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Title: A new compositional microscopic degree of freedom at grain boundaries in complex compounds: a case study in spinel

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI: https://doi.org/10.1039/d4cp01070a · OSTI ID:2356999

The accurate computational treatment of polycrystalline materials requires the rigorous generation of grain boundary (GB) structures as many quantities of interest depend strongly on the specifics of the macroscopic and microscopic degrees of freedom (DoFs) used in their creation. In complex materials, containing multiple sublattices and where atomic composition can vary spatially through the system, we introduce a new microscopic DoF based on this compositional variation which we find governs observable properties. In spinel – a wide class of complex oxides where this compositional variation manifests as cation inversion – we exploit this DoF to generate and analyze low-energy microstates of two GBs with three spinel chemistries (FeCr2O4, NiCr2O4 and MgAl2O4). This treatment is found to allow for the co-redistribution of cations at the GBs which acts to modify the spatial charge distribution, defect segregation energy and defect transport through these regions. Additionally, we generate low-energy metastable microstates of the GB system with an induced cation disorder, simulating those which may develop as a result of damage events. These are then analyzed to discover their composition and defect transport properties which depend strongly on the amount of induced damage. We conclude that considering this new DoF is important in describing the properties of GBs in complex materials.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Fundamental Understanding of Transport Under Reactor Extremes (FUTURE); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC). Office of Basic Energy Sciences (BES)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
2356999
Report Number(s):
LA-UR--24-21131
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 22 Vol. 26; ISSN 1463-9076
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (73)

