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UBC Theses and Dissertations

Nuclear magnetic resonance in single crystals of tin and aluminum. Jones, Edward Peter


Nuclear magnetic resonance studies in single crystals of aluminum and tin have been done at liquid helium temperatures. The Knight shift in tin has been studied as a function of crystal orientation in a constant magnetic field for different values of field and temperature. The anisotropic Knight shift in tin was observed directly for the first time. The line width of the tin resonance was also studied and found to depend on the crystal orientation in the magnetic field. The second moment of the line has been calculated in terms of dipole-dipole interactions and indirect exchange interactions between nuclei of different magnetic moments and compared with the experimental results. The Knight shift was studied as a function of external field for both tin and aluminum in a search for de Haas-van Alphen type oscillations. No indication of these was found. An upper limit for this effect was determined for each sample.

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