Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 447 for “"phase diagram"”.
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Pressure-Temperature Phase Diagram of LiAlH4
… of the monoclinic alpha-LiAlH4 to delta-LiAlH4 phase at ~3.25 GPa. As the temperature is increased to ~100°C both the alpha and delta phases transform to beta-LiAlH4 and remain stable up to 5.5 GPa. At temperatures greater than 300°C a new gamma-LiAlH4 phase forms. The data obtained in this …
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The AI-Pt-Ru ternary phase diagram
No abstract available.
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High-Throughput Ab Initio Phase Diagram Prediction
… neural networks. I use EDDPs to predict the phase diagrams of the heavy metals lead and polonium. In the process, insight is gained into the best strategies for developing EDDPs, and their behaviour in dynamical calculations. The effects of spin-orbit coupling on structure and melting point …
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Experimental study of the spin-glass phase diagram
The spin-glass phase diagram is examined as a function of temperature, magnetic field, random anisotropy, and uniaxial anisotropy and the results are compared to recent mean-field theories. It is clearly demonstrated through measurements of the magnetic relaxation processes in the amorphous …
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Second order critical point in QCD phase diagram
… by arguing that the critical point of the QCD phase diagram is second order and belongs to the three dimensional Ising model universality class. Then the singular part of the equation of state is derived. The singular part and non-singular part equation of state are glued together to find the …
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The superconducting phase diagram of the t-J model
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Characterization of the Transition Region in the QCD Phase Diagram
The study of the Quantum Chromodynamics (QCD) phase diagram has been the object of great effort in the scientific community both from theory and experiment, and has been investigated from first principles through lattice simulations in the low density regime. The transition between ordinary matter …
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STRONGLY INTERACTING MATTER:ANALYSIS OF QCD PHASE DIAGRAM BY THERMODYNAMIC GEOMETRY
… on the study of the Quantum Chromodynamics (QCD) phase transition, both from a phenomenological and a theoretical point of view. Three main research lines have been considered: • The study of some phenomenological topics of the phase transition has been carried out. In particular, I studied …
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Synthesis and study of crystalline hydrogels, guided by a phase diagram.
… for PNIPAM particles in swollen and in collapsed phases. An aqueous dispersion of PNIPAM particles can freeze at both high and low temperatures. At low temperatures, the freezing occurs at a large particle volume fraction, similar to that in a hard-sphere system; while at high temperature, the …
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Simulation Studies Of Self-assembly And Phase Diagram Of Amphiphilic Molecules
… to investigate self-assembled structures and the phase diagram of amphiphilic molecules of diverse geometric shapes using a number of different computer simulation methods. The semi-realistic coarse-grained model, used extensively for simulation of polymers and surfactant molecules, is adopted in …
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Exploration of the CU-MN-AS ternary phase diagram and MN3B4 antiferromagnets
… more than fifty years ago, both in a tetragonal phase (t-CuMnAs) and orthorhombic phase (o-CuMnAs). Today, the prospect of spintronics has created a new focus on antiferromagnetic materials with Néel temperatures above room temperature, with the goal of reading and writing spin orientations by …
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Determination of the liquid-gas phase diagram for electrons and holes in germanium
The existence of the electron-hole gas (EHG) phase has been confirmed in Ge by direct observation and the phase diagram and critical point of the liquid-gas transition have been determined. The position of the metal-insulator transition has been estimated. The electron-hole 1iquid-EHG-exciton …
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Phase diagram determination and relative dielectric constant measurements of the butyronitrile-chloroethane system
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Phase Diagram of a Driven Lattice Gas of Two Species with Attractive Interactions
We study the phase diagram of an interacting lattice gas of two species of particles and holes, driven out of equilibrium by a local hopping bias (denoted by `E'). Particles interact by excluded volume and nearest-neighbor attractions. We present a detailed Monte Carlo investigation of the phase …
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Efficient Numeric Computation of a Phase Diagram in Biased Diffusion of Two Species
… volume condition undergoes an order-disorder phase transition, controlled by the particle density and the field strength. This transition may be continuous (second order) or continuous (first order). Results from previous discrete simulations are shown, and a theoretical continuum model is …
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Interaction of Nonequilibrium Phonons With Electron-Hole Plasmas in Germanium (Liquid, Excitons, Phase Diagram)
… two studies involve the low temperature fluid phase known as the electron-hole liquid (EHL). The third study involves a wider range of temperatures and includes the higher temperature electron-hole plasma (EHP).
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The phase diagram of the sodium bromide-water system by the thermal analysis method
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Chemistry, 1950.
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The phase diagram of globular protein solutions : the role of the range of interaction
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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First principles phase diagram calculations in group IV carbides and Mg2SiO4 liquid from Molecular Dynamics
… a routine basis. These include computations of phase diagrams and transport properties in liquids. The sub-solidus phase diagrams of the binary systems TiC-ZrC, TiC-HfC, ZrC-HfC at ambient pressure are computed based on electronic structure and energy calculations within density functional …
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