Evolution of microstructure, strain and physical properties in oxide nanocomposite films

Chen, Aiping; Weigand, Marcus; Bi, Zhenxing; Zhang, Wenrui; Lü, Xuejie; Dowden, Paul; MacManus-Driscoll, Judith L.; Wang, Haiyan; Jia, Quanxi

doi:10.1038/srep05426

Title: Evolution of microstructure, strain and physical properties in oxide nanocomposite films

Journal Article · Tue Jun 24 00:00:00 EDT 2014 · Scientific Reports

DOI: https://doi.org/10.1038/srep05426 · OSTI ID:1321739

Chen, Aiping ^[1]; Weigand, Marcus ^[1]; Bi, Zhenxing ^[1]; Zhang, Wenrui ^[2]; Lü, Xuejie ^[1]; Dowden, Paul ^[1]; MacManus-Driscoll, Judith L. ^[3]; Wang, Haiyan ^[2]; Jia, Quanxi ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
Texas A & M Univ., College Station, TX (United States). Department of Electrical and Computer Engineering
Univ. of Cambridge (United Kingdom). Department of Materials Science and Metallurgy

Using LSMO:ZnO nanocomposite films as a model system, we have researched the effect of film thickness on the physical properties of nanocomposites. It shows that strain, microstructure, as well as magnetoresistance strongly rely on film thickness. The magnetotransport properties have been fitted by a modified parallel connection channel model, which is in agreement with the microstructure evolution as a function of film thickness in nanocomposite films on sapphire substrates. The strain analysis indicates that the variation of physical properties in nanocomposite films on LAO is dominated by strain effect. These results confirm the critical role of film thickness on microstructures, strain states, and functionalities. Furthermore, it shows that one can use film thickness as a key parameter to design nanocomposites with optimum functionalities.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1321739

Report Number(s):: LA-UR--14-22033

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Vol. 4; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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