Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/49387
Title: Novel Magnonic Crystals and Devices: Fabrication, Static and Dynamic Behaviors
Authors: DING JUNJIA
Keywords: Magnonic Crystals, Nanomagnetism, Nanofabrication, Ferromagnetic Resonance, Magnetic Logic Applications, Binary Nanostructures
Issue Date: 16-Aug-2013
Source: DING JUNJIA (2013-08-16). Novel Magnonic Crystals and Devices: Fabrication, Static and Dynamic Behaviors. ScholarBank@NUS Repository.
Abstract: In the last decade, magnonic crystals (MC), conceived as the magnetic analogue of photonic crystals, have attracted a lot of interest due to their potential use in a wide range of applications. In this thesis, a comprehensive study of the static and dynamic magnetic properties of various types of MCs is presented. 1-D, 2-D and binary MCs with different configurations were fabricated and systematically investigated using a combination of broadband ferromagnetic resonance spectroscopy, Magneto-Optical Kerr effect and magnetic force microscopy. A ?self-aligned shadow deposition? technique was developed to fabricate bi-component MC consisting of two contrasting ferromagnetic materials (binary MC). High-quality Ni80Fe20/Ni80Fe20 and Ni/Ni80Fe20 binary elliptical nanostructures arranged in three different con?gurations. Two logic designs have been proposed based on 1-D MCs and Ni80Fe20/Ni binary nanostructures cells in this thesis. Depending on the magnetic ordering of the cells, distinct dynamic states probed by broadband ferromagnetic resonance spectroscopy are realized.
URI: http://scholarbank.nus.edu.sg/handle/10635/49387
Appears in Collections:Ph.D Theses (Open)

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