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Title: Strain-induced phase and oxygen-vacancy stability in ionic interfaces from first-principles calculations

Journal Article · · Journal of Physical Chemistry. C
DOI:https://doi.org/10.1021/jp507876m· OSTI ID:1185425
 [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Understanding interfacial chemistry is becoming crucial in materials design for heterointerfaces. Using density functional theory, we elucidate the effect of strained interfaces on phase and oxygen-vacancy stability for CeO2 | ZrO2, ThO2 | ZrO2 and CeO2 | ThO2 interfaces. The calculations show that ZrO2 transforms from cubic fluorite to the orthorhombic columbite under tensile strain providing evidence of a previous experimental speculation of an unrecognized ZrO2 phase. We also show that oxygen vacancies could be preferably stabilized on either side of the interface by manipulating strain. We predict that they are stable in tensile-strain, and unstable in compressivestrained materials.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185425
Journal Information:
Journal of Physical Chemistry. C, Vol. 118, Issue 51; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (10)

Discovery of zirconium dioxides for the design of better oxygen-ion conductors using efficient algorithms beyond data mining journal January 2018
Designing Strained Interface Heterostructures for Memristive Devices journal February 2017
Determining interface structures in vertically aligned nanocomposite films journal June 2019
Heterointerface engineering for enhancing the electrochemical performance of solid oxide cells journal January 2020
Self-consistent site-dependent DFT+ U study of stoichiometric and defective SrMnO 3 journal March 2019
Equilibrium oxygen storage capacity of ultrathin CeO2-δ depends non-monotonically on large biaxial strain journal May 2017
Controlling Oxygen Mobility in Ruddlesden–Popper Oxides journal March 2017
Determining interface structures in vertically aligned nanocomposite films text January 2019
Designing Strained Interface Heterostructures for Memristive Devices text January 2017
Self-consistent site-dependent DFT+U study of stoichiometric and defective SrMnO₃ text January 2019

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