New strain states and radical property tuning of metal oxides using a nanocomposite thin film approach
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
Cited by: 33 works
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