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Tunable spin-flop transition in artificial ferrimagnets
- Source :
- Phys. Rev. B 104, 054414 (2021)
- Publication Year :
- 2021
-
Abstract
- Spin-flop transition (SFT) consists in a jump-like reversal of antiferromagnetic magnetic moments into a non-collinear state when the magnetic field increases above the critical value. Potentially the SFT can be utilized in many applications of a rapidly developing antiferromagnetic spintronics. However, the difficulty of using them in conventional antiferromagnets lies in (a) too large switching magnetic fields (b) the need for presence of a magnetic anisotropy, and (c) requirement to apply magnetic field along the correspondent anisotropy axis. In this work we propose to use artificial ferrimagnets in which the spin-flop transition occurs without anisotropy and the transition field can be lowered by adjusting exchange coupling in the structure. This is proved by experiment on artificial Fe-Gd ferrimagnets where usage of Pd spacers allowed us to suppress the transition field by two orders of magnitude.<br />Comment: article, 5 pages, 3 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 104, 054414 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2101.06155
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.104.054414