Nonuniversal critical dynamics in Monte Carlo simulations

1987 ◽  
Vol 58 (2) ◽  
pp. 86-88 ◽  
Author(s):  
Robert H. Swendsen ◽  
Jian-Sheng Wang
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Critical Dynamics

scholarly journals Critical dynamics of the Potts model: short-time Monte Carlo simulations

2004 ◽  
Vol 333 (3-4) ◽  
pp. 277-283 ◽  
Author(s):  
Roberto da Silva ◽  
J.R. Drugowich de Felício
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Potts Model ◽  
Critical Dynamics ◽  
Short Time

scholarly journals Monte Carlo Simulations of Short-Time Critical Dynamics

1998 ◽  
Vol 12 (14) ◽  
pp. 1419-1484 ◽  
Author(s):  
B. Zheng
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Dynamic Systems ◽  
Critical Exponents ◽  
Xy Model ◽  
Critical Dynamics ◽  
Time Dynamics ◽  
Time Critical ◽  
Short Time ◽  
Dynamic Ising Model

Monte Carlo simulations of the short-time critical dynamics are reviewed. The short-time universal scaling behavior of the dynamic Ising model and Potts model are discussed in detail, while extension and application to more complex systems as the XY model, the fully frustrated XY model and other dynamic systems are also presented. The investigation of the universal behavior of the short-time dynamics not only enlarges the fundamental knowledge on critical phenomena but also, more interestingly, provides possible new ways to determine not only the new critical exponents θ and θ1, but also the traditional dynamic critical exponent z as well as all static critical exponents.

Low-voltage EDS of magnesium ferrite Dendrites in a FEG-SEM

1996 ◽  
Vol 54 ◽  
pp. 478-479
Author(s):  
Matthew T. Johnson ◽  
Ian M. Anderson ◽  
Jim Bentley ◽  
C. Barry Carter
Keyword(s):  
Monte Carlo ◽  
Quantitative Analysis ◽  
Monte Carlo Simulations ◽  
Cross Section ◽  
Spatial Resolution ◽  
Low Voltage ◽  
Magnesium Ferrite ◽  
X Ray ◽  
Interaction Volume ◽  
Ferrite Spinel

Energy-dispersive X-ray spectrometry (EDS) performed at low (≤ 5 kV) accelerating voltages in the SEM has the potential for providing quantitative microanalytical information with a spatial resolution of ∼100 nm. In the present work, EDS analyses were performed on magnesium ferrite spinel [(MgxFe1−x)Fe2O4] dendrites embedded in a MgO matrix, as shown in Fig. 1. spatial resolution of X-ray microanalysis at conventional accelerating voltages is insufficient for the quantitative analysis of these dendrites, which have widths of the order of a few hundred nanometers, without deconvolution of contributions from the MgO matrix. However, Monte Carlo simulations indicate that the interaction volume for MgFe2O4 is ∼150 nm at 3 kV accelerating voltage and therefore sufficient to analyze the dendrites without matrix contributions.Single-crystal {001}-oriented MgO was reacted with hematite (Fe2O3) powder for 6 h at 1450°C in air and furnace cooled. The specimen was then cleaved to expose a clean cross-section suitable for microanalysis.

Sign in / Sign up

Export Citation Format

Share Document