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Title: Slow relaxation of cascade-induced defects in Fe

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [1];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science

On-the-fly kinetic Monte Carlo (KMC) simulations are performed to investigate slow relaxation of non-equilibrium systems. Point defects induced by 25 keV cascades in α -Fe are shown to lead to a characteristic time-evolution, described by the replenish and relax mechanism. Then, we produce an atomistically-based assessment of models proposed to explain the slow structural relaxation by focusing on the aggregation of 50 vacancies and 25 self-interstital atoms (SIA) in 10-lattice-parameter α-Fe boxes, two processes that are closely related to cascade annealing and exhibit similar time signature. Four atomistic effects explain the timescales involved in the evolution: defect concentration heterogeneities, concentration-enhanced mobility, cluster-size dependent bond energies and defect-induced pressure. In conclusion, these findings suggest that the two main classes of models to explain slow structural relaxation, the Eyring model and the Gibbs model, both play a role to limit the rate of relaxation of these simple point-defect systems.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Defect Physics in Structural Materials (CDP)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185750
Alternate ID(s):
OSTI ID: 1181600
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 5; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (65)

Viscosity, Plasticity, and Diffusion as Examples of Absolute Reaction Rates journal April 1936
Dimensionality of interstitial cluster motion in bcc-Fe journal March 2007
Energy landscape of small clusters of self-interstitial dumbbells in iron journal March 2011
Event-Based Relaxation of Continuous Disordered Systems journal November 1996
Logarithmic relaxation in glass-forming systems journal July 2002
Kinetic activation-relaxation technique journal October 2011
The effect of increased vacancy mobility in the depleted cascade zones journal October 1991
Atomistic study of multimechanism diffusion by self-interstitial defects in α-Fe journal January 2010
Logarithmic Decay in Single-Particle Relaxation of Hydrated Lysozyme Powder journal September 2009
Logarithmic relaxation due to minimization of interactions in the Burridge-Knopoff model journal August 2006
Structural relaxation kinetics for first- and second-order processes: Application to pure amorphous silicon journal April 2009
Defect relaxation in amorphous silicon: Stretched exponentials, the Meyer-Neldel rule, and the Staebler-Wronski effect journal February 1991
Comment on “Mechanism of Void Nucleation and Growth in bcc Fe: Atomistic Simulations at Experimental Time Scales” journal May 2012
Development of an interatomic potential for phosphorus impurities in  -iron journal June 2004
Nanogranular origin of concrete creep journal June 2009
Replenish and Relax: Explaining Logarithmic Annealing in Ion-Implanted c -Si journal September 2013
Optimized energy landscape exploration using the ab initio based activation-relaxation technique journal July 2011
Relaxation Kinetics of Nanoscale Indents in a Polymer Glass journal March 2009
Activation energy spectra and relaxation in amorphous materials journal January 1983
The Activation-Relaxation Technique: ART Nouveau and Kinetic ART journal January 2012
Accelerated atomistic simulation study on the stability and mobility of carbon tri-interstitial cluster in cubic SiC journal June 2014
Knoll et al. Reply: journal September 2009
Comment on “Relaxation Kinetics of Nanoscale Indents in a Polymer Glass” journal September 2009
Interplay between Shear Loading and Structural Aging in a Physical Gelatin Gel journal September 2009
Magnetic relaxation in neutron-irradiated iron journal May 1973
Cascade defect evolution processes: Comparison of atomistic methods journal November 2013
Nearly logarithmic decay in the colloidal hard-sphere system journal June 2005
Protein Conformational Dynamics Probed by Single-Molecule Electron Transfer journal October 2003
Simulations of aging and plastic deformation in polymer glasses journal September 2007
Logarithmic relaxation in radiation-amorphized zircon journal July 2007
Optimization of the Kinetic Activation-Relaxation Technique, an off-lattice and self-learning kinetic Monte-Carlo method journal February 2012
Solving the Puzzle of 100 Interstitial Loop Formation in bcc Iron journal June 2013
Slow dynamics in a model of the cellulose network journal July 2007
Slow logarithmic relaxation in models with hierarchically constrained dynamics journal January 2001
A new algorithm for Monte Carlo simulation of Ising spin systems journal January 1975
Colloidal Adsorption at Fluid Interfaces: Regime Crossover from Fast Relaxation to Physical Aging journal July 2013
Dynamic Distance Disorder in Proteins Is Caused by Trapping journal May 2006
Stress Aging in the Electron Glass journal February 2004
Long-time relaxation of ion-bombarded silicon studied with the kinetic activation-relaxation technique: Microscopic description of slow aging in a disordered system journal December 2013
Molecular-dynamics simulation of stress relaxation on a triangular lattice journal April 1993
On relaxations and aging of various glasses journal February 2012
Self-evolving atomistic kinetic Monte Carlo: fundamentals and applications journal August 2012
Strain effects and intermixing at the Si surface: Importance of long-range elastic corrections in first-principles calculations journal October 2014
Understanding long-time vacancy aggregation in iron: A kinetic activation-relaxation technique study journal October 2014
Multiscale modelling of defect kinetics in irradiated iron journal December 2004
Slow dynamics and stress relaxation in a liquid as an elastic medium journal June 2007
Microscopic Origin of the Logarithmic Time Evolution of Aging Processes in Complex Systems journal May 2013
Logarithmic relaxation in a colloidal system journal September 2003
Kinetic activation-relaxation technique: An off-lattice self-learning kinetic Monte Carlo algorithm journal October 2008
Dynamics of Lennard-Jones clusters: A characterization of the activation-relaxation technique journal December 2000
Comparison of empirical interatomic potentials for iron applied to radiation damage studies journal November 2010
Flowing damage in ion-implanted amorphous silicon journal June 2011
Power-law and logarithmic relaxations of hydrated proteins: A molecular dynamics simulations study journal November 2012
Logarithmic Kinetics of the Amorphous-Amorphous Transformations in SiO 2 and GeO 2 Glasses under High Pressure journal February 1998
Simulating complex atomistic processes: On-the-fly kinetic Monte Carlo scheme with selective active volumes journal October 2011
Colloidal gels: equilibrium and non-equilibrium routes journal July 2007
Dynamics of Lennard-Jones clusters: A characterization of the activation-relaxation technique journal January 2000
Simulations of aging and plastic deformation in polymer glasses text January 2007
Colloidal Gels: Equilibrium and Non-Equilibrium Routes text January 2007
Slow dynamics in a model of the cellulose network text January 2007
Logarithmic decay in single-particle relaxations of hydrated lysozyme powder text January 2009
Accelerated atomistic simulation study on the stability and mobility of carbon tri-interstitial cluster in cubic SiC text January 2016
Slow logarithmic relaxation in models with hierarchically constrained dynamics text January 2000
Logarithmic Relaxation in Glass-Forming Systems text January 2002
Logarithmic Relaxation in a Colloidal System text January 2003

Cited By (3)

Subthreshold firing in Mott nanodevices journal May 2019
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