Reversed remanent magnetic configuration in epitaxial La{sub 1-x}Sr{sub x}MnO3 films.
- Center for Nanoscale Materials
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.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1018502
- Report Number(s):
- ANL/CNM/JA-69172
- Journal Information:
- J. Phys. D, Journal Name: J. Phys. D Journal Issue: 24 ; Jun. 22, 2011 Vol. 44; ISSN 0022-3727
- Country of Publication:
- United States
- Language:
- ENGLISH
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