@article{e85d99c56ad7414aa037f39dcfcd3153,
title = "Stabilisation of Fe 2 O 3 -rich Perovskite Nanophase in Epitaxial Rare-earth Doped BiFeO 3 Films",
abstract = "Researchers have demonstrated that BiFeO3 exhibits ferroelectric hysteresis but none have shown a strong ferromagnetic response in either bulk or thin film without significant structural or compositional modification. When remanent magnetisations are observed in BiFeO3 based thin films, iron oxide second phases are often detected. Using aberration-corrected scanning transmission electron microscopy, atomic resolution electron energy loss spectrum-mapping and quantitative energy dispersive X-ray spectroscopy analysis, we reveal the existence of a new Fe2 O3 -rich perovskite nanophase, with an approximate formula (Fe0.6 Bi0.25 Nd0.15)3+ Fe3+ O3, formed within epitaxial Ti and Nd doped BiFeO3 perovskite films grown by pulsed laser deposition. The incorporation of Nd and Bi ions on the A-site and coherent growth with the matrix stabilise the Fe2 O3 -rich perovskite phase and preliminary density functional theory calculations suggest that it should have a ferrimagnetic response. Perovskite-structured Fe2 O3 has been reported previously but never conclusively proven when fabricated at high-pressure high-temperature. This work suggests the incorporation of large A-site species may help stabilise perovskite-structured Fe2 O3. This finding is therefore significant not only to the thin film but also to the high-pressure community.",
author = "Huairuo Zhang and Reaney, {Ian M.} and Marincel, {Daniel M.} and Susan Trolier-Mckinstry and Ramasse, {Quentin M.} and Ian Maclaren and Findlay, {Scott D.} and Fraleigh, {Robert D.} and Ross, {Ian M.} and Shunbo Hu and Wei Ren and {Mark Rainforth}, W.",
note = "Funding Information: H.Z., I.M.R. and W.M.R. are grateful to the Engineering and Physical Sciences Research Council for funding this work via grant EP/I038934/1, as well as to the EPSRC for the support of the SuperSTEM facility. D.M.M. and S.T.M. gratefully acknowledge financial support from National Science Foundation Grant 1005771, as well as a National Security Science and Engineering Faculty Fellowship. I.M. gratefully acknowledges the provision of the JEOL ARM200F by SUPA and the University of Glasgow. S.D.F. gratefully acknowledges the support of the Discovery Projects funding scheme of the Australian Research Council (Project no. DP110101570). W.R. gratefully acknowledges the support of the National Key Basic Research Program of China (Grant No. 2015CB921600), the National Natural Science Foundation of China (NSFC, Grant No. 11274222), the QiMingXing Project (Project No. 14QA1402000) from the Shanghai Municipal Science and Technology Commission, the Eastern Scholar Program, and the Shuguang Program (Grant No. 12SG34) from the Shanghai Municipal Education Commission.",
year = "2015",
month = aug,
day = "14",
doi = "10.1038/srep13066",
language = "English (US)",
volume = "5",
journal = "Scientific reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
}