3D Nanomagnetism in Low Density Interconnected Nanowire Networks

3D information storage Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 530 multistate magnetic configurations 3D nanomagnetism cond-mat.mtrl-sci 620 Engineering nanowire networks cond-mat.mes-hall Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Nanotechnology Nanoscience & Nanotechnology 0210 nano-technology
DOI: 10.1021/acs.nanolett.0c04366 Publication Date: 2020-12-11T18:53:00Z
ABSTRACT
Free-standing, interconnected metallic nanowire networks with density as low 40 mg/cm^{3} have been achieved over cm-scale areas, using electrodeposition into polycarbonate membranes that ion-tracked at multiple angles. Networks of magnetic nanowires further provide an exciting platform to explore 3-dimensional nanomagnetism, where their structure, topology and frustration may be used additional degrees freedom tailor the materials properties. New magnetization reversal mechanisms in cobalt are captured by first-order curve method, which demonstrate evolution from strong demagnetizing dipolar interactions intersections-mediated domain wall pinning propagation, eventually shape-anisotropy dominated reversal. These findings open up new possibilities for integrated devices memory, complex computation, neuromorphics.
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