Switching studies of perpendicular magnetic anisotropy materials and magnetic tunnel junctions

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dc.contributor Li, Dawen
dc.contributor Li, Shuhui
dc.contributor Kung, Patrick
dc.contributor Visscher, Pieter B.
dc.contributor.advisor Gupta, Subhadra
dc.contributor.author Abugri, Joseph Bukari
dc.date.accessioned 2020-01-16T15:04:33Z
dc.date.available 2020-01-16T15:04:33Z
dc.date.issued 2019
dc.identifier.other u0015_0000001_0003483
dc.identifier.other Abugri_alatus_0004D_13886
dc.identifier.uri http://ir.ua.edu/handle/123456789/6540
dc.description Electronic Thesis or Dissertation
dc.description.abstract The development of new materials for spintronic applications, such as STT-MRAM, continues to expand at a rapid rate, attracting a great deal of research interest. Our group has tried to simplify the design of the perpendicular magnetic tunnel junction (pMTJ) stack by replacing the complex Co/Pd multilayer synthetic antiferromagnet pinning layer with a CoPd alloy. In my PhD work, I have studied systems in which these CoPd layers are used to pin the reference layers of pMTJs. We have examined the influence of composition, thickness, and seed layers on the coercivity, remanence and perpendicular anisotropy of CoPd alloys, and related them to their structural properties and switching behavior utilizing various characterization methods. Results utilizing First Order Reversal Curve (FORC) analysis, atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), magnetic force microscropy (MFM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) will be detailed in this dissertation. It will be clearly shown that improved magnetic properties depend upon improved crystal structure of the CoPd alloy, which in turn, depends upon the seed layer upon which it is grown.
dc.format.extent 175 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Electrical engineering
dc.title Switching studies of perpendicular magnetic anisotropy materials and magnetic tunnel junctions
dc.type thesis
dc.type text
etdms.degree.department University of Alabama. Department of Electrical and Computer Engineering
etdms.degree.discipline Electrical and Computer Engineering
etdms.degree.grantor The University of Alabama
etdms.degree.level doctoral
etdms.degree.name Ph.D.


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