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http://hdl.handle.net/11375/16156
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DC Field | Value | Language |
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dc.contributor.advisor | Venus, David | - |
dc.contributor.author | He, Gengming | - |
dc.date.accessioned | 2014-10-24T18:31:52Z | - |
dc.date.available | 2014-10-24T18:31:52Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | http://hdl.handle.net/11375/16156 | - |
dc.description.abstract | Measurements of SMOKE ac magnetic susceptibility of Fe/Ni(111)/W(110) ultrathin films were used to investigate the thickness driven spin reorientation transition. χ_⊥ exhibits a broad peak with an exponential decay at high coverage, which is in agreement with the stripe domain model studied in the temperature driven spin reorientation. A strong χ_([001]) peak, which comes from the perpendicular-canted state transition, suggests a continuous reorientation process. χ_([001]) was measured at T=255K, 300K, 315K, 330K, 360K and 380K. A temperature-thickness phase diagram was constructed and reveals the temperature dependence of the surface anisotropy. The χ_([001]) peak magnitude is attenuated by high temperature and vanishes at T=380K. It suggests a "domain melting" in the perpendicular magnetization state. Another χ_⊥ peak at t≈1.0ML correlates to the film formation. A quantitative model is built to explain the microscopic mechanism behind this peak. | en_US |
dc.language.iso | en | en_US |
dc.title | Magnetic Susceptibility Observation of Thickness Driven Spin Reorientation in Ultrathin Fe/Ni(111)/W(110) Films | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Physics and Astronomy | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Science (MSc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Thesis final.pdf | Thesis | 3.21 MB | Adobe PDF | View/Open |
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