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Terahertz Spectroscopy Of Magnetic Metal Oxides, Evan Constable
Terahertz Spectroscopy Of Magnetic Metal Oxides, Evan Constable
University of Wollongong Thesis Collection 1954-2016
The optical excitation and control of spins in magnetic materials promises new avenues for devices that couple photonic and spintronic functionality, with the prospects of a new paradigm in information processing. An understanding of the behaviour of the magnetic interactions in candidate materials is essential to the design of devices that exhibit these desirable properties. Terahertz radiation presents an ideal medium for the study of spin dynamics in magnetic materials. Its low energy in the meV range is equivalent to the many weak magnetic coupling mechanisms present. Terahertz radiation is therefore also complementary to established methods that probe these mechanisms …
Perovskite Titanium Nitride Oxides And Vanadium Phosphates: Synthesis And Characterization, Spencer Hampton Porter
Perovskite Titanium Nitride Oxides And Vanadium Phosphates: Synthesis And Characterization, Spencer Hampton Porter
University of Wollongong Thesis Collection 1954-2016
The synthesis, crystal structures, ordering, magnetic, optical, water oxidizing, and electronic properties of RTiNO2 (R = La - Nd) have been investigated. Neutron powder diffraction indicates that CeTiNO2 and PrTiNO2 crystallize with orthorhombic Pnma symmetry (Ce: a = 5.5580(5), b = 7.8369(7), and c = 5.5830(4) Å; Pr: a = 5.5468(5), b = 7.8142(5), and c = 5.5514(5) Å) as a result of a-b+a- tilting of the titanium octahedra. Careful examination of the NPD data, confirms the absence of long range anion order in both compounds, while apparent superstructure re …