Monte Carlo calculation of order on the triangular Ising lattice with next-nearest-neighbor interactions

1977 ◽  
Vol 15 (7) ◽  
pp. 3436-3441 ◽  
Author(s):  
Paul H. E. Meijer ◽  
G. W. Cunningham
Keyword(s):  
Monte Carlo ◽  
Nearest Neighbor ◽  
Monte Carlo Calculation ◽  
Ising Lattice

Magnetic Properties of Chromite ACr2S4 (A=Zn, Cd and Hg) Spinels: A Monte Carlo Study

SPIN ◽  
2018 ◽  
Vol 08 (04) ◽  
pp. 1850021
Author(s):  
A. El Maazouzi ◽  
R. Masrour ◽  
A. Jabar ◽  
M. Hamedoun
Keyword(s):  
Monte Carlo ◽  
Magnetic Properties ◽  
Nearest Neighbor ◽  
Monte Carlo Calculation ◽  
Magnetic Hysteresis ◽  
Three Dimensional ◽  
Exchange Interactions ◽  
Monte Carlo Study ◽  
Model Transition ◽  
Good Agreement

The magnetic properties of chromite ACr2S4 ([Formula: see text]n, Cd and Hg) spinels have been investigated. The first, second and the third nearest-neighbor exchange interactions are included into a Metropolis-based Monte Carlo calculation for the three-dimensional Ising model. Transition temperatures have been deduced from the variation of magnetizations and magnetic susceptibilities for three spinel systems. The magnetic hysteresis cycles have been deduced for three systems. Critical exponents associated with the magnetization, magnetic susceptibility and specific heat have been determined. Superparamagnetism behavior has been obtained below the transition temperature. The results of our simulations are in good agreement with other results.

scholarly journals Monte-Carlo simulations of spinodal ordering and decomposition in compositionally modulated alloys

1990 ◽  
Vol 5 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Michael Atzmon
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Nearest Neighbor ◽  
Early Stage ◽  
Three Dimensions ◽  
Heat Of Mixing ◽  
Modulation Amplitude ◽  
Ising Lattice ◽  
One Dimensional ◽  
Kinetics Of

The early-stage kinetics of interdiffusion in compositionally modulated films have been studied by Monte-Carlo simulations on an Ising lattice in two and three dimensions, using nearest-neighbor interactions. For a negative heat of mixing and below the order-disorder transition temperature, if a short-wavelength modulation is along a direction that is not consistent with long-range order, then its temporal evolution does not follow the Cahn-Hilliard-Cook theory. The modulation amplitude decreases as a function of time, rather than increases; i.e., no one-dimensional spinodal ordering is observed. This disagreement with the theory implies that ordering in three dimensions cannot be described by a one-dimensional theory.

Monte Carlo calculation of the energy parameters and spatial distribution of the cathodic arc ions while passing through the macro-particles filters

2018 ◽  
Vol 1 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Alexey Chernogor ◽  
Igor Blinkov ◽  
Alexey Volkhonskiy
Keyword(s):  
Magnetic Field ◽  
Mass Transfer ◽  
Monte Carlo ◽  
Monte Carlo Calculation ◽  
Inhomogeneous Magnetic Field ◽  
Flow Energy ◽  
Wide Range ◽  
Field Concentrator ◽  
Cathodic Arc ◽  
The Magnetic Field

The flow, energy distribution and concentrations profiles of Ti ions in cathodic arc are studied by test particle Monte Carlo simulations with considering the mass transfer through the macro-particles filters with inhomogeneous magnetic field. The loss of ions due to their deposition on filter walls was calculated as a function of electric current and number of turns in the coil. The magnetic field concentrator that arises in the bending region of the filters leads to increase the loss of the ions component of cathodic arc. The ions loss up to 80 % of their energy resulted by the paired elastic collisions which correspond to the experimental results. The ion fluxes arriving at the surface of the substrates during planetary rotating of them opposite the evaporators mounted to each other at an angle of 120° characterized by the wide range of mutual overlapping.

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