@article{c28445f39dd5472795e2136ab21bfdd2,
title = "Coupling of strain, stress, and oxygen non-stoichiometry in thin film Pr0.1Ce0.9O2-δ",
abstract = "Stress and strain in thin films of Pr0.1Ce0.9O2-δ, supported on yttria stabilized zirconia (YSZ) and sapphire substrates, induced by large deviations from oxygen stoichiometry (δ = 0) were investigated by in situ high temperature X-ray diffraction and wafer curvature studies. The measured stresses and strains were correlated with change in δ, measured in situ using optical transmission spectroscopy of defect centers in the films and compared with prior chemical capacitance studies. The coefficient of chemical expansion and elastic modulus values for the films were found to be 18% less than, and 16% greater than in the bulk, respectively. Irreproducible stress and strain during cycling on YSZ substrates was observed and related to microstructural changes as observed by TEM. The enthalpy of defect formation was found to be similar for films supported on sapphire and YSZ, and appeared to decrease with tensile stress, and increase with compressive stress. Larger stresses observed for YSZ supported films as compared to sapphire supported films were found and accounted for by the difference in film orientations.",
author = "J. Sheth and D. Chen and Kim, {J. J.} and Bowman, {W. J.} and Peter Crozier and Tuller, {H. L.} and Misture, {S. T.} and S. Zdzieszynski and Sheldon, {B. W.} and Bishop, {S. R.}",
note = "Funding Information: D. Chen, H. L. Tuller and S. R. Bishop acknowledge support by the US Department of Energy, Basic Energy Sciences, Grant No. DE-SC0002633 at MIT. Tuller and Bishop further acknowledge the hospitality provided at Kyushu University by the Progress-100 program during the preparation of this work. Bishop acknowledges partial support from the International Institute for Carbon Neutral Research (I2CNER). J. Sheth and B. W. Sheldon acknowledge financial support from US NSF DMR-1410946. W. J. Bowman would like to acknowledge financial support of the US National Science Foundation's Graduate Research Fellowship Program under grant number DGE-1311230. P. A. Crozier and W. J. Bowman acknowledge financial support from US NSF DMR-1308085. W. J. Bowman and P. A. Crozier acknowledge access to the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University. Publisher Copyright: {\textcopyright} 2016 The Royal Society of Chemistry.",
year = "2016",
month = sep,
day = "28",
doi = "10.1039/c6nr04083g",
language = "English (US)",
volume = "8",
pages = "16499--16510",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "36",
}