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Title: Electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films

Abstract

The electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films is presented. The films were grown on SrTiO{sub 3} using molecular beam epitaxy with post-growth annealing to minimize oxygen vacancies. Insulating behavior is observed from x = 0–0.9, with metallic conduction only present for x = 1.0. While the La-rich compounds exhibit polaron conduction over all temperatures measured, the Sr-rich films exhibit an electronic phase transition within the compositional window of x = 0.49–0.9 as revealed by temperature-dependent resistivity measurements. The transition temperatures are found to decrease with increasing Sr content. The constructed phase diagram is discussed in the context of other 3d e{sub g} perovskite systems including manganites and cobaltites.

Authors:
; ; ; ; ;  [1]
  1. Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104 (United States)
Publication Date:
OSTI Identifier:
22317999
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IRON OXIDES; LANTHANUM; MOLECULAR BEAM EPITAXY; OXYGEN; PEROVSKITE; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; STRONTIUM; STRONTIUM TITANATES; TRANSITION TEMPERATURE; VACANCIES

Citation Formats

Xie, Y. J., Scafetta, M. D., Moon, E. J., Krick, A. L., Sichel-Tissot, R. J., and May, S. J., E-mail: smay@coe.drexel.edu. Electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films. United States: N. p., 2014. Web. doi:10.1063/1.4893139.
Xie, Y. J., Scafetta, M. D., Moon, E. J., Krick, A. L., Sichel-Tissot, R. J., & May, S. J., E-mail: smay@coe.drexel.edu. Electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films. United States. doi:10.1063/1.4893139.
Xie, Y. J., Scafetta, M. D., Moon, E. J., Krick, A. L., Sichel-Tissot, R. J., and May, S. J., E-mail: smay@coe.drexel.edu. Mon . "Electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films". United States. doi:10.1063/1.4893139.
@article{osti_22317999,
title = {Electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films},
author = {Xie, Y. J. and Scafetta, M. D. and Moon, E. J. and Krick, A. L. and Sichel-Tissot, R. J. and May, S. J., E-mail: smay@coe.drexel.edu},
abstractNote = {The electronic phase diagram of epitaxial La{sub 1−x}Sr{sub x}FeO{sub 3} films is presented. The films were grown on SrTiO{sub 3} using molecular beam epitaxy with post-growth annealing to minimize oxygen vacancies. Insulating behavior is observed from x = 0–0.9, with metallic conduction only present for x = 1.0. While the La-rich compounds exhibit polaron conduction over all temperatures measured, the Sr-rich films exhibit an electronic phase transition within the compositional window of x = 0.49–0.9 as revealed by temperature-dependent resistivity measurements. The transition temperatures are found to decrease with increasing Sr content. The constructed phase diagram is discussed in the context of other 3d e{sub g} perovskite systems including manganites and cobaltites.},
doi = {10.1063/1.4893139},
journal = {Applied Physics Letters},
number = 6,
volume = 105,
place = {United States},
year = {Mon Aug 11 00:00:00 EDT 2014},
month = {Mon Aug 11 00:00:00 EDT 2014}
}