We have developed new techniques, which enable us to study the kinetics of phase transitions in situ. By resistive self heating of samples, heating rates of over 10$ sp4$ K/s have been achieved. Our methods allows us to acquire x-ray diffraction patterns as quickly as every 3 ms. / We have used these new techniques of time resolved x-ray diffraction experiments to study the crystallization kinetics of amorphous NiZr$ sb2,$ CoZr$ sb2,$ FeZr$ sb2$ and Ni$ sb{36.5}$Zr$ sb{63.5}.$ The experiments were performed at beamline X20C National Synchrotron Light Source. / We have mostly focussed on the crystallization behaviour at high temperatures and therefore faster kinetics. We have found many new results and unexpected metastable phases in these systems. Most of these phases would not be seen using conventional techniques showing the importance of in situ time resolved structural measurements to study the kinetics of phase transitions.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.74548 |
| Date | January 1990 |
| Creators | Yang, Yong Suk Tony. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Physics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001170126, proquestno: AAINN66431, Theses scanned by UMI/ProQuest. |
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