bernhard Dick ◽  
...  

The electronic structure and photophysical properties of a series of N-Methyl and N-Acetyl substituted alloxazine (AZs) were investigated with extensive density functional theory (DFT) and time-dependent density functional theory (TD-DFT)...


2007 ◽  
Vol 368 (6) ◽  
pp. 495-498 ◽  
Author(s):  
Y.J. Shi ◽  
Y.L. Du ◽  
G. Chen ◽  
G.L. Chen

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