Abstract
High-quality epitaxial growth of intermetallic MnPt films on oxides is achieved, with potential for multiferroic heterostructure applications. Antisite-stabilized spin-flipping induces ferromagnetism in MnPt films, although it is robustly antiferromagnetic in bulk. Moreover, highly ordered antiferromagnetic MnPt films exhibit superiorly large exchange coupling with a ferromagnetic layer.
Original language | English |
---|---|
Pages (from-to) | 118-123 |
Number of pages | 6 |
Journal | Advanced Materials |
Volume | 28 |
Issue number | 1 |
DOIs | |
State | Published - Jan 6 2016 |
Funding
The authors dedicate this work to the memory of our friend and collaborator, Dr. Michael Biegalski. We acknowledge Prof. R. Ramesh (U.C. Berkeley) for continued advice and Prof. J. M. D. Coey (Trinity College, Ireland) and for illuminating discussions. Dr. X Renshaw Wang is acknowledged for help with the illustrations. This work (Z.L.) was sponsored by the Laboratory Directed Research and Development (LDRD) Program of ORNL managed by UT-Battelle, LLC; by the US Department of Energy (DOE), Offi ce of Science, Basic Energy Sciences, Materials Sciences and Engineering Division (L.L., A.S.S., T.Z.W., H.N.L., J.A.N., K.W., and T.L.M.); and under US DOE grant DE-SC0002136 (A.T.W.). S.S, C.M., and Z.L. thank the support from the Natural Science Foundation (NSF) with Grant Nos. CHE-1230924 and CMMI-1333999. First-principle calculations were carried out using NERSC resources supported by the DOE Offi ce of Science under contract No. DE-AC02-05CH11231. Part of the work was performed at ORNL''s Center for Nanophase Materials Sciences, and the Spallation Neutron Source, which are DOE Offi ce of Science User Facilities. The Advanced Light Source is supported by the Director, Offi ce of Science, Offi ce of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
Keywords
- exchange bias
- ferroelectric oxides
- ferromagnetism
- heterostructures
- multiferroics