Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Radiation Tolerant Interfaces: Influence of Local Stoichiometry at the Misfit Dislocation on Radiation Damage Resistance of Metal/Oxide Interfaces

Journal Article · · Advanced Materials Interfaces
ORCiD logo [1];  [2];  [1];  [3];  [1];  [3];  [4];  [3];  [2];  [2];  [2];  [5]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab.
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical and Computational Sciences Directorate
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  5. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Energy and Environment Directorate
+ Show Author Affiliations

The interaction of radiation with materials controls the performance, reliability, and safety of many structures in nuclear power systems. Revolutionary improvements in radiation damage resistance may be attainable if methods can be found to manipulate interface properties to give optimal interface stability and point defect recombination capability. To understand how variations in interface properties such as misfit dislocation density and local chemistry affect radiation‐induced defect absorption and recombination, a model system of metallic Cr x V 1− x (0 ≤ x ≤ 1) epitaxial films deposited on MgO(001) single crystal substrates has been explored. By controlling film composition, the lattice mismatch between the film and MgO is adjusted to vary the misfit dislocation density at the metal/oxide interface. The stability of these interfaces under various irradiation conditions is studied experimentally and theoretically. The results indicate that, unlike at metal/metal interfaces, the misfit dislocation density does not dominate radiation damage tolerance at metal/oxide interfaces. Rather, the stoichiometry and the location of the misfit dislocation extra half‐plane (in the metal or the oxide) drive radiation‐induced defect behavior. Together, these results demonstrate the sensitivity of defect recombination to interfacial chemistry and provide new avenues for engineering radiation‐tolerant nanomaterials for next‐generation nuclear power plants.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Materials at Irradiation and Mechanical Extremes (CMIME)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
Univ. of Tennessee, Knoxville, TN (United States)
Grant/Contract Number:
AC52-06NA25396; AC05-76RL01830
OSTI ID:
1369199
Alternate ID(s):
OSTI ID: 1401301
Report Number(s):
LA-UR-17-21394
Journal Information:
Advanced Materials Interfaces, Vol. 4, Issue 14; ISSN 2196-7350
Publisher:
Wiley-VCHCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (31)

Effect of grain boundary character on sink efficiency journal October 2012
Generalized Gradient Approximation Made Simple journal October 1996
Design of Radiation Tolerant Materials Via Interface Engineering journal September 2013
Influence of interface sink strength on the reduction of radiation-induced defect concentrations and fluxes in materials with large interface area per unit volume journal September 2011
Instability of irradiation induced defects in nanostructured materials journal May 1997
The transport and fate of helium in martensitic steels at fusion relevant He/dpa ratios and dpa rates journal August 2007
Mechanism for recombination of radiation-induced point defects at interphase boundaries journal January 2012
Calculated grain size-dependent vacancy supersaturation and its effect on void formation journal April 1974
Projector augmented-wave method journal December 1994
Defect structure of epitaxial CrxV1−x thin films on MgO(001) journal January 2014
The ion beam materials analysis laboratory at the environmental molecular sciences laboratory
  • Thevuthasan, S.; Peden, C. H. F.; Engelhard, M. H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 420, Issue 1-2 https://doi.org/10.1016/S0168-9002(98)00908-5
journal January 1999
The use of the high voltage electron microscope to simulate fast neutron-induced void swelling in metals journal July 1971
MATERIALS SCIENCE: How Does Radiation Damage Materials? journal November 2007
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Computer Simulation of Displacement Cascades in Nanocrystalline Ni journal March 2002
Effects of irradiation on the microstructure and mechanical properties of nanostructured materials journal February 2005
The role of interface structure in controlling high helium concentrations journal June 2012
Temperature dependence of disorder accumulation and amorphization in Au-ion-irradiated 6 H − Si C journal October 2004
A fast and robust algorithm for Bader decomposition of charge density journal June 2006
Accumulation and recovery of defects in ion-irradiated nanocrystalline gold journal September 2001
Interface Structure and Radiation Damage Resistance in Cu-Nb Multilayer Nanocomposites journal April 2008
Impact of irradiation on the microstructure of nanocrystalline materials journal August 2004
Direct observation of atomic disordering at the SrTiO3/Si interface due to oxygen diffusion journal March 2002
Effects of implantation temperature on damage accumulation in Al-implanted 4H–SiC journal April 2004
Preferential damage at symmetrical tilt grain boundaries in bcc iron journal June 2001
Ab initiomolecular dynamics for liquid metals journal January 1993
Effect of grain size on void formation during high-energy electron irradiation of austenitic stainless steel journal January 1974
Direct Transformation of Vacancy Voids to Stacking Fault Tetrahedra journal September 2007
Massive Interfacial Reconstruction at Misfit Dislocations in Metal/Oxide Interfaces journal October 2014
Production of Voids in Stainless Steel by High-Voltage Electrons book January 1973
Electronic structure of AlFeN films exhibiting crystallographic orientation change from c- to a-axis with Fe concentrations and annealing effect journal February 2020

Cited By (3)

Influence of Chemistry and Misfit Dislocation Structure on Dopant Segregation at Complex Oxide Heterointerfaces journal September 2018
Beyond Coherent Oxide Heterostructures: Atomic‐Scale Structure of Misfit Dislocations journal June 2019
Semicoherent oxide heterointerfaces: Structure, properties, and implications journal October 2019

Similar Records

Related Subjects

36 MATERIALS SCIENCE
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
density functional theory
interfaces
misfit dislocations
radiation damage
RBS/channeling