Effective anisotropies in magnetic nanowires using the torque method

Rotărescu, C.; Moreno, R.; Fernández-Roldán, José Ángel; Trabada, Daniel G.; Nemes, N. M.; Fehér, Titusz; Bran, Cristina; Vázquez, M.; Chiriac, H.; Lupu, N.; Óvári, T.-A.; Chubykalo‐Fesenko, O.

doi:10.1016/j.jmmm.2017.07.059

Cited by 4 publications

(1 citation statement)

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“…Global torque measurements can be applied to large arrays of nanowires, e.g., as done for Co (Ounadjela et al 1997, Rivas et al 2002 and Ni (Vega et al 2011). Besides anisotropy, fine information may be extracted through micromagnetic modelling, e.g., details about end domains (Rotarescu et al 2017). Thanks to progress in nanofabrication techniques, torque measurements are increasingly being applied to single objects attached to a micro-cantilever (Stipe et al 2001, Naveen et al 2016.…”

Section: Torquemetry / Cantilever Magnetometrymentioning

confidence: 99%

Magnetic Nanowires and Nanotubes

Staňo

Fruchart

2018

Handbook of Magnetic Materials

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We propose a review of the current knowledge about the synthesis, magnetic properties and applications of magnetic cylindrical nanowires and nanotubes. By nano we consider diameters reasonably smaller than a micrometer. At this scale, comparable to micromagnetic and transport length scales, novel properties appear. At the same time, this makes the underlying physics easier to understand due to the limiter number of degrees of freedom involved. The three-dimensional nature and the curvature of these objects contribute also to their specific properties, compared to patterns flat elements. While the topic of nanowires and later nanotubes started now decades ago, it is nevertheless flourishing, thanks to the progress of synthesis, theory and characterization tools. These give access to ever more complex and thus functional structures, and also shifting the focus from material-type measurements of large assemblies, to single-object investigations. We first provide an overview of common fabrication methods yielding nanowires, nanotubes and structures engineered in geometry (change in diameter, shape) or material (segments, core-shell structures), shape or core-shell. We then review their magnetic properties: global measurements, magnetization states and switching, single domain wall statics and dynamics, and spin waves. For each aspect, both theory and experiments are surveyed. We also mention standard characterization techniques useful for these. We finally mention emerging applications of magnetic nanowires and nanotubes, along with the foreseen perspectives in the topic.

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