Magnetic Damping in Epitaxial 
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 Alloyed with Vanadium and Aluminum

Smith, D. A.; Rai, Anish; Lim, Youngmin; Hartnett, Timothy Q.; Sapkota, Arjun; Srivastava, Abhishek; Mewes, Claudia; Jiang, Zijian; Clavel, Michael; Hudait, Mantu K.; Viehland, Dwight; Heremans, J. J.; Balachandran, Prasanna V.; Mewes, Tim; Emori, Satoru

doi:10.1103/physrevapplied.14.034042

Cited by 20 publications

(10 citation statements)

References 64 publications

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“…For large-scale integration, these materials should be CMOS-technology-compatible polycrystalline metal thin films that can be grown on top of an arbitrary template without significant thermal processing. Alloys based on 3d transition metals such as CoxFe1-x, FexV1-x and Fe-Al [65], [66], [67] are a particularly relevant material class, as are some Co2Mn based Heusler compounds [68], [69].…”

Section: Metallic Ferromagnets With Ultralow Damping For Spinwave Wav...mentioning

confidence: 99%

“…For a similar reason, FexV1-x also has a low intrinsic damping value a < 0.0025 over a wide compositional range, where 𝜇 ! 𝑀 " can be tuned between 0.8 and 2.1 T to suit a particular application [66], [67]. The high 𝑀 " of polycrystalline Co25Fe75 is particularly useful for spin-wave computation applications since it leads to high dipolar-exchange spin-wave group velocities 𝑣 # ≈ 16 km/s at a wave vector of 𝑘 ≈ 0.5 µm -1 (see the dispersion relation in Fig.…”

Section: Metallic Ferromagnets With Ultralow Damping For Spinwave Wav...mentioning

confidence: 99%

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Advances in Magnetics Roadmap on Spin-Wave Computing

et al. 2022

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Magnonics addresses the physical properties of spin waves and utilizes them for data processing. Scalability down to atomic dimensions, operation in the GHz-to-THz frequency range, utilization of nonlinear and nonreciprocal phenomena, and compatibility with CMOS are just a few of many advantages offered by magnons. Although magnonics is still primarily positioned in the academic domain, the scientific and technological challenges of the field are being extensively investigated, and many proof-of-concept prototypes have already been realized in laboratories. This roadmap is a product of the collective work of many authors that covers versatile spin-wave computing approaches, conceptual building blocks, and underlying physical phenomena. In particular, the roadmap discusses the computation operations with Boolean digital data, unconventional approaches like neuromorphic computing, and the progress towards magnon-based quantum computing. The article is organized as a collection of sub-sections grouped into seven large thematic sections. Each sub-section is prepared by one or a group of authors and concludes with a brief description of current challenges and the outlook of further development for each research direction.

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Section: Metallic Ferromagnets With Ultralow Damping For Spinwave Wav...mentioning

confidence: 99%

Section: Metallic Ferromagnets With Ultralow Damping For Spinwave Wav...mentioning

confidence: 99%

Advances in Magnetics Roadmap on Spin-Wave Computing

et al. 2022

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“…The details of the measurement method are found in Refs. 18,34 . Figure 3(a) shows the frequency dependence of half-width-at-halfmaximum (HWHM) linewidth Δ𝐻 OOP for selected thicknesses from both sample series.…”

Section: Intrinsic Gilbert Damping Probed By Out-of-plane Fmrmentioning

confidence: 99%

“…Damping due to eddy current is estimated to make up less than 10% of the total measured damping parameter 34 and is ignored here. Since we used a shorted waveguide in our setup, the radiative damping does not apply here.…”

Section: Intrinsic Gilbert Damping Probed By Out-of-plane Fmrmentioning

confidence: 99%

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Room-Temperature Intrinsic and Extrinsic Damping in Polycrystalline Fe Thin Films

Wu,

Smith,

Nakarmi

et al. 2021

Preprint

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We examine magnetic relaxation in polycrystalline Fe films with strong and weak crystallographic texture. Out-of-plane ferromagnetic resonance (FMR) measurements reveal Gilbert damping parameters of ≈ 0.0024 for Fe films with thicknesses of 4-25 nm, regardless of their microstructural properties. The remarkable invariance with film microstructure strongly suggests that intrinsic Gilbert damping in polycrystalline Fe is a local property of nanoscale crystal grains, with limited impact from grain boundaries and film roughness. By contrast, the in-plane FMR linewidths of the Fe films exhibit distinct nonlinear frequency dependences, indicating the presence of strong extrinsic damping. To fit our experimental data, we have used a grain-to-grain two-magnon scattering model with two types of correlation functions aimed at describing the spatial distribution of inhomogeneities in the film. However, neither of the two correlation functions is able to reproduce the experimental data quantitatively with physically reasonable parameters. Our finding points to the need to further examine the fundamental impact of film microstructure on extrinsic damping.

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Damping capacity and mechanical properties of Fe3Cr2NiCuAl medium entropy alloys by tuning phase constituents

Han

Wang

et al. 2022

Journal of Alloys and Compounds

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Magnetic Damping in Epitaxial Iron Alloyed with Vanadium and Aluminum

Cited by 20 publications

References 64 publications

Advances in Magnetics Roadmap on Spin-Wave Computing

Advances in Magnetics Roadmap on Spin-Wave Computing

Room-Temperature Intrinsic and Extrinsic Damping in Polycrystalline Fe Thin Films

Damping capacity and mechanical properties of Fe3Cr2NiCuAl medium entropy alloys by tuning phase constituents

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