The Crystal Dynamics of Platinum
| dc.contributor.advisor | Brockhouse, B. N. | |
| dc.contributor.author | Dutton, David Hamilton | |
| dc.contributor.department | Physics | en_US |
| dc.date.accessioned | 2015-06-24T19:20:29Z | |
| dc.date.available | 2015-06-24T19:20:29Z | |
| dc.date.issued | 1970-09 | |
| dc.description.abstract | <p> The dispersion relations in Platinum have been measured at 90°K by the inelastic scattering of thermal neutrons. Born-von Karman models of the force system have been calculated by a process of linear least squares fitting to the dispersion curves. Fourth neighbour forces with weaker interactions extending to at least sixth neighbours are required to fit the data. A frequency distribution has been computed using the force constants of the most realistic model.</p> <p> Some interesting anomalous behaviour in the [035]T1 branches of both Platinum and Palladium has been investigated in detail at temperatures of 90,296 and 473°K. A qualitative analysis indicates that the behaviour is caused by the Kohn effect though its manifestation is rather unusual.</p> | en_US |
| dc.description.degree | Master of Science (MSc) | en_US |
| dc.description.degreetype | Thesis | en_US |
| dc.identifier.uri | http://hdl.handle.net/11375/17618 | |
| dc.language.iso | en_US | en_US |
| dc.subject | platinum, crystal, neutrons, force, linear, Kohn | en_US |
| dc.title | The Crystal Dynamics of Platinum | en_US |
| dc.type | Thesis | en_US |