Abstract
The heterointerfacing of different materials with competing magnetic orders forms the basis for today’s spintronic devices, however materials compatibility has remained a major limitation to the conception of new multilayered systems. Here, we uncover a multilayer of competing magnetic orders within a single layer of FeRh after low-energy He-ion irradiation: metamagnetic, ferromagnetic, and spin glass. Polarized neutron reflectometry, irradiation modeling, and density functional theory calculations reveal a direct correlation between the disorder concentration, the depth-dependent magnetic ordering, and the onset of the metamagnetic transition. Such a heterostructure opens the door to new paradigms in antiferromagnetic electronics and ultra-low-power magnetization controllability. This unlocks the possible use of intrinsic magnetism as a state-variable for logical computation via a top-down approach to the multilayering/control of magnetic order in a single metamagnetic thin film.
| Original language | English |
|---|---|
| Pages (from-to) | 106-112 |
| Number of pages | 7 |
| Journal | Materials Research Letters |
| Volume | 6 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2 2018 |
Funding
This work was supported by the Scientific User Facilities Division, the Office of Basic Energy Sciences (BES), US Department of Energy (DOE), (S.P.B., V.L., C.R.), and by Office of Naval Research through the NRL basic research program (S.P.B., C.C., and I.I.M.). This effort was also supported in part by the US Department of Energy (DOE), Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division, (A.H.).
Keywords
- Antiferromagnetic
- Irradiation
- Magnetic ordering
- Metamagnetic
- Phase transition
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