dc.contributor.author | Cerqueira, Anthony | |
dc.date.accessioned | 2011-09-06T14:00:35Z | |
dc.date.available | 2011-09-06T14:00:35Z | |
dc.date.issued | 2011-09-06 | |
dc.identifier.uri | http://hdl.handle.net/10222/14169 | |
dc.description.abstract | The focus of the present research is to find the relative thermodynamic stability of ?-boron and ?-boron via heat capacity measurements. Efforts to synthesize ?-boron through the application of vapour-liquid-solid theory resulted in the discovery of a new chemical vapour deposition approach. The heat capacities of both synthesized ?-boron and commercial (99.5%) ?-boron were determined using relaxation calorimetry over the temperature range 0.2 K to 400 K. These data, in combination with literature information, allowed the calculation of the Gibbs energy of the ?-boron to ?-boron transition from 0 K to 1985 K. It was found that the transition from ?-boron to ?-boron was thermodynamically favourable at all temperatures up to 1985 K with a value of ?Gt(T = 300 K) = -10 kJ mol-1 ± 1 kJ mol-1 and ?Gt(T = 1985 K) = -15 kJ mol-1 ± 1 kJ mol-1. | en_US |
dc.language.iso | en | en_US |
dc.subject | boron | en_US |
dc.subject | alpha | en_US |
dc.subject | beta | en_US |
dc.subject | allotrope | en_US |
dc.subject | stability | en_US |
dc.subject | CVD | en_US |
dc.subject | VLS | en_US |
dc.subject | thermodynamics | en_US |
dc.title | Synthesis and Thermodynamic Investigation of Boron Allotropes | en_US |
dc.date.defence | 2011-08-26 | |
dc.contributor.department | Department of Chemistry | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | None | en_US |
dc.contributor.graduate-coordinator | Dr. Jean Burnell | en_US |
dc.contributor.thesis-reader | Dr. Kevin R. Grundy | en_US |
dc.contributor.thesis-reader | Dr. Mark N. Obrovac | en_US |
dc.contributor.thesis-reader | Dr. Josef W. Zwanziger | en_US |
dc.contributor.thesis-supervisor | Dr. Mary Anne White | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |