| DOI | Resolve DOI: https://doi.org/10.1063/1.1884187 |
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| Author | Search for: Pynn, R.; Search for: Fitzsimmons, M.; Search for: Fritzsche, Helmut1; Search for: Gierlings, M.; Search for: Major, J.; Search for: Jason, A. |
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| Affiliation | - National Research Council of Canada. NRC Canadian Neutron Beam Centre
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| Format | Text, Article |
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| Subject | ferromagnetic materials; magnetic thin films; metallic thin films; neutron diffraction; Permalloy |
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| Abstract | We describe experiments in which the neutron spin echo technique is used to measure neutron scattering angles. We have implemented the technique, dubbed spin echo scattering angle measurement (SESAME), using thin films of Permalloy electrodeposited on silicon wafers as sources of the magnetic fields within which neutron spins precess. With 30‐𝜇m-thick films we resolve neutron scattering angles to about 0.02° with neutrons of 4.66Å wavelength. This allows us to probe correlation lengths up to 200nm in an application to small angle neutron scattering. We also demonstrate that SESAME can be used to separate specular and diffuse neutron reflection from surfaces at grazing incidence. In both of these cases, SESAME can make measurements at higher neutron intensity than is available with conventional methods because the angular resolution achieved is independent of the divergence of the neutron beam. Finally, we discuss the conditions under which SESAME might be used to probe in-plane structure in thin films and show that the method has advantages for incident neutron angles close to the critical angle because multiple scattering is automatically accounted for. |
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| Publication date | 2005-04-15 |
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| Publisher | American Institute of Physics |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 12327510 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 562a8700-6221-4d4f-9c16-8d79fc17450c |
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| Record created | 2009-09-10 |
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| Record modified | 2023-03-30 |
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