A magnetic resonance study of iron in silver chloride

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2011

Author dc:creator

• Garth, John Campbell

Contributors dc:contributor

• Slichter, C.P.

• magnetic resonance
• iron
• silver chloride
• cubic electric spin resonance spectrum
• Electron Nuclear Double Resonance (ENDOR) technique

Statement dc:rights

• 1965 John Campbell Garth

Language dc:language

en

Identifier

6195869

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23972