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Slichter, C.P. Garth, John Campbell 2011-05-19T17:03:46Z 2011-05-19T17:03:46Z 10000-01-01 1965 Th.e cubic electron spin resonance spectrum of Fe3+ in silver chloride has been studied at 1.3°K by the Electron Nuclear Double Resonance (ENDOR) technique. ENDOR lines from 6 to 24 megacycles were observed on each of the five electron spin resonance transitions and have been identified as lines due to four chlorine nuclei which are nearest neighbors to the iron ion. The angular dependence of the crystal field splitting of the electron resonance, as the orientation of the applied field is varied, proves that the iron is in a site of cubic symmetry. The an~ular variation of the ENDOR spectrum, as the~ield is rotated in a (100) plane, shows that the iron cannot be in a site of octahedral symmetry and that it therefore must be in a site of tetrahedral symmetry. ENDOR lines of both chlorine isotopes were identified. C135 ENDOR lines, characterized by Ms = +3/2 and Ms = -3/2 0 were studied with the applied field parallel to the (100) direction, and the best chlorine hyperfine and quadrupole coupling .constants were determined for both isotopes. It is found that these constants can be used to predict the locations'of all observed C135 and C137 ENDOR lines, but some discrepancies between the predicted spectrum and the observed lines remain which cannot be accounted for by effects of the cubic field splitting term in the spin- Hamiltonian. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-05-19T17:03:46Z No. of bitstreams: 1 1965_garth.pdf: 2509174 bytes, checksum: b6a851b63fe597a0d6c7cf266256321c (MD5) Made available in DSpace on 2011-05-19T17:03:46Z (GMT). No. of bitstreams: 1 1965_garth.pdf: 2509174 bytes, checksum: b6a851b63fe597a0d6c7cf266256321c (MD5) Previous issue date: 1965 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-05-19T17:03:46Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:15:16-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 6195869 http://hdl.handle.net/2142/23972 en 1965 John Campbell Garth magnetic resonance iron silver chloride cubic electric spin resonance spectrum Electron Nuclear Double Resonance (ENDOR) technique A magnetic resonance study of iron in silver chloride Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.