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 5 of 5 for “"ionic crystal"”.
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Development of phonon-polarization THz spectroscopy, and the investigation of relaxor ferroelectrics
… measurements of a relaxor ferroelectric crystal, in particular KTao0.982Nb0.018O3 (KTN 1.8). THz spectroscopy has emerged as an important probe for a wide variety of systems with the development of pulsed THz radiation sources and time-domain detection methods. Four factors motivate the …
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Bond length and bonded radii variations in sulfide molecules and crystals containing main group elements
… those observed in chemically similar sulfide crystals. A least-squares analysis shows that R<sub>t</sub>(XS) can be estimated by the equation R = l.83(s/r)<sup>-0.21</sup>, where s is the Pauling bond strength and r is the row number of the X-cation in the periodic table, with 98% of the …
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Space charge resulting from imperfections and effects thereof in ionic crystals
… defect distribution is calculated for a pure ionic crystal of the type M+X=. It is shown that the normally assumed state of bulk electrical neutrality is a consequence of the presence of potential fields beneath the surfaces and around edge dislocations. These potential fields~ resulting from …
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It's Not a SKZCAM! Accurate Surface Chemistry at Low Cost
… framework applicable to a wide range of ionic crystal structures, surface terminations, and adsorption/defect sites. In particular, it leads to small cluster sizes that are amenable for CCSD(T), enabling us to resolve long-standing debates across surface chemistry. For example, we reach …
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Spin dynamics of bulk and quasi-two-dimensional metal halide based perovskite semiconductors
… how the coupling between excitons and the soft ionic crystal lattice impacts the spin relaxation of exciton states in BA<sub>2</sub>FAPbI<sub>7</sub>. Faraday rotation measurements were obtained by Dr Soumen Ghosh and Dr Franco V. A. Camargo in close collaboration with me. We report that …