Studies of vibronic effects on the electron paramagnetic resonance of orbital triplets: transition metal ions in alkaline earth halides

Simple item page
dc.contributor.advisorEstle, Thomas L.en_US
dc.creatorPrater, Rudy Lesteren_US
dc.date.accessioned2018-12-18T21:16:39Zen_US
dc.date.available2018-12-18T21:16:39Zen_US
dc.date.issued1977en_US
dc.descriptionText includes handwritten formulasen_US
dc.description.abstractThe effects of vibronic coupling on the electron paramagnetic resonance of transition metal ions that have orbital triplet ground states in alkaline earth halides have been investigated. Spectra have been obtained for two impurity ions, Cr2+ and Cr3+. The Cr2+ ion in CdPg and CaFg occupies a site that has axial symmetry along (lio) axes of the crystal. The Spin Hamiltonian for this ion which has a spin of two in the ground vibronic state is derived and a preliminary determination of some of the Spin Hamiltonian parameters has been made. According to currently held theoretical ideas, these data can be interpreted as a Static Jahn-Teller Effect in which the electronic triplet state couples to a vibrational doublet state and a vibrational triplet state with comparable coupling strengths. The Cr3+ ion in CaFg bas also been studied. It occupies a site that has axial symmetry along (ill) axes of the crystal. This behavior is predicted from a Static Jahn-Teller Effect in which the triplet electronic state couples predominantly to a triply degenerate vibrational mode. The Cr3+ ion has a spin of (3/2) in the ground vibronic state and the Spin Hamiltonian for this ion is derived. The temperature dependence of the data is used to give a rough estimate of the zero field splitting parameter, D, which agrees with the frequency dependence of the effective g-value.en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent295 ppen_US
dc.identifier.callnoThesis Phys. 1977 Prateren_US
dc.identifier.citationPrater, Rudy Lester. "Studies of vibronic effects on the electron paramagnetic resonance of orbital triplets: transition metal ions in alkaline earth halides." (1977) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/104045">https://hdl.handle.net/1911/104045</a>.en_US
dc.identifier.digitalRICE1671en_US
dc.identifier.urihttps://hdl.handle.net/1911/104045en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleStudies of vibronic effects on the electron paramagnetic resonance of orbital triplets: transition metal ions in alkaline earth halidesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
RICE1671.pdf
Size:
10.86 MB
Format:
Adobe Portable Document Format
Download
Collections
Rice University Theses and Dissertations