Outputs (54)

Temperature Dependence of Magnetically Dead Layers in Ferromagnetic Thin-Films (2017)
Journal Article
Tokac, M., Kinane, C., Atkinson, D., & Hindmarch, A. (2017). Temperature Dependence of Magnetically Dead Layers in Ferromagnetic Thin-Films. AIP Advances, 7(11), Article 115022. https://doi.org/10.1063/1.4997366

Polarized neutron reflectometry has been used to study interface magnetism and magnetic dead layers in model amorphous CoFeB:Ta alloy thin-film multilayers with Curie temperatures tuned to be below room-temperature. This allows temperature dependent... Read More about Temperature Dependence of Magnetically Dead Layers in Ferromagnetic Thin-Films.

Magnetic damping phenomena in ferromagnetic thin-films and multilayers (2017)
Journal Article
Azzawi, S., Hindmarch, A., & Atkinson, D. (2017). Magnetic damping phenomena in ferromagnetic thin-films and multilayers. Journal of Physics D: Applied Physics, 50(47), Article 473001. https://doi.org/10.1088/1361-6463/aa8dad

Damped ferromagnetic precession is an important mechanism underpinning the magnetisation processes in ferromagnetic materials. In thin-film ferromagnets and ferromagnetic/non-magnetic multilayers, the role of precession and damping can be critical fo... Read More about Magnetic damping phenomena in ferromagnetic thin-films and multilayers.

Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires (2017)
Journal Article
Brandão, J., Azzawi, S., Hindmarch, A., & Atkinson, D. (2017). Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires. Scientific Reports, 7(1), Article 4569. https://doi.org/10.1038/s41598-017-04088-8

Heavy metal layers, exemplified by Pt, are known to play a significant role in the magnetization behaviour of thin-film ferromagnets by three distinct mechanisms that can each contribute to the reversal process. These include modifying the local magn... Read More about Understanding the role of damping and Dzyaloshinskii-Moriya interaction on dynamic domain wall behaviour in platinum-ferromagnet nanowires.

Evolution of damping in ferromagnetic/nonmagnetic thin film bilayers as a function of nonmagnetic layer thickness (2016)
Journal Article
Azzawi, S., Ganguly, A., Tokaç, M., Rowan-Robinson, R., Sinha, J., Hindmarch, A., …Atkinson, D. (2016). Evolution of damping in ferromagnetic/nonmagnetic thin film bilayers as a function of nonmagnetic layer thickness. Physical Review B, 93(5), Article 054402. https://doi.org/10.1103/physrevb.93.054402

The evolution of damping in Co/Pt, Co/Au, and Ni81Fe19/Pt bilayers was studied with increasing nonmagnetic (NM) heavy-metal layer thicknesses in the range 0.2nm≤tNM≤10nm, where tNM is the NM layer thickness. Magnetization precession was measured in t... Read More about Evolution of damping in ferromagnetic/nonmagnetic thin film bilayers as a function of nonmagnetic layer thickness.

Tunable Magnetization Dynamics in Interfacially Modified Ni81Fe19/Pt Bilayer Thin Film Microstructures (2015)
Journal Article
Ganguly, A., Azzawi, S., Saha, S., King, J., Rowan-Robinson, R., Hindmarch, A., …Barman, A. (2015). Tunable Magnetization Dynamics in Interfacially Modified Ni81Fe19/Pt Bilayer Thin Film Microstructures. Scientific Reports, 5, Article 17596. https://doi.org/10.1038/srep17596

Interface modification for control of ultrafast magnetic properties using low-dose focused ion beam irradiation is demonstrated for bilayers of two technologically important materials: Ni81Fe19 and Pt. Magnetization dynamics were studied using an all... Read More about Tunable Magnetization Dynamics in Interfacially Modified Ni81Fe19/Pt Bilayer Thin Film Microstructures.

