Sökning: "fasdiagram"
Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet fasdiagram.
1. Structure and Properties Investigations of the La2Co1+z(Ti1-xMgx)1-zO6 Perovskite System
Sammanfattning : Perovskite based materials have great potentials for various energy applications and the search for new materials for uses in SOFCs has largely been concentrated to this class of compounds. In this search, we have studied perovskite phases in the system La2Co1+z(Ti1-xMgx)1-zO6, with 0 x 0.9 and z = 0.0, 0. LÄS MER
2. Phase Equilibrium-aided Design of Phase Change Materials from Blends : For Thermal Energy Storage
Sammanfattning : Climate change is no longer imminent but eminent. To combat climate change, effective, efficient and smart energy use is imperative. Thermal energy storage (TES) with phase change materials (PCMs) is one attractive choice to realize this. LÄS MER
3. Gaps, Traps and Lattices - Correlations in Small Quantum Systems
Sammanfattning : This dissertation investigates properties of two-dimensional many-body systems. Studies are performed using the Spin-Density Functional Theory with the Local Spin-Density Approximation, and numerical exact diagonalization. LÄS MER
4. Membrane-based nanocalorimetry for low temperature studies with high resolution and absolute accuracy
Sammanfattning : A differential, membrane-based nanocalorimeter has been designed and constructed for thermal studies of mesoscopic samples at low temperatures. The calorimeter is intended for sample masses from mg to sub-μg and a broad temperature range from above room temperature down to the sub-K region. LÄS MER
5. Vibrations in solids : From first principles lattice dynamics to high temperature phase stability
Sammanfattning : In this thesis I introduce a new method for calculating the temperature dependent vibrational contribution to the free energy of a substitutionally disordered alloy that accounts for anharmonicity at high temperatures. This method exploits the underlying crystal symmetries in an alloy to make the calculations tractable. LÄS MER