Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/132153
Title: FERROMAGNETIC RESONANCE STUDY OF MAGNETIC FILMS VIA TRANSMISSION LINE PERTURBATION AND ELECTRICAL METHODS
Authors: SOH WEE TEE
Keywords: Ferromagnetic resonance, spin rectification, magnetic thin films, spin Hall effect, spin pumping, stripe domains
Issue Date: 5-Aug-2016
Citation: SOH WEE TEE (2016-08-05). FERROMAGNETIC RESONANCE STUDY OF MAGNETIC FILMS VIA TRANSMISSION LINE PERTURBATION AND ELECTRICAL METHODS. ScholarBank@NUS Repository.
Abstract: This thesis examines two main methods to characterize the dynamic properties of magnetic thin film systems: transmission line perturbation and electrical methods. Firstly, using the transmission line perturbation method, we studied the magnetization dynamics of NiFe films with stripe domains. Our results highlighted some of the unique features of stripe domains in these films, notably a field-dependent rotatable anisotropy field. Secondly, using the electrical detection of ferromagnetic resonance (FMR) based on spin rectification effect (SRE), we demonstrated that both the dynamic magnetic properties and magneto-transport properties magnetic films can be simultaneously characterized. We also propose a method to accurately separate SRE from inverse spin Hall effect-induced voltages in NiFe/Pt bilayers. Finally, we extend the method for local electrical measurements of spin dynamics with a shorted-coaxial probe, and demonstrate how SRE can be used to separate and quantify both the static and dynamic magnetic dipolar fields due to oscillating spins.
URI: http://scholarbank.nus.edu.sg/handle/10635/132153
Appears in Collections:Ph.D Theses (Open)

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