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Title: Epitaxially stabilized growth of orthorhombic LuScO{sub 3} thin films

Abstract

Metastable lutetium scandate (LuScO{sub 3}) thin films with an orthorhombic perovskite structure have been prepared by molecular-beam epitaxy and pulsed-laser deposition on NdGaO{sub 3}(110) and DyScO{sub 3}(110) substrates. Stoichiometry and crystallinity were investigated using Rutherford backscattering spectrometry/channeling, x-ray diffraction, and transmission electron microscopy. The results indicate that LuScO{sub 3}, which normally only exists as a solid solution of Sc{sub 2}O{sub 3} and Lu{sub 2}O{sub 3} with the cubic bixbyite structure, can be grown in the orthorhombically distorted perovskite structure. Rocking curves as narrow as 0.05 deg. were achieved. A critical film thickness of approximately 200 nm for the epitaxially stabilized perovskite polymorph of LuScO{sub 3} on NdGaO{sub 3}(110) substrates was determined.

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2];  [3]
  1. Institute of Bio- and Nanosystems (IBN1-IT), Forschungszentrum Juelich GmbH, 52425 Juelich (Germany) and Centre of Nanoelectronic Systems for Information Technology (CNI), Forschungszentrum Juelich GmbH, 52425 Juelich (Germany)
  2. (IFF), Forschungszentrum Juelich GmbH, 52425 Juelich (Germany) and Ernst-Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Juelich GmbH, 52425 Juelich (Germany)
  3. (United States)
Publication Date:
OSTI Identifier:
20971917
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 19; Other Information: DOI: 10.1063/1.2737136; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRYSTAL GROWTH; ENERGY BEAM DEPOSITION; LASER RADIATION; LUTETIUM OXIDES; MOLECULAR BEAM EPITAXY; NEUTRON DIFFRACTION; ORTHORHOMBIC LATTICES; PEROVSKITE; PULSED IRRADIATION; RUTHERFORD BACKSCATTERING SPECTROSCOPY; SCANDIUM OXIDES; SOLID SOLUTIONS; STOICHIOMETRY; SUBSTRATES; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Heeg, T., Roeckerath, M., Schubert, J., Zander, W., Buchal, Ch., Chen, H. Y., Jia, C. L., Jia, Y., Adamo, C., Schlom, D. G., Institute of Solid State Research, and Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-5005. Epitaxially stabilized growth of orthorhombic LuScO{sub 3} thin films. United States: N. p., 2007. Web. doi:10.1063/1.2737136.
Heeg, T., Roeckerath, M., Schubert, J., Zander, W., Buchal, Ch., Chen, H. Y., Jia, C. L., Jia, Y., Adamo, C., Schlom, D. G., Institute of Solid State Research, & Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-5005. Epitaxially stabilized growth of orthorhombic LuScO{sub 3} thin films. United States. doi:10.1063/1.2737136.
Heeg, T., Roeckerath, M., Schubert, J., Zander, W., Buchal, Ch., Chen, H. Y., Jia, C. L., Jia, Y., Adamo, C., Schlom, D. G., Institute of Solid State Research, and Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-5005. Mon . "Epitaxially stabilized growth of orthorhombic LuScO{sub 3} thin films". United States. doi:10.1063/1.2737136.
@article{osti_20971917,
title = {Epitaxially stabilized growth of orthorhombic LuScO{sub 3} thin films},
author = {Heeg, T. and Roeckerath, M. and Schubert, J. and Zander, W. and Buchal, Ch. and Chen, H. Y. and Jia, C. L. and Jia, Y. and Adamo, C. and Schlom, D. G. and Institute of Solid State Research and Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802-5005},
abstractNote = {Metastable lutetium scandate (LuScO{sub 3}) thin films with an orthorhombic perovskite structure have been prepared by molecular-beam epitaxy and pulsed-laser deposition on NdGaO{sub 3}(110) and DyScO{sub 3}(110) substrates. Stoichiometry and crystallinity were investigated using Rutherford backscattering spectrometry/channeling, x-ray diffraction, and transmission electron microscopy. The results indicate that LuScO{sub 3}, which normally only exists as a solid solution of Sc{sub 2}O{sub 3} and Lu{sub 2}O{sub 3} with the cubic bixbyite structure, can be grown in the orthorhombically distorted perovskite structure. Rocking curves as narrow as 0.05 deg. were achieved. A critical film thickness of approximately 200 nm for the epitaxially stabilized perovskite polymorph of LuScO{sub 3} on NdGaO{sub 3}(110) substrates was determined.},
doi = {10.1063/1.2737136},
journal = {Applied Physics Letters},
number = 19,
volume = 90,
place = {United States},
year = {Mon May 07 00:00:00 EDT 2007},
month = {Mon May 07 00:00:00 EDT 2007}
}