Search Results - "Hellwig, O"

Beyond a phenomenological description of magnetostriction by Reid, A. H., Shen, X., Maldonado, P., Chase, T., Jal, E., Granitzka, P. W., Carva, K., Li, R. K., Li, J., Wu, L., Vecchione, T., Liu, T., Chen, Z., Higley, D. J., Hartmann, N., Coffee, R., Wu, J., Dakovski, G. L., Schlotter, W. F., Ohldag, H., Takahashi, Y. K., Mehta, V., Hellwig, O., Fry, A., Zhu, Y., Cao, J., Fullerton, E. E., Stöhr, J., Oppeneer, P. M., Wang, X. J., Dürr, H. A.

“…Magnetostriction, the strain induced by a change in magnetization, is a universal effect in magnetic materials. Owing to the difficulty in unraveling its…”
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Addendum to: Determining the preferred directions of magnetisation in cubic crystals using symmetric polynomial inequalities by Samad, Fabian, Hellwig, O.

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Lensless imaging of magnetic nanostructures by X-ray spectro-holography by Eisebitt, S, Lüning, J, Schlotter, W. F, Lörgen, M, Hellwig, O, Eberhardt, W, Stöhr, J

“…Our knowledge of the structure of matter is largely based on X-ray diffraction studies of periodic structures and the successful transformation (inversion) of…”
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Domain Wall Based Spin-Hall Nano-Oscillators by Sato, N, Schultheiss, K, Körber, L, Puwenberg, N, Mühl, T, Awad, A A, Arekapudi, S S P K, Hellwig, O, Fassbender, J, Schultheiss, H

“…In the last decade, two revolutionary concepts in nanomagnetism emerged from research for storage technologies and advanced information processing. The first…”
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Elimination of X-Ray Diffraction through Stimulated X-Ray Transmission by Wu, B, Wang, T, Graves, C E, Zhu, D, Schlotter, W F, Turner, J J, Hellwig, O, Chen, Z, Dürr, H A, Scherz, A, Stöhr, J

“…X-ray diffractive imaging with laterally coherent x-ray free-electron laser (XFEL) pulses is increasingly utilized to obtain ultrafast snapshots of matter…”
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Ultrafast Self-Induced X-Ray Transparency and Loss of Magnetic Diffraction by Chen, Z, Higley, D J, Beye, M, Hantschmann, M, Mehta, V, Hellwig, O, Mitra, A, Bonetti, S, Bucher, M, Carron, S, Chase, T, Jal, E, Kukreja, R, Liu, T, Reid, A H, Dakovski, G L, Föhlisch, A, Schlotter, W F, Dürr, H A, Stöhr, J

“…Using ultrafast ≃2.5  fs and ≃25  fs self-amplified spontaneous emission pulses of increasing intensity and a novel experimental scheme, we report the…”
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Measurement of the Curie temperature distribution in FePt granular magnetic media by Pisana, S., Jain, S., Reiner, J. W., Parker, G. J., Poon, C. C., Hellwig, O., Stipe, B. C.

“…Heat assisted magnetic recording (HAMR) has been recognized as a leading technology to increase the data storage density of hard disk drives. Dispersions in…”
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Combined frequency and time domain measurements on injection-locked, constriction-based spin Hall nano-oscillators by Hache, T., Weinhold, T., Schultheiss, K., Stigloher, J., Vilsmeier, F., Back, C., Arekapudi, S. S. P. K., Hellwig, O., Fassbender, J., Schultheiss, H.

“…We demonstrate a combined frequency and time domain investigation of injection-locked, constriction-based spin Hall nano-oscillators by Brillouin light…”
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Helicity and field dependent magnetization dynamics of ferromagnetic Co/Pt multilayers by Tsema, Yu, Kichin, G., Hellwig, O., Mehta, V., Kimel, A. V., Kirilyuk, A., Rasing, Th

“…We present helicity and field dependent magnetization dynamics of ferromagnetic Co/Pt multilayers, suitable for all-optical helicity-dependent switching…”
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Bit patterned media based on block copolymer directed assembly with narrow magnetic switching field distribution by Hellwig, O., Bosworth, J. K., Dobisz, E., Kercher, D., Hauet, T., Zeltzer, G., Risner-Jamtgaard, J. D., Yaney, D., Ruiz, R.

“…Electron-beam (E-beam) directed assembly, which combines the long-range phase and placement registration of e-beam lithography with the sharp dot size and…”
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Spin stress contribution to the lattice dynamics of FePt by von Reppert, A., Willig, L., Pudell, J.-E., Zeuschner, S. P., Sellge, G., Ganss, F., Hellwig, O., Arregi, J. A., Uhlíř, V., Crut, A., Bargheer, M.

“…Two-pulse laser excitation of FePt nanolayers distinguishes ultrafast stresses of magnetic excitations from the Poisson effect. Invar-behavior occurring in…”
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Influence of structural disorder on magnetic domain formation in perpendicular anisotropy thin films by Pierce, M. S., Davies, J. E., Turner, J. J., Chesnel, K., Fullerton, E. E., Nam, J., Hailstone, R., Kevan, S. D., Kortright, J. B., Liu, Kai, Sorensen, L. B., York, B. R., Hellwig, O.

“…Using a combination of resonant soft x-ray scattering, magnetometry, x-ray reflectivity, and microscopy techniques we have investigated the magnetic properties…”
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Coercivity tuning in Co/Pd multilayer based bit patterned media by Hellwig, O., Hauet, T., Thomson, T., Dobisz, E., Risner-Jamtgaard, J. D., Yaney, D., Terris, B. D., Fullerton, E. E.

“…In order to adjust the reversal field of high anisotropy [ Co ( 2.8   Å ) / Pd ( 9   Å ) ] 8 bit patterned media (BPM), one may increase the individual Co…”
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Separating dipolar broadening from the intrinsic switching field distribution in perpendicular patterned media by Hellwig, O., Berger, A., Thomson, T., Dobisz, E., Bandic, Z. Z, Yang, H., Kercher, D. S., Fullerton, E. E.

“…A critical requirement for bit patterned media applications is the control and minimization of the switching field distribution (SFD). Here, we use the Δ H ( M…”
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Origin of magnetic switching field distribution in bit patterned media based on pre-patterned substrates by Pfau, B., Günther, C. M., Guehrs, E., Hauet, T., Yang, H., Vinh, L., Xu, X., Yaney, D., Rick, R., Eisebitt, S., Hellwig, O.

“…Using a combination of synchrotron radiation based magnetic imaging and high-resolution transmission electron microscopy we reveal systematic correlations…”
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Influence of stray fields on the switching-field distribution for bit-patterned media based on pre-patterned substrates by Pfau, B., Günther, C. M., Guehrs, E., Hauet, T., Hennen, T., Eisebitt, S., Hellwig, O.

“…Using a direct imaging method, we experimentally investigate the reversal of magnetic islands in a bit-patterned media sample based on a pre-patterned…”
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Cumulative minor loop growth in Co/Pt and Co/Pd multilayers by Berger, A., Mangin, S., McCord, J., Hellwig, O., Fullerton, E. E.

“…The behavior of minor hysteresis loops in perpendicular anisotropy Co/Pt and Co/Pd multilayers has been investigated. Upon applying a succession of identical…”
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Tuning the magnetic properties of Co nanoparticles by Pt capping by Ebbing, A., Hellwig, O., Agudo, L., Eggeler, G., Petracic, O.

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Thickness dependent magnetization dynamics of perpendicular anisotropy Co/Pd multilayer films by Liu, Z., Brandt, R., Hellwig, O., Florez, S., Thomson, T., Terris, B., Schmidt, H.

“…We present the measurements of the picosecond magnetization dynamics of Co/Pd multilayer films. The dynamic magnetization properties of sputtered multilayer…”
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Prevention of dewetting during annealing of FePt films for bit patterned media applications by McCallum, A. T., Kercher, D., Lille, J., Weller, D., Hellwig, O.

“…We investigated different fabrication methods for (002) textured high anisotropy L10-FePt thin continuous films. While depositing at elevated temperature or…”
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