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Title: New strain states and radical property tuning of metal oxides using a nanocomposite thin film approach

Journal Article · · APL Materials
DOI:https://doi.org/10.1063/1.4919059· OSTI ID:1179645

Auxetic-like strain states were generated in self-assembled nanocomposite thin films of (Ba₀̣₆Sr₀̣₄TiO₃)1-x – (Sm₂O₃)x (BSTO - SmO). A switch from auxetic-like to elastic-like strain behavior was observed for x > 0.50, when the SmO switched from being nanopillars in the BSTO matrix to being the matrix with BSTO nanopillars embedded in it. A simple model was adopted to explain how in-plane strain varies with x. At high x (0.75), strongly enhanced ferroelectric properties were obtained compared to pure BSTO films. The nanocomposite method represents a powerful new way to tune the properties of a wide range of strongly correlated metal oxides whose properties are very sensitive to strain.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25936; DMR0846504; DMR1401266; ERC-2009-AdG-247276-NOVOX; AC52-06NA25396
OSTI ID:
1179645
Alternate ID(s):
OSTI ID: 1208851; OSTI ID: 1234659; OSTI ID: 1421209
Report Number(s):
LA-UR-15-25931
Journal Information:
APL Materials, Journal Name: APL Materials Vol. 3 Journal Issue: 6; ISSN 2166-532X
Publisher:
American Institute of PhysicsCopyright 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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