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Title: Thickness-dependent magnetic and electrical transport properties of epitaxial La 0.7Sr 0.3CoO 3 films

The thickness-dependent magnetic and electrical transport properties of nearly strain-free La 0.7Sr 0.3CoO 3 (LSCO) films grown on (001)-oriented (LaAlO 3 ) 0.3 (Sr 2AlTaO 6) 0.7 substrates were systematically studied. A crossover from ferromagnetic/metallic to non-magnetic/insulating behavior occurs at a critical thickness (~8 nm) that is significantly smaller than LSCO films under larger strains in reported literature. X-ray absorption measurements revealed that the difference of functional properties at reduced film thicknesses was accompanied by changes in the valence state of Co ions at the film/substrate interface.
Authors:
 [1] ; ORCiD logo [1] ;  [1] ;  [1] ; ORCiD logo [2] ;  [2] ; ORCiD logo [1]
  1. Univ. of California, Davis, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Published Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 7; Journal Issue: 4; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1361811
Alternate Identifier(s):
OSTI ID: 1379789; OSTI ID: 1421016

Li, Binzhi, Chopdekar, Rajesh V., Kane, Alexander M., Hoke, Kyle, N’Diaye, Alpha T., Arenholz, Elke, and Takamura, Yayoi. Thickness-dependent magnetic and electrical transport properties of epitaxial La0.7Sr0.3CoO3 films. United States: N. p., Web. doi:10.1063/1.4979921.
Li, Binzhi, Chopdekar, Rajesh V., Kane, Alexander M., Hoke, Kyle, N’Diaye, Alpha T., Arenholz, Elke, & Takamura, Yayoi. Thickness-dependent magnetic and electrical transport properties of epitaxial La0.7Sr0.3CoO3 films. United States. doi:10.1063/1.4979921.
Li, Binzhi, Chopdekar, Rajesh V., Kane, Alexander M., Hoke, Kyle, N’Diaye, Alpha T., Arenholz, Elke, and Takamura, Yayoi. 2017. "Thickness-dependent magnetic and electrical transport properties of epitaxial La0.7Sr0.3CoO3 films". United States. doi:10.1063/1.4979921.
@article{osti_1361811,
title = {Thickness-dependent magnetic and electrical transport properties of epitaxial La0.7Sr0.3CoO3 films},
author = {Li, Binzhi and Chopdekar, Rajesh V. and Kane, Alexander M. and Hoke, Kyle and N’Diaye, Alpha T. and Arenholz, Elke and Takamura, Yayoi},
abstractNote = {The thickness-dependent magnetic and electrical transport properties of nearly strain-free La0.7Sr0.3CoO3 (LSCO) films grown on (001)-oriented (LaAlO3 ) 0.3 (Sr2AlTaO6)0.7 substrates were systematically studied. A crossover from ferromagnetic/metallic to non-magnetic/insulating behavior occurs at a critical thickness (~8 nm) that is significantly smaller than LSCO films under larger strains in reported literature. X-ray absorption measurements revealed that the difference of functional properties at reduced film thicknesses was accompanied by changes in the valence state of Co ions at the film/substrate interface.},
doi = {10.1063/1.4979921},
journal = {AIP Advances},
number = 4,
volume = 7,
place = {United States},
year = {2017},
month = {4}
}

Works referenced in this record:

Magnetic and Transport Properties of the System La1-xSrxCoO3-δ (0 < x ≤ 0.50)
journal, September 1995
  • Senarı́s-Rodrıiguez, M.; Goodenough, J.
  • Journal of Solid State Chemistry, Vol. 118, Issue 2, p. 323-336
  • DOI: 10.1006/jssc.1995.1351