Abstract
Epitaxial films of multilayers of La 0.67 Ca 0.33 MnO 3 /SrMnO 3 (LCMO/SMO) and the reference single layer have been deposited by pulsed laser deposition on SrTiO 3 (001) substrate allowing us to perform an exhaustive study of the magnetic coupling at the interface of G-type compensated antiferromagnetic (AFM) and double-exchange ferromagnetic (FM). An unexpected exchange bias (EB) effect at the compensated AFM interface under application of an in-plane cooling has been found. The LCMO/SMO multilayers exhibit an exchange bias field of 123 Oe, which vanishes as the temperature rises above 80 K Spin-cluster-like FM /AFM clusters have been deduced to exist at the interface due to the competing types of magnetic order at the interface. A small magnetization has been found above the Curie temperature of the pure LCMO thin films when applied a small field. We speculate that the short-range high-temperature FM order of the Mn3+ and Mn4+ moments above the Curie temperature at the interface gives rise to the magnetic regions that pin the FM LCMO layer as the temperature decreases.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
