Journal
PHYSICAL REVIEW LETTERS
Volume 122, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.027202
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Funding
- European Union's Horizon 2020 research and innovation program under FET-Open Grant [713481]
- European Research Council ERC [339813]
- Ministry of Education and Science of the Russian Federation [14.Z50.31.0034]
- Russian Science Foundation [17-12-01333]
- National Key R&D Program of China [YS2018YFB110012]
- National Natural Science Foundation of China (NSFC) [61522504, 11604123, 61432007]
- Guangdong Provincial Innovation and Entrepreneurship Project [2016ZT06D081]
- de Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- European Research Council (ERC) [339813] Funding Source: European Research Council (ERC)
- Russian Science Foundation [17-12-01333] Funding Source: Russian Science Foundation
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A heat-assisted route for subnanosecond magnetic recording is discovered for the dielectric bismuth-substituted yttrium iron garnet, known for possessing small magnetic damping. The experiments and simulations reveal that the route involves nonlinear magnetization precession, triggered by a transient thermal modification of the growth-induced crystalline anisotropy in the presence of a fixed perpendicular magnetic field. The pathway is rendered robust by the damping becoming anomalously large during the switching process. Subnanosecond deterministic magnetization reversal was achieved within just one-half of a precessional period, and this mechanism should be possible to implement in any material with suitably engineered dissimilar thermal derivatives of magnetization and anisotropy.
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