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Title: Reversed Remanent Magnetic Configuration in Epitaxial La 1-xSrxMnO3 Films

Abstract

The polar discontinuity which can occur at oxide interfaces can modify the properties of oxide thin films. In such a system, an unusual reversed orientation of the remanent magnetic state was observed recently for La{sub 0.7}Sr{sub 0.3}MnO{sub 3} on Nb-doped SrTiO{sub 3}(0 0 1) deposited via pulsed laser deposition (Lee et al 2010 Phys. Rev. Lett. 105 257204). Here, we report on a similar effect for La{sub 0.7}Sr{sub 0.3}MnO{sub 3} grown via molecular beam epitaxy, a deposition method with different growth kinetics, onto both Nb-doped and undoped SrTiO{sub 3} (STO) substrates. The reversed magnetic state occurred in both samples, while enriched Mn{sup 3+} regions (intermediate layer) are slightly different. Intriguingly, the onset of the reversed remanent state occurred at different temperatures: {approx}125 K for the Nb : STO substrate and {approx}240 K for the undoped STO substrate. Our results point to an additional mechanism for controlling the magnetism in mixed-valence oxide films.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1042028
Report Number(s):
BNL-97706-2012-JA
Journal ID: ISSN 0022-3727; TRN: US201212%%439
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Journal of Physics D: Applied Physics
Additional Journal Information:
Journal Volume: 44; Journal Issue: 24; Journal ID: ISSN 0022-3727
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CONFIGURATION; DEPOSITION; KINETICS; LASERS; MAGNETISM; MOLECULAR BEAM EPITAXY; ORIENTATION; OXIDES; SUBSTRATES; THIN FILMS

Citation Formats

Lee, J, Kao, C, Santos, T, Negusse, E, and Arena, D. Reversed Remanent Magnetic Configuration in Epitaxial La 1-xSrxMnO3 Films. United States: N. p., 2011. Web. doi:10.1088/0022-3727/44/24/245002.
Lee, J, Kao, C, Santos, T, Negusse, E, & Arena, D. Reversed Remanent Magnetic Configuration in Epitaxial La 1-xSrxMnO3 Films. United States. https://doi.org/10.1088/0022-3727/44/24/245002
Lee, J, Kao, C, Santos, T, Negusse, E, and Arena, D. 2011. "Reversed Remanent Magnetic Configuration in Epitaxial La 1-xSrxMnO3 Films". United States. https://doi.org/10.1088/0022-3727/44/24/245002.
@article{osti_1042028,
title = {Reversed Remanent Magnetic Configuration in Epitaxial La 1-xSrxMnO3 Films},
author = {Lee, J and Kao, C and Santos, T and Negusse, E and Arena, D},
abstractNote = {The polar discontinuity which can occur at oxide interfaces can modify the properties of oxide thin films. In such a system, an unusual reversed orientation of the remanent magnetic state was observed recently for La{sub 0.7}Sr{sub 0.3}MnO{sub 3} on Nb-doped SrTiO{sub 3}(0 0 1) deposited via pulsed laser deposition (Lee et al 2010 Phys. Rev. Lett. 105 257204). Here, we report on a similar effect for La{sub 0.7}Sr{sub 0.3}MnO{sub 3} grown via molecular beam epitaxy, a deposition method with different growth kinetics, onto both Nb-doped and undoped SrTiO{sub 3} (STO) substrates. The reversed magnetic state occurred in both samples, while enriched Mn{sup 3+} regions (intermediate layer) are slightly different. Intriguingly, the onset of the reversed remanent state occurred at different temperatures: {approx}125 K for the Nb : STO substrate and {approx}240 K for the undoped STO substrate. Our results point to an additional mechanism for controlling the magnetism in mixed-valence oxide films.},
doi = {10.1088/0022-3727/44/24/245002},
url = {https://www.osti.gov/biblio/1042028}, journal = {Journal of Physics D: Applied Physics},
issn = {0022-3727},
number = 24,
volume = 44,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 2011},
month = {Sat Dec 31 00:00:00 EST 2011}
}