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Crystal Growth And Physical Property Characterization Of Complex Perovskite Oxides, Ling Li
Crystal Growth And Physical Property Characterization Of Complex Perovskite Oxides, Ling Li
Doctoral Dissertations
Bulk EuTiO3 [europium titanate], a quantum paraelectric antiferromagnet, is shown to exhibit multiferroic behavior in strained thin film form, which highlights the spin-phonon coupling in this system. We have investigated the structural, elastic, magnetic, thermal and transport properties of single crystals of EuTiO3 as well as doped system EuTi1-xBxO3 (B = Zr, Nb) [Zr and Nb doped europium titanate] utilizing various experimental techniques and theoretical calculations.
The cubic to tetragonal structural transition in pure EuTiO3 is characterized by a pronounced step-like softening of the elastic moduli near 288 K [kelvin], which resembles …
Discovery And Improvement Of Novel Metal Halide Scintillators For Radiation Detection Applications, Hua Wei
Discovery And Improvement Of Novel Metal Halide Scintillators For Radiation Detection Applications, Hua Wei
Doctoral Dissertations
Scintillation materials are in great demand for radiation detection applications. In this dissertation work, a series of new metal halide scintillation materials are presented. A comprehensive procedure of candidate scintillator screening, single crystal growth, scintillation properties characterizations, and scintillation mechanism investigations are established. The potential candidate materials are firstly synthesized by melt-freeze method to form polycrystalline. The scintillation properties of the polycrystalline specimen are characterized to select the most promising scintillators. The selected scintillators are grown into single crystals. Protocols including raw materials purification, materials pre-mixing, ampoule design, and furnace manipulation are developed to improve the scintillators’ performance.
Cerium-doped ternary …