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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 7 of 7 for “"Mg Diffusion"”.
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Thermodynamics and kinetics of Mg intercalation for multivalent cathode applications
… pairs an energy-dense MV metal anode (such as Mg) with a high voltage cathode has the potential to surpass the energy densities achieved by current Li-ion batteries, along with improved safety and lower costs. However, moving into newer chemistries leads to newer challenges, such as developing …
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An Experimental and Theoretical Investigation into Mg-ion Battery Electrodes using Nuclear Magnetic Resonance Spectroscopy
… and theoretical approach on studying Mg-ion battery electrode materials, where Nuclear Magnetic Resonance (NMR) spectroscopy plays a central role in identifying the local structure and dynamics of the magnesium ions. Density Functional Theory (DFT) techniques are used extensively to …
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Modification of space charge transport in nanocrystalline cerium oxide by heterogeneous doping
… was developed in which thin NiO and Gd203 diffusion sources were deposited on the ceria surface and annealed in the temperature range of 7008000C in order to diffuse the cations into the ceria layer exclusively along grain boundaries. Time-offlight secondary ion mass spectrometry (ToF-SIMS) …
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Einfluss der Lumineszenzmechanismen und der elektrischen Kontakte auf die Effizienz von InGaN Leuchtdioden
… Realisierung von ohmschen p-Kontakten auf GaN:Mg-Schichten wurden transparente ITO-Kontakte verwendet. Durch die Verwendung einer In-reichen Zwischenschicht zwischen den ITO-Kontakten und der GaN:Mg-p-Kontaktschicht reduziert sich die effektive Höhe der Schottky-Barriere, wodurch die …
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Kurzwellige Diodenlaser auf der Basis der Gruppe III-Nitride
… InGaN-Quantenfilme mit Hilfe unterschiedlicher Mg- und Si-Dotierprofile. Hierbei zeigte sich, dass vor allem die Mg-Dotierprofile sehr sorgfältig eingestellt werden müssen. Ist die Mg-Konzentration in der Nähe des aktiven Bereichs zu gering, so ist die effiziente Injektion der Löcher in den …
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Cratonic eclogite xenoliths - formation and evolution of the subcontinental lithospheric mantle
… garnet ± kyanite/zoisite. Based on Si, Al and Mg diffusion profiles it can be inferred that exsolution was controlled by chemical exchange in an isochemical system. Similarly, an interpretation can be made for the variable HREE fractionation of intermediate composition between the exsolutions …