Simulation of Atomic Configurations in Short Range Ordered Ni3Fe

1982 ◽  
Vol 21 ◽  
Author(s):  
F. Bley ◽  
P. Cenedese ◽  
S. Lefevbre
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Heat Treatments ◽  
Order Parameters ◽  
Range Order ◽  
Ordered Structure ◽  
Antiphase Boundaries

ABSTRACTA procedure similar to that of Gehlen and Cohen and Williams is used to simulate atomic configurations of short range ordered Ni3Fe. The short range order parameters were previously measured after different heat treatments. Probabilities of different clusters are computed from those models : triangles, tetrahedrons, clusters as defined by Clapp.These probabilities vary with the enhancement of short range order. It is shown that most of the clusters the probabilities of which increase with short range order, are directly related with the L12 ordered structure: either they have the L12 structure, or the L12 structure modified by one or two antiphase boundaries. Such clusters are identified in the model in order to display perfectly ordered domains.

Calculation of Pairwise Effective Potentials in the Disordered Ni-22.5at.%Fe Alloy Using Model Potential Method with Account of Size Effect

2021 ◽  
Vol 323 ◽  
pp. 125-129
Author(s):  
Valentin Silonov ◽  
Lkhamsuren Enkhtor
Keyword(s):  
Size Effect ◽  
Short Range ◽  
Short Range Order ◽  
Potential Method ◽  
Model Potential ◽  
Order Parameters ◽  
Range Order ◽  
Disorder Phase Transition ◽  
Effective Potentials ◽  
Atomic Displacements

Pairwise effective potentials in first seventeen shells of the Ni-22.5at.%Fe alloy are calculated using model potential method with account of the linear size effect. Using obtained values of pairwise effective potentials, the short range order parameters on the first seventeen shells of alloy are calculated by Krivoglaz-Clapp-Moss method. The calculated values ​​of the short-range order parameters were fitted to the experimental values ​​by varying the parameters of static atomic displacements. Reliable value of critical temperature of order-disorder phase transition in Ni-22.5at.%Fe alloy was calculated using obtained meanings of pairwise effective potentials.

Temperature dependence of short-range-order parameters

1978 ◽  
Vol 21 (4) ◽  
pp. 454-458
Author(s):  
G. P. Revkevich ◽  
E. I. Bodneva
Keyword(s):  
Temperature Dependence ◽  
Short Range ◽  
Short Range Order ◽  
Order Parameters ◽  
Range Order

THE APPROACH TO PARAMAGNETIC SATURATION

1962 ◽  
Vol 40 (12) ◽  
pp. 1693-1702 ◽  
Author(s):  
Richard Stevenson
Keyword(s):  
External Field ◽  
Magnetic Moment ◽  
Short Range ◽  
Short Range Order ◽  
Field Method ◽  
Order Parameters ◽  
Range Order ◽  
Molecular Field ◽  
Paramagnetic Materials ◽  
High Fields

The process of paramagnetic saturation in real substances is considered by means of the molecular field method and by Smart's elaboration of the Oguchi method. The magnetic moment and short-range order parameters are calculated as a function of the external field. Some qualitative rules are obtained which describe general tendencies toward saturation. The possibility arises that paramagnetic materials in high fields may change into a state of greater stability by altering their exchange couplings.

Short-range Order Parameters in fcc Binary Alloys

2007 ◽  
pp. 145-158 ◽  
Author(s):  
J. S. Faulkner ◽  
Silvia Pella ◽  
Aurelian Rusanu ◽  
Yevgeniy Puzyrev
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Binary Alloys ◽  
Order Parameters ◽  
Range Order ◽  
Fcc Binary Alloys

Estimation of Short-Range Order Parameters in Cu-Cd Amorphous Alloys

1994 ◽  
Vol 166-169 ◽  
pp. 387-392
Author(s):  
M. Niewiara ◽  
Eugeniusz Łągiewka ◽  
J. Podwórny
Keyword(s):  
Amorphous Alloys ◽  
Short Range ◽  
Short Range Order ◽  
Order Parameters ◽  
Range Order
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