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http://hdl.handle.net/11375/8088
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DC Field | Value | Language |
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dc.contributor.advisor | Venus, David | en_US |
dc.contributor.author | Johnston, Hamish | en_US |
dc.date.accessioned | 2014-06-18T16:41:48Z | - |
dc.date.available | 2014-06-18T16:41:48Z | - |
dc.date.created | 2010-09-28 | en_US |
dc.date.issued | 1997-02 | en_US |
dc.identifier.other | opendissertations/3321 | en_US |
dc.identifier.other | 4337 | en_US |
dc.identifier.other | 1584252 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/8088 | - |
dc.description.abstract | <p>The structural and magnetic properties of ultrathin Fe/Ni(111)/W(110) films are investigated using LEED, two Auger electron spectroscopy techniques and magneto-optic Kerr magnetometry. A 2 ML Ni(111) buffer layer is used to grow fcc Fe(111) films to a thickness of 3 monolayers. The Ni substrate aIIows good wetting and lattice matching of the Fe without significant interfacial diffusion. Above 3ML a continuous structural transition from fcc to bcc is observed.</p> <p>An electron energy analyser for use with a spin polarised low energy electron diffraction (SPLEED) electron spin analyser was designed and built. The energy analyser is used to study the growth mode and structure of ultrathin Fe/Ni(111)/W(110) films using angle resolved auger emission spectroscopy (ARAES). A method is developed to fit computer simulations to the ARAES data to determine the growth mode of ultrathin films.</p> <p>Preliminary magnetic measurements of the fcc phase below 4 ML indicate that the Fe films are ferromagnetic with a magnetic moment perpendicular to the surface at coverages of 0.25 to 2.0 ML. At 2.5 ML a spin reorientation transition appears to occur and both perpendicular and in plane magnetic moments are observed. At 3.0 ML the magnetic moment is in the plane of the film.</p> | en_US |
dc.subject | Physics | en_US |
dc.subject | Physics | en_US |
dc.title | A Study of the Magnetic and Structural Properties of Ultrathin Fe/Ni(111)/W(110) Films | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Physics | en_US |
dc.description.degree | Doctor of Philosophy (PhD) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 5.2 MB | Adobe PDF | View/Open |
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