Interfacial Contribution to Thickness Dependent in-plane Anisotropic Magnetoresistance (2015)
Journal Article
Tokaç, M., Wang, M., Jaiswal, S., Rushforth, A., Gallagher, B., Atkinson, D., & Hindmarch, A. (2015). Interfacial Contribution to Thickness Dependent in-plane Anisotropic Magnetoresistance. AIP Advances, 5(12), Article 127108. https://doi.org/10.1063/1.4937556

We have studied in-plane anisotropic magnetoresistance(AMR) in cobaltfilms with overlayers having designed electrically interface transparency. With an electrically opaque cobalt/overlayer interface, the AMR ratio is shown to vary in inverse proporti... Read More about Interfacial Contribution to Thickness Dependent in-plane Anisotropic Magnetoresistance.

Interfacial Structure Dependent Spin Mixing Conductance in Cobalt Thin Films (2015)
Journal Article
Tokaç, M., Bunyaev, S., Kakazei, G., Schmool, D., Atkinson, D., & Hindmarch, A. (2015). Interfacial Structure Dependent Spin Mixing Conductance in Cobalt Thin Films. Physical Review Letters, 115(5), Article 056601. https://doi.org/10.1103/physrevlett.115.056601

Enhancement of Gilbert damping in polycrystalline cobalt thin-film multilayers of various thicknesses, overlayered with copper or iridium, was studied in order to understand the role of local interface structure in spin pumping. X-ray diffraction ind... Read More about Interfacial Structure Dependent Spin Mixing Conductance in Cobalt Thin Films.

Time-domain detection of current controlled magnetization damping in Pt/Ni81Fe19 bilayer and determination of Pt spin Hall angle (2014)
Journal Article
Ganguly, A., Rowan-Robinson, R., Haldar, A., Jaiswal, S., Sinha, J., Hindmarch, A., …Barman, A. (2014). Time-domain detection of current controlled magnetization damping in Pt/Ni81Fe19 bilayer and determination of Pt spin Hall angle. Applied Physics Letters, 105(11), Article 112409. https://doi.org/10.1063/1.4896277

The effect of spin torque from the spin Hall effect in Pt/Ni81Fe19 rectangular bilayer film was investigated using time-resolved magneto-optical Kerr microscopy. Current flow through the stack resulted in a linear variation of effective damping up to... Read More about Time-domain detection of current controlled magnetization damping in Pt/Ni81Fe19 bilayer and determination of Pt spin Hall angle.

Enhanced electron-magnon scattering in ferromagnetic thin films and the breakdown of the Mott two-current model (2014)
Journal Article
Rowan-Robinson, R., Hindmarch, A., & Atkinson, D. (2014). Enhanced electron-magnon scattering in ferromagnetic thin films and the breakdown of the Mott two-current model. Physical review B, 90(10), https://doi.org/10.1103/physrevb.90.104401

Electron-magnon spin-flip scattering in thin films was studied by investigating the thickness dependence of the anisotropic magnetoresistance (AMR) effect and spin-wave stiffness. The absolute resistivity change due to the AMR effect (Δρ) in Ni, Ni:V... Read More about Enhanced electron-magnon scattering in ferromagnetic thin films and the breakdown of the Mott two-current model.

Local control of magnetic damping in ferromagnetic/non-magnetic bilayers by interfacial intermixing induced by focused ion-beam irradiation (2014)
Journal Article
King, J., Ganguly, A., Burn, D., Pal, S., Sallabank, E., Hase, T., …Atkinson, D. (2014). Local control of magnetic damping in ferromagnetic/non-magnetic bilayers by interfacial intermixing induced by focused ion-beam irradiation. Applied Physics Letters, 104(24), Article 242410. https://doi.org/10.1063/1.4883860

The influence of interfacial intermixing on the picosecond magnetization dynamics of ferromagnetic/non-magnetic thin-film bilayers was studied. Low-dose focused-ion-beam irradiation was used to induce intermixing across the interface between a 10 nm... Read More about Local control of magnetic damping in ferromagnetic/non-magnetic bilayers by interfacial intermixing induced by focused ion-beam irradiation.