Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices
- ORNL
- Lawrence Berkeley National Laboratory (LBNL)
The structural, magnetic, and magnetotransport properties of La0.7Sr0.3FeO3 (LSFO)/La0.7Sr0.3MnO3 (LSMO) perovskite oxide superlattices were determined as a function of sublayer thickness and temperature. The properties of the ferromagnetic LSMO layers gradually approach the case of the LSFO/LSMO solid solution with decreasing superlattice period, namely decreasing saturation magnetization and Curie temperature, and increasing resistivity. By contrast, the N el temperature of the antiferromagnetic LSFO layer depends weakly on sublayerthickness and the orientation of the Fe moments differs from the solid solution and single layer LSFO films irrespective of sublayer thickness. This diverging behavior illustrates the delicate balance between exchange coupling, charge transfer, and long‐range interactions, and providesan interesting means to control of the properties of oxide superlattices.
- Research Organization:
- Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences
- Sponsoring Organization:
- SC USDOE - Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 967982
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 18 Vol. 80; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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