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Updated: Dec 30, 2025
08:55
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
8.9K
Initial correlation dependence of aging in phase separating solid binary mixtures and ordering ferromagnets.
Subir K Das1, Koyel Das1, Nalina Vadakkayil1
1Theoretical Sciences Unit and School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur PO, Bangalore 560064, India.
Summary
Aging phenomena in solid binary mixtures were studied after quenches from a critical point. Researchers analyzed autocorrelation functions, comparing results for different systems and initial configurations to understand correlation decay.
Area of Science:
- Condensed Matter Physics
- Statistical Mechanics
- Materials Science
Background:
- Binary mixtures near a critical point exhibit long-range spatial correlations.
- Aging phenomena are crucial for understanding systems far from equilibrium.
- Understanding phase transitions and ordering dynamics is key in materials science.
Purpose of the Study:
- To investigate aging phenomena in solid binary mixtures after critical point quenches.
- To analyze the decay of order-parameter autocorrelation functions.
- To compare ordering dynamics in binary mixtures with uniaxial ferromagnets.
Main Methods:
- Monte Carlo simulations of the two-dimensional Ising model with Kawasaki exchange kinetics.
- Simulations using the Glauber mechanism for uniaxial ferromagnets.
- Analysis using state-of-the-art methods for autocorrelation functions.
Main Results:
- Decay of two-time order-parameter autocorrelation functions was analyzed.
- Comparative results were obtained for binary mixtures and uniaxial ferromagnets.
- The influence of initial spatial correlations on aging was investigated.
Conclusions:
- The study provides insights into the aging dynamics of solid binary mixtures.
- Comparison with ferromagnets highlights similarities and differences in ordering processes.
- The role of initial structure in correlation decay was elucidated.
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