Faster Diffusion of Oxygen Along Dislocations in (La,Sr)MnO3+δ Is a Space‐Charge Phenomenon journal September 2021
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Atomic-Scale Studies of Defect Interactions with Homo- and Heterophase Interfaces journal April 2016
The mechanism of high temperature aqueous corrosion of stainless steels journal January 1991
Cation disorder in high dose, neutron-irradiated spinel journal March 1995
Why is magnesia spinel a radiation-resistant material? journal March 1995
Structures and transitions in bcc tungsten grain boundaries and their role in the absorption of point defects journal October 2018
Transparent ceramic and glass-ceramic materials for armor applications journal November 2017
Phase transformations at interfaces: Observations from atomistic modeling journal October 2016
The role of cation ordering and disordering on mass transport in complex oxides journal April 2021
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales journal February 2022
Synthesis, characterization and microwave dielectric properties of spinel MgGa2O4 ceramic materials journal February 2014
Space charge characterisation by EDS microanalysis in spinel MgAl2O4 journal January 2005
Reduced grain boundary energies in rare-earth doped MgAl2O4 spinel and consequent grain growth inhibition journal October 2017
Frenkel pair accumulation induced crystallization of amorphous MgAl2O4 journal August 2008
Tilt grain boundary stability in uranium dioxide and effect on xenon segregation journal April 2023
Molecular dynamics simulation of point defect accumulation in MgAl2O4
  • Yamamoto, T.; Chartier, A.; Yasuda, K.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 12-13 https://doi.org/10.1016/j.nimb.2008.03.231
journal June 2008
Swift heavy ion irradiated spinel ferrite: A cheap radiation resistant material journal July 2016
Defect-interface interactions journal October 2015
Atomistic Mechanisms of Binary Alloy Surface Segregation from Nanoseconds to Seconds Using Accelerated Dynamics journal June 2022
Density Functional Theory Study of Local Environment Effects on Oxygen Vacancy Properties in Magnetite journal August 2023
Size-Induced Structural Disorder Enables Ultrahard Oxides journal June 2017
Insights into Microscopic Diffusion Processes at a Solid/Fluid Interface under Supercritical Conditions: A Study of the Aqueous Calcite (101̅4) Surface journal November 2012
Opposite correlations between cation disordering and amorphization resistance in spinels versus pyrochlores journal October 2015
A genetic algorithm for predicting the structures of interfaces in multicomponent systems journal February 2010
Evidence for percolation diffusion of cations and reordering in disordered pyrochlore from accelerated molecular dynamics journal September 2017
Radiation-induced segregation in a ceramic journal May 2020
Do dislocations act as atomic autobahns for oxygen in the perovskite oxide SrTiO 3 ? journal January 2014
Insights into dynamic processes of cations in pyrochlores and other complex oxides journal January 2015
A generalised space-charge theory for extended defects in oxygen-ion conducting electrolytes: from dilute to concentrated solid solutions journal January 2015
On the mobility of carriers at semi-coherent oxide heterointerfaces journal January 2017
Grain boundary phases in bcc metals journal January 2018
Spatially-varying inversion near grain boundaries in MgAl 2 O 4 spinel journal January 2020
Short range order in disordered spinels and the impact on cation vacancy transport journal January 2023
The formation of equilibrium space-charge zones at grain boundaries in the perovskite oxide SrTiO3 journal January 2009
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Equation of State Calculations by Fast Computing Machines journal June 1953
Magnetic Structures in FeCr 2 S 4 and FeCr 2 O 4 journal March 1964
Enhanced radiation tolerance in nanocrystalline MgGa2O4 journal June 2007
Mechanism for transient migration of xenon in UO2 journal April 2011
Radiation interaction with tilt grain boundaries in β-SiC journal March 2012
The role of charge and ionic radius on fission product segregation to a model UO 2 grain boundary journal April 2013
Disordering and grain boundaries of (Ni,Fe)Cr 2 O 4 spinels from atomistic calculations journal October 2013
Mechanical behavior of (Ni, Fe)Cr 2 O 4 spinel grain boundaries studied by molecular dynamics simulations journal July 2019
Grain boundaries in ionic crystals journal August 1986
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Atomistic calculations of charged point defects at grain boundaries in SrTiO3 journal August 2021
Ab initio study of BaTiO 3 and PbTiO 3 surfaces in external electric fields journal May 2001
First-principles theory of ionic diffusion with nondilute carriers journal October 2001
Order and structural units in simulations of twist grain boundaries in silicon at absolute zero journal October 2006
Defect kinetics in spinels: Long-time simulations of Mg Al 2 O 4 , Mg Ga 2 O 4 , and Mg In 2 O 4 journal March 2007
Intrinsic electrostatic effects in nanostructured ceramics journal February 2010
First-passage time approach to kinetic Monte Carlo simulations of metal (100) growth journal June 2010
Atomistic modeling of long-term evolution of twist boundaries under vacancy supersaturation journal December 2012
Space charges and defect concentration profiles at complex oxide interfaces journal June 2016
First-principles calculations for charged defects at surfaces, interfaces, and two-dimensional materials in the presence of electric fields journal May 2018
Simple Point-Ion Electrostatic Model Explains the Cation Distribution in Spinel Oxides journal August 2010
Monte Carlo Algorithms with Absorbing Markov Chains: Fast Local Algorithms for Slow Dynamics journal January 1995
Thermodynamic Criterion for the Stability of Amorphous Intergranular Films in Covalent Materials journal September 1996
Structure and Mobility of Defects Formed from Collision Cascades in MgO journal March 2004
First Principles Calculation of the Interdiffusion Coefficient in Binary Alloys journal February 2005
Self-optimized construction of transition rate matrices from accelerated atomistic simulations with Bayesian uncertainty quantification journal May 2018
Elastodiffusion and cluster mobilities using kinetic Monte Carlo simulations: Fast first-passage algorithms for reversible diffusion processes journal October 2019
Interplay between defect transport and cation spin frustration in corundum-structured oxides journal March 2021
On the Thermodynamic Stability of Amorphous Intergranular Films in Covalent Materials journal March 1997
Structure of Spinel journal December 1999
Grain‐Boundary Characterization in a Nonstoichiometric Fine‐Grained Magnesium Aluminate Spinel: Effects of Defect Segregation at the Space‐Charge Layers journal April 2009
Charge distribution in nano‐scale grains of magnesium aluminate spinel journal October 2016
Inversion, chemical complexity, and interstitial transport in spinels journal January 2021
Analysis of the Fragmentation of AlON and Spinel Under Ballistic Impact journal April 2013
Radiation Tolerance of Complex Oxides journal August 2000
Synthesis and Single Crystal Growth by Floating Zone Technique of FeCr2O4 Multiferroic Spinel: Its Structure, Composition, and Magnetic Properties journal August 2022
Cation Distributions and Microwave Dielectric Properties of Spinel-Structured MgGa2O4Ceramics journal September 2013

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