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Title: Strain tuning and strong enhancement of ionic conductivity in SrZrO3-RE2O3 (RE = Sm, Eu, Gd, Dy, and Er) nanocomposite films

Journal Article · · Advanced Functional Materials
 [1];  [2];  [2];  [3];  [2];  [1]
  1. Univ. of Cambridge, Cambridge (United Kingdom)
  2. Texas A & M Univ., College Station, TX (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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Fast ion transport channels at interfaces in thin films have attracted great attention due to a range of potential applications for energy materials and devices, for, solid oxide fuel cells, sensors, and memories. Here, it is shown that in vertical nanocomposite heteroepitaxial films of SrZrO3–RE2O3 (RE = Sm, Eu, Gd, Dy, and Er) the ionic conductivity of the composite can be tuned and strongly enhanced using embedded, stiff, and vertical nanopillars of RE2O3. With increasing lattice constant of RE2O3 from Er2O3 to Sm2O3, it is found that the tensile strain in the SrZrO3 increases proportionately, and the ionic conductivity of the composite increases accordingly, by an order of magnitude. Lastly, the results here conclusively show, for the first time, that strain in films can be effectively used to tune the ionic conductivity of the materials.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1329686
Report Number(s):
LA-UR-15-23679
Journal Information:
Advanced Functional Materials, Vol. 25, Issue 27; ISSN 1616-301X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (9)

Large polarization and dielectric response in epitaxial SrZrO 3 films journal January 2016
Structural phases arising from reconstructive and isostructural transitions in high-melting-point oxides under hydrostatic pressure: A first-principles study journal January 2018
Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface journal October 2018
Strongly enhanced oxygen ion transport through samarium-doped CeO2 nanopillars in nanocomposite films journal October 2015
The role of oxide interfaces in highly confined electronic and ionic conductors journal January 2019
Equilibrium oxygen storage capacity of ultrathin CeO2-δ depends non-monotonically on large biaxial strain journal May 2017
Determining interface structures in vertically aligned nanocomposite films journal June 2019
Ordered Structures with Functional Units as a Paradigm of Material Design journal June 2019
Determining interface structures in vertically aligned nanocomposite films text January 2019

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
material science
thin films
nanocomposite
ionic
strain
ion transport