Search for dissertations about: "dopant"
Showing result 21 - 25 of 112 swedish dissertations containing the word dopant.
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21. The Effect of Various Dopants on Diamond Growth : A Combined Experimental & Theoretical Approach
Abstract : Diamond is a unique material with many exceptional properties. It has therefore been proven to be an important material for many applications. Moreover, the introduction of dopant species into the gas phase during the CVD growth process has been shown to strongly influence not only the properties and morphology of diamond, but also the growth rate. READ MORE
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22. Solid state proton conductors: hydrated perovskites and hydrated alkali thio-hydroxogermanates
Abstract : This thesis concerns experimental studies of hydrated perovskites and hydrated alkali thio-hydroxogermanates, two classes of solid state proton conductors which are promising to be used as electrolytes in future intermediate temperature (200-500°C) fuel cells.This is an attractive temperature range for many applications but for which today's available electrolytes do not show satisfactory performance. READ MORE
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23. Local structure and dynamics in proton conducting perovskite oxides: insights from quasielastic neutron scattering and infrared spectroscopy
Abstract : Proton conducting oxides have been extensively studied in the past decade due to their potential application in a number of energy related devices such as solid oxide fuel cells, hydrogen sensors, and steam electrolyzers. However, the final industrialisation of these materials depends on unlocking fundamental questions about the relationship between their atomic structure, localized proton dynamics and proton conductivity. READ MORE
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24. The Influence of Dopants on the Growth of Diamond by CVD
Abstract : Diamond is an important material in many industrial applications (e.g., machining of hard materials, bio-electronics, optics, electronics, etc.) because of its exceptional properties such as hardness, tolerance to aggressive environments, compatibility with human tissues, and high carrier mobility. READ MORE
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25. Fundamental Properties of Functional Magnetic Materials
Abstract : Magnetic properties of powders, thin films and single crystals have been investigated using magnetometry methods. This thesis provides analysis and conclusions that are supported by the results obtained from spectroscopic and diffraction measurements as well as from theoretical calculations. READ MORE