@article{d2d3d44463ce467fb8f31a9cff7a252d,
title = "The adsorption-controlled growth of LuFe2O4 by molecular-beam epitaxy",
abstract = "We report the growth of single-phase (0001)-oriented epitaxial films of the purported electronically driven multiferroic, LuFe2O4, on (111) MgAl2O4, (111) MgO, and (0001) 6H-SiC substrates. Film stoichiometry was regulated using an adsorption-controlled growth process by depositing LuFe2O4 in an iron-rich environment at pressures and temperatures where excess iron desorbs from the film surface during growth. Scanning transmission electron microscopy reveals reaction-free film-substrate interfaces. The magnetization increases rapidly below 240K, consistent with the paramagnetic-to-ferrimagnetic phase transition of bulk LuFe2O4. In addition to the ∼0.35eV indirect band gap, optical spectroscopy reveals a 3.4eV direct band gap at the gamma point.",
author = "Brooks, {Charles M.} and Rajiv Misra and Mundy, {Julia A.} and Zhang, {Lei A.} and Holinsworth, {Brian S.} and O'Neal, {Kenneth R.} and Tassilo Heeg and Willi Zander and J. Schubert and Musfeldt, {Janice L.} and Liu, {Zi Kui} and Muller, {David A.} and Peter Schiffer and Schlom, {Darrell G.}",
note = "Funding Information: Research supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, and Engineering under Award Nos. DE-SC0002334 (sample synthesis and characterization) and DE-FG02-01ER45885 (spectroscopy). C.M.B. acknowledges stipend support from the National Science Foundation through the MRSEC program (DMR-0820404). J.A.M. acknowledges financial support from a National Defense Science & Engineering Graduate Fellowship. Electron microscopy facility support through the NSF MRSEC program (DMR 1120296) and NSF IMR-0417392. We thank P. Chen for useful discussions.",
year = "2012",
month = sep,
day = "24",
doi = "10.1063/1.4755765",
language = "English (US)",
volume = "101",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "13",
}