Synthesis of the superlattice complex oxide Sr5Bi4Ti8027 and its band gap behavior

Zurbuchen, M.A.; Podraza, N.J.; Schubert, J.; Schlom, D.G.; Jia, Y.

doi:10.1063/1.4722942

Journal Article

Synthesis of the superlattice complex oxide Sr5Bi4Ti8027 and its band gap behavior

Zurbuchen, M. A. ; Podraza, N. J. ; Schubert, J.FZJ* ; Jia, Y. ; Schlom, D. G.

2012
American Institute of Physics Melville, NY

Applied physics letters 100, 223109 (2012) [10.1063/1.4722942]

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Please use a persistent id in citations: http://hdl.handle.net/2128/7576 doi:10.1063/1.4722942

Abstract: The n = 8 member of the Aurivillius complex oxide superlattice series of phases, Sr5Bi4Ti8O27, was synthesized by pulsed-laser deposition on (001) SrTiO3 single-crystal substrates. This phase, with a c-axis lattice parameter of 7.25 +/- 0.036 nm, and its purity were confirmed by x-ray diffraction and transmission electron microscopy. The film is observed to be single phase and free of intergrowths of other-n members of the series. Using spectroscopic ellipsometry, Sr5Bi4Ti8O27 was determined to exhibit an indirect band gap of 3.53 eV at room temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4722942]

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Physics, Applied

Note: This work was supported by the Defense Advanced Research Projects Agency (DARPA) and the U.S. Army Aviation and Missile Research, Development, and Engineering Center (AMRDEC).<SUP>39</SUP> Sample preparation was performed by the UCLA Nanoelectronics Research Facility, and microscopy at the UCLA California Nanosystems Institute's (CNSI's) Electron Imaging Center for Nanomachines (EICN).

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