Tetragonal heusler compounds for spintronics
Felser C, Alijani V, Winterlik J, Chadov S, Nayak AK (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 49
Pages Range: 682-685
Article Number: 6416982
Journal Issue: 2
DOI: 10.1109/TMAG.2012.2223661
Abstract
With respect to the requirements of spin torque transfer (STT) materials, one the most promising materials families are the tunable tetragonal Heusler compounds based on rm Mn2YZ (Y=rm Co,rm Fe,rm Ni,rm Rh,\ldots; Z=rm Al, Ga, Sn). They form the inverse cubic Heusler structure with three distinct magnetic sublattices, which allows a fine tuning of the magnetic properties. Starting with the stoichiometric rm Mn3rm Ga compound, we explored the complete phase diagram of rm Mn3-rm xY-rm xZ (Y=rm Co, Fe, Ni and Z=rm Ga ). All series exhibit thermally stable magnetic properties. As we demonstrate, rm Mn3-rm xrm Fe-rm xrm Ga series, which are tetragonal over the whole range of compositions, are good as hard magnets, whereas magnetically more weak rm Mn3-rm xrm Ni-rm xrm Ga series exhibit the shape memory phenomenon. Even more surprising properties are found in the Co-based series. On the one hand, the Co-poor (rm x<0.5) rm Mn3-rm xrm Co-rm xrm Ga tetragonal alloys are well-suited for the STT. At the same time, the Co-rich cubic series (0.5 APA: Felser, C., Alijani, V., Winterlik, J., Chadov, S., & Nayak, A.K. (2013). Tetragonal heusler compounds for spintronics. IEEE Transactions on Magnetics, 49(2), 682-685. https://doi.org/10.1109/TMAG.2012.2223661 MLA: Felser, Claudia, et al. "Tetragonal heusler compounds for spintronics." IEEE Transactions on Magnetics 49.2 (2013): 682-685. BibTeX: DownloadInvolved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Johannes Gutenberg-Universität Mainz (JGU)
Germany (DE)
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