Search for dissertations about: "Williamson Hall"
Found 5 swedish dissertations containing the words Williamson Hall.
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1. Magnetron Sputter Epitaxy of GaN
Abstract : Electronic-grade GaN (0001) epilayers have been grown directly on Al2O3 (0001) substrates by reactive DC-magnetron sputter epitaxy (MSE) from a liquid Ga sputtering target in an Ar/N2 atmosphere. The as-grown GaN epitaxial film exhibit low threading dislocation density on the order of ≤ 1010 cm-2 obtained by transmission electron microscopy and modified Williamson-Hall plot. READ MORE
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2. Effects of grinding variables on structural changes and energy conversion during mechanical activation using line profile analysis (LPA)
Abstract : The mechanical treatment of solids is one of the most common and widely used operations with which man has been concerned from the very beginnings of history of civilization. At the present, mechanical activation has a wide range of application potential. READ MORE
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3. Mechanical activation of hematite using different grinding methods with special focus on structural changes and reactivity
Abstract : The mechanical treatment of solids is one of the most common and widely used operations which man has been concerned from the very beginning of the history of civilization. Nowadays, mechanical activation has a wide range of application potentials. READ MORE
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4. Synthesis and characterization of zeolite films and membranes
Abstract : In this work, a seeding technique was used to synthesize films and membranes of FAU, LTA and MFI type zeolites. In the first part, hydrothermal growth was performed without organic template molecules, which resulted in template-free zeolite films and membranes. READ MORE
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5. Magnetron Sputter Epitaxy of GaN Epilayers and Nanorods
Abstract : In this research, electronic-grade GaN(0001) epilayers and nanorods have been grown onto Al2O3(0001) and Si(111) substrates, respectively, by reactive magnetron sputter epitaxy (MSE) using liquid Ga as a sputtering target. MSE, employing ultra high vacuum conditions, high-purity source materials, and lowenergy ion assisted deposition from substrate biasing, is a scalable method, lending itself to large area GaN synthesis. READ MORE