Ph. D.

by Tsang Kin Hung. / Title also in Chinese. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references. / Table of Contents / Acknowledgements / Abstract / Part I --- p.1 / Chapter Chapter 1 --- Introduction --- p.2 / Chapter Chapter 2 --- Viscosity of molten P40Ni40P20 --- p.6 / Chapter Chapter 3 --- Viscosity of molten Pd77Cu6.5Si16.5 and the principle of corresponding state --- p.26 / Chapter Chapter 4 --- Viscosity of molten Pd82Si18 and the scaling of viscosities of glass forming systems --- p.40 / Part II --- p.53 / Chapter Chapter 5 --- Installation of Dual Electron Gun Evaporator --- p.54 / Chapter Chapter 6 --- Calorimetric studies of the Heat Capacity and Relaxation of Amorphous Si prepared by electron beam evaporation --- p.67

Chan Fu-wai = 非晶態鐵磁性鐵-磷-碳合金的製作 / 陳輔偉. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references. / Text in English; abstracts in English and Chinese. / Chan Fu-wai = Fei jing tai tie ci xing tie-lin-tan he jin de zhi zuo / Chen Fuwei. / Acknowledgments --- p.i / Abstract --- p.ii / Table of Content --- p.iv / Chapter Chapter 1: --- Introduction --- p.1 / Chapter 1.1 --- Nucleation --- p.1 / Chapter 1.1.1 --- Homogenous nucleation --- p.1 / Chapter 1.1.2 --- Heterogeneous nucleation --- p.4 / Chapter 1.2 --- The crystal growth --- p.5 / Chapter 1.2.1 --- The solid-liquid interface --- p.5 / Chapter 1.2.2 --- Lateral growth --- p.6 / Chapter 1.2.3 --- Continuous growth --- p.6 / Chapter 1.3 --- Non-equilibrium process --- p.8 / Chapter 1.3.1 --- Reduction of impurities --- p.8 / Chapter 1.3.2 --- Suppression of crystal growth --- p.8 / Chapter 1.4 --- The change in metallurgy --- p.9 / Chapter 1.4.1 --- The metallic glass --- p.9 / Chapter 1.4.2 --- The properties of glass --- p.10 / Chapter 1.4.3 --- The development of amorphous alloy --- p.11 / Chapter 1.5 --- Preparation methods of amorphous alloy --- p.12 / Chapter 1.6 --- The criterion of glass formation --- p.14 / Chapter 1.7 --- The study of this project --- p.15 / Reference --- p.16 / Figure --- p.19 / Chapter Chapter 2: --- Experiment --- p.36 / Chapter 2.1 --- Preparation --- p.36 / Chapter 2.2 --- Experimental procedure --- p.37 / Chapter 2.3 --- Sample analysis --- p.38 / Reference --- p.41 / Figure --- p.42 / Chapter Chapter 3: --- The formation of bulk ferromagnetic Fe-P-C amorphous alloy --- p.45 / Abstract --- p.45 / Introduction --- p.46 / Experiment --- p.47 / Result --- p.48 / Reference --- p.49 / Figure --- p.52 / Chapter Chapter 4: --- Compaction of bulk ferromagnetic Fe-P-C amorphous alloy --- p.57 / Abstract --- p.57 / Introduction --- p.58 / Experiment --- p.58 / Result --- p.60 / Reference --- p.61 / Figure --- p.62 / Chapter Chapter 5: --- Conclusion --- p.65

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1979. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Includes bibliographical references. / by Robert B. Laughlin. / Ph.D.

"Apr 2002." / The numerals in title is subscript. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2002. / Includes bibliographical references. / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

Solid-state amorphous materials show amazing promise in thin-film electronics. The interface-to-bulk ratio of thin films makes interfacial chemistries of these systems of utmost importance. Thin films of amorphous metals, dielectrics and semiconductors have novel chemistries that are not only based upon their elemental constituent makeup, but also based upon the method with which the amorphous material is deposited and treated after deposition. The chemical attributes unique to amorphous, thin-film systems are defined primarily through the utilization of solution-processed aluminum oxide phosphate dielectric material and Zr������Cu������Al������Ni������ metal. the chemical findings wrought via the observation of interactions between amorphous metal-dielectric systems are applied to semiconductor/insulator systems to illustrate the use of the same general chemical principles applying to diverse problems. Finally in the appendices, the systems are utilized to create extremely-thin tunneling electronic devices and optical metamaterials as well as innovative classroom material. / Graduation date: 2012 / Access restricted to the OSU Community at author's request from Dec. 13, 2011 - Dec. 13, 2012

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Solid-state amorphization of a crystalline solid to an amorphous phase is extensively studied as a first order phase transition at low temperature for almost thirty years. In this dissertation, we report the recent progress on phenomenological models employed for thermodynamic description of macroscopic systems and fluctuations and nucleation of mesoscopic inhomogeneous systems in binary solid solutions under polymorphic constraints with no long-range diffusion involved. Based on our understanding on atomic picture of solid-state amorphization in binary solid solutions, we propose a Landau free energy to describe amorphization as the first order phase transition. The order parameter is defined which represents the loss of long-range translational order. The elastic strain field induced by composition disorder plays the important role through the bilinear coupling with the order parameter. Elastic softening and amorphization happen simultaneously. From the similarity between the melting and amorphization, we use the temperature and composition as two external variables and treat solid-state amorphization as low temperature melting under polymorphic constraints. For homogeneous system, the phase diagrams for endothermic melting and exothermic melting are built separately and the corresponding thermodynamic quantities are presented. A microscopic homogeneous nucleation mechanism is proposed conceptually in binary solid solutions under polymorphic constraints. The formation of an amorphous embryo is initiated from the composition modulation in the crystal state and a subsequent polymorphous nucleation within the as-formed heterophase fluctuation. This homogeneous nucleation path is thought to be associated with the nonlinear energy localization mechanism connected with the localized large-amplitude excitations of atoms, which are induced by nonlinear and disorder. A Landau-Ginzburg free energy is constructed to describe the critical nucleus and the growth of the new phase in one-dimensional systems. Analytical and numerical methods contribute to the understanding the fluctuations and nucleation processes. Size-dependent melting and amorphization in nanosolids are investigated. Two models are proposed for nanocrystalline solid solutions to glass transformations. Based on the thin film model with finite thickness, we build one-dimensional Landau-Ginzburg approach, which includes surface contribution and size dependence, and numerical results do show similarity with experimentsâ results qualitatively.

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.