The effect of interfacial charge transfer on ferromagnetism in perovskite oxide superlattices

Journal Article · Sun Jan 01 04:00:00 EST 2012 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3674325· OSTI ID:22036796

Yang, F; Gu, M; Takamura, Y ^[1]; Arenholz, E ^[2]; Browning, N D ^[1]

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1. Department of Chemical Engineering and Materials Science, University of California, Davis, Davis, California 95616 (United States)
2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

The structural, magnetic, and electrical properties of superlattices composed of the ferromagnetic/metal La{sub 0.7}Sr{sub 0.3}MnO{sub 3} and non-magnetic/metal La{sub 0.5}Sr{sub 0.5}TiO{sub 3} grown on (001)-oriented SrTiO{sub 3} substrates have been investigated. Using a combination of bulk magnetometry, soft x-ray magnetic spectroscopy, and scanning transmission electron microscopy, we demonstrate that robust ferromagnetic properties can be maintained in this superlattice system where charge transfer at the interfaces is minimized. Therefore, ferromagnetism can be controlled effectively through the chemical identity and the thickness of the individual superlattice layers.

• OSTI ID: 22036796
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 1 Vol. 111; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHARGE EXCHANGE
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
FERROMAGNETIC MATERIALS
FERROMAGNETISM
INTERFACES
LANTHANUM COMPOUNDS
LAYERS
MANGANATES
SCANNING ELECTRON MICROSCOPY
SOFT X RADIATION
STRONTIUM TITANATES
SUBSTRATES
SUPERLATTICES
TRANSMISSION ELECTRON MICROSCOPY