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Title: Micromagnetic modeling of magnetic nanostructures
Keywords: Micromagnetics, chain anisotropy, switching field, magnetic soliton, eddy currents, spin torque.
Issue Date: 23-Feb-2005
Citation: WADHWA POOJA (2005-02-23). Micromagnetic modeling of magnetic nanostructures. ScholarBank@NUS Repository.
Abstract: Regular arrays of uniform (a??patterneda??) nanometer-sized magnetic elements have been proposed for use in spintronics applications such as high density data storage, memory elements and spin logic devices. In this thesis, fundamental study of the magnetic interactions in 1D arrays is performed by developing an analytical micromagnetic model and introducing the concept of a??chain anisotropya??. Switching properties such as nucleation and propagation fields are also analyzed numerically. This thesis proposes a spin logic device based on ID array of square nanomagnets, which is capable of controlled information transfer in linear, fan-out and cross-over manner by means of magnetic a??solitonsa??. Micromagnetic simulations of the device provide confirmation of soliton propagation around a bend, information fan-out in distinct directions and independent signal transmission at a cross-over point, to achieve full logic functionality. Finally, a 3D micromagnetic code is developed to incorporate current-induced effects such as eddy currents and spin transfer torque.
Appears in Collections:Master's Theses (Open)

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