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http://hdl.handle.net/11375/19222
Title: | Investigation of frustrated magnetism in double perovskites |
Authors: | Marjerrison, Casey |
Advisor: | Gaulin, Bruce |
Department: | Physics |
Publication Date: | 2016 |
Abstract: | This investigation studies the structural and magnetic properties of the double perovskites Ba2YRuO6, Ba2YReO6,Ba2YOsO6, Ba2MgReO6, Ba2ZnReO6, Ba2Y2/3ReO6, Ba2MgOsO6, Ba2ZnOsO6, Ba2CdOsO6, La2LiRuO6, and La2LiOsO6. These compounds were prepared as powders using conventional solid state techniques. Structural characterization was performed with room temperature powder x-ray diffraction, and for most compounds, room temperature and low temperature powder neutron diffraction. The double perovskites in this investigation can be categorized as cubic Fm-3m and monoclinic P21/n. Over the ranges of temperatures measured, no space group changes were detected. Magnetic susceptibilty, magnetic hysteresis, and heat capacity measurements revealed a variation of ground states and magnetism across this selection of double perovskites. Inelastic neutron scattering experiments gave evidence for spin gap formation in almost all of the compounds. |
URI: | http://hdl.handle.net/11375/19222 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Marjerrison_Casey_A_finalsubmission2016April_MSc.pdf | Thesis | 5.86 MB | Adobe PDF | View/Open |
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