Superexchange coupling in fluorides and fluoro-complexes of elements in the first transition series.

dc.contributor.author	Kaseno, S. S. I.
dc.date.accessioned	2009-04-17T16:02:50Z
dc.date.available	2009-04-17T16:02:50Z
dc.date.created	1961
dc.date.issued	1961
dc.degree.level	Masters
dc.degree.name	M.Sc.
dc.description.abstract	Theories of magnetism with special reference to the indirect exchange mechanism and ligand field theory are discussed. The magnetic susceptibilities of VF3, MnF3, NiF 2-MgF2, K2NiF4-K2 MgF4, and K3NiF6-K2.8AlF 5.8 were studied range of 90°K to 300°K. The effective magnetic moments of the paramagnetic ions increases as their concentration in the solid solutions decreases. This is explained as being due to the presence of indirect interactions between paramagnetic ions in the pure substance which are decreased by magnetic dilution. It was found that the moments are still dependent upon temperature even at infinite dilution. This behaviour is ascribed to the orbital contribution which is itself temperature dependent. Evidence is adduced for the presence of Ni (III) ion impurities in the NiF2-MgF2 system when it is contaminated with traces of oxide.
dc.format.extent	109 p.
dc.identifier.citation	Source: Masters Abstracts International, Volume: 45-06, page: 3162.
dc.identifier.uri	http://hdl.handle.net/10393/10847
dc.identifier.uri	http://dx.doi.org/10.20381/ruor-17036
dc.publisher	University of Ottawa (Canada)
dc.subject.classification	Chemistry, Inorganic.
dc.title	Superexchange coupling in fluorides and fluoro-complexes of elements in the first transition series.
dc.type	Thesis

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