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5 results for “magnetic thin films”
Dataset for the publication "Reversing the magnetization of 50-nm-wide ferromagnets by ultrashort magnons in thin-film Yttrium Iron Garnet"
<p>Dataset belonging to the manuscript "Reversing the magnetization of 50-nm-wide ferromagnets by ultrashort magnons in thin-film Yttrium Iron Garnet" published in Nanoscale Horizons, doi: <a href="https://doi.org/10.1039/D4NH00095A">https://doi.org/10.1039/D4NH00095A</a></p> <p>Every specific folder contains a text file that explains the measurement parameters and file formats.</p> <p>Abstract:</p> <p>Spin waves (magnons) can enable neuromorphic computing by which one aims at overcoming limitations inherent to conventional electronics and the von Neumann architecture. Encoding magnon signal by reversing magnetization of a nanomagnetic memory bit is pivotal to realize such novel computing schemes efficiently. A magnonic neural network was recently proposed consisting of differently configured nanomagnets that control nonlinear magnon interference in an underlying yttrium iron garnet (YIG) film [Papp et al., Nature communications, 2021, 12, 6422]. In this study, we explore the nonvolatile encoding of magnon signals by switching the magnetization of periodic and aperiodic arrays (gratings) of Ni81Fe19 (Py) nanostripes with widths w between 50 nm and 200 nm. Integrating 50-nm-wide nanostripes with a coplanar waveguide, we excited magnons having a wavelength λ of ≈100 nm. At a small spin-precessional power of 11 nW, these ultrashort magnons switch the magnetization of 50-nm-wide Py nanostripes after they have propagated over 25 μm in YIG. We also demonstrate the magnetization reversal of nanostripes patterned in an aperiodic sequence. We thereby show that the magnon-induced reversal happens regardless of the width and periodicity of the nanostripe gratings. Our study enlarges substantially the parameter regime for magnon-induced nanomagnet reversal on YIG and is important for realizing in-memory computing paradigms making use of magnons with ultrashort wavelengths at low power consumption."</p>
Open data of Control of damping in perpendicularly magnetized thin films using spin-orbit torques
<p>Open access data set for manuscript "Control of damping in perpendicularly magnetized thin films using spin-orbit torques" published in Physical Review B, <strong>101</strong>, 224401 (2020)</p>
Engineering of intrinsic chiral torques in magnetic thin films based on the Dzyaloshinskii-Moriya interaction
<p>Open data for <strong>Engineering of intrinsic chiral torques in magnetic thin films based on the Dzyaloshinskii-Moriya interaction</strong></p>
Data associated with the paper "Plethora of tunable Weyl fermions in kagome magnet Fe3Sn2 thin films"
<p>Data associated with the paper "Plethora of tunable Weyl fermions in kagome magnet Fe3Sn2 thin films".</p>
Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy
<p>Experimental data of the following manuscript:</p> <p>Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO<sub>3</sub> Thin Films Studied by Emission Mössbauer Spectroscopy</p> <p>Heiniger-Schell, J.; Bharuth-Ram, K.; Naicker, K.; Masondo, V.; Dang, T.T.; Escobar, M.; Díaz-Guerra, C.; Marschick, G.; Masenda, H.; Gunnlaugsson, H.P.; et al. Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy. Crystals 2023, 13, 724. https://doi.org/10.3390/ cryst13050724</p> <p> </p> <p>Abstract</p> <p>Emission <sup>57</sup>Fe Mössbauer spectroscopy (eMS), following the implantation of radioactive <sup>57</sup>Mn<sup>+</sup> ions, has been used to study the temperature dependence of the hyperfine magnetic field at Fe sites in Ba-doped BiFeO<sub>3</sub> (BFO) thin films. <sup>57</sup>Mn β decays (t<sub>1/2</sub> = 90 s) to the 14.4 keV Mössbauer state of <sup>57</sup>Fe, thus allowing online eMS measurements at a selection of sample temperatures during Mn implantation. The eMS measurements were performed on two thin film BFO samples, 88 nm and 300 nm thick, and doped to 15% with Ba ions. The samples were prepared by pulsed laser deposition on SrTiO<sub>3</sub> substrates. X-ray diffraction analyses of the samples showed that the films grew in a tetragonal distorted structure. The Mössbauer spectra of the two films, measured at absorber temperatures in the range 301 K–700 K, comprised a central pair of paramagnetic doublets and a magnetic sextet feature in the wings. The magnetic component was resolved into (i) a component attributed to hyperfine interactions at Fe<sup>3+</sup> ions located in octahedral sites (B<sub>hf</sub>); and (ii) to Fe<sup>3+</sup> ions in implantation induced lattice defects, which were characterized by a distribution of the magnetic field B<sub>Distr</sub>. The hyperfine magnetic field at the Fe probes in the octahedral site has a room temperature value of B<sub>hf</sub> = 44.5(9) T. At higher sample temperatures, the B<sub>hf</sub> becomes much weaker, with the Fe<sup>3+</sup> hyperfine magnetic contribution disappearing above 700 K. Simultaneous analysis of the Ba–BFO eMS spectra shows that the variation of the hyperfine field with temperature follows the Brillouin curve for <em>S</em> = 5/2.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.