Suppressed Magnetization in La0.7Ca0.3MnO3/YBa2Cu3O7-&Superlattices
Journal Article
·
· Physical Review B
- Argonne National Laboratory (ANL)
- Universidad Complutense, Spain
- Los Alamos National Laboratory (LANL)
- ORNL
We studied the magnetic properties of La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} superlattices. Magnetometry showed that with increasing YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} layer thickness the saturation magnetization per La{sub 0.7}Ca{sub 0.3}MnO{sub 3} layer decreases. From polarized neutron reflectometry we determined that this magnetization reduction is due to an inhomogenous magnetization depth profile arising from the suppression of magnetization near the La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} interface. Electron energy loss spectroscopy indicates an increased 3d band occupation of the Mn atoms in the La{sub 0.7}Ca{sub 0.3}MnO{sub 3} layers at the interface. Thus, the suppression of ferromagnetic order at the La{sub 0.7}Ca{sub 0.3}MnO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} interface is most likely due to charge transfer between the two materials.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- SC USDOE - Office of Science (SC)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 978085
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: R Vol. 72; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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