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http://hdl.handle.net/11375/6315| Title: | Magnetic Excitations in the Diluted Ferromagnet Ni₂Mn₀.₈V₀.₂ˢⁿ |
| Authors: | Locke, Kenneth E. |
| Advisor: | Stager, C.V. |
| Department: | Physics |
| Keywords: | Physics;Physics |
| Publication Date: | Nov-1981 |
| Abstract: | <p>The magnetic excitation spectrum of the randomly diluted ferromagnet, Ni₂Mn₀.₈V₀.₂Sn, has been measured by neutron inelastic techniques. The frequencies are reduced from those observed for the non-diluted ferro-magnet, Ni₂MnSn, by a factor that depends on wavevector. The shape of the frequency shift is characteristic of an in-band resonance. Computer simulation calculations have been performed for large finite arrays (~15,000 spins) including up to third neighbour interactions. The predicted frequencies agree with experiment. The calculations show a resonant effect however it is not as pronounced as the observed effect.</p> |
| URI: | http://hdl.handle.net/11375/6315 |
| Identifier: | opendissertations/1634 2059 1240850 |
| Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
| File | Size | Format | |
|---|---|---|---|
| fulltext.pdf | 3.54 MB | Adobe PDF | View/Open |
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