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Updated: Feb 18, 2026
08:45
Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
10.2K
Engineered superlattices with crossover from decoupled to synthetic ferromagnetic behavior
Rajesh V Chopdekar1, Vivek K Malik1, Alexander M Kane1
1Department of Materials Science and Engineering, University of California, Davis, Davis, CA 95616, United States of America.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 17, 2017
Summary
Interfacial charge transfer in La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 superlattices strongly influences magnetic coupling. Sublayer thickness controls magnetic properties, enabling atomic-scale tailoring of functional materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Ferromagnetic superlattices offer tunable magnetic properties.
- Understanding interfacial effects is crucial for designing advanced magnetic materials.
Purpose of the Study:
- Investigate interfacial charge transfer in La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 superlattices.
- Determine the impact of sublayer thickness on magnetic interactions and properties.
Main Methods:
- Fabrication of La0.7Sr0.3MnO3/La0.7Sr0.3CoO3 ferromagnetic superlattices.
- Element-specific soft x-ray magnetic spectroscopy to probe electronic structure and magnetic coupling.
Main Results:
- Electronic structure modifications extend 5-6 unit cells from the interface.
- Strong magnetic coupling observed for thin sublayers, leading to a synthetic ferromagnet.
- Saturation magnetization and coercivity are sensitive to sublayer thickness.
- Thicker sublayers result in magnetically decoupled layers with independent magnetic transitions.
Conclusions:
- Interfacial charge transfer significantly impacts magnetic coupling in these superlattices.
- Sublayer thickness is a critical parameter for controlling magnetic properties at the atomic scale.
- Perovskite oxide interfaces provide a platform for tailoring functional material properties.
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