A study of rare earth doped silicate and phosphate glasses

Bowron, Daniel Timothy (1994) A study of rare earth doped silicate and phosphate glasses. Doctor of Philosophy (PhD) thesis, University of Kent. (KAR id:38697)

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Abstract

The complementary techniques of X-ray diffraction and EXAFS have been applied to silicate

The silicate systems that have been studied are rare earth doped fibre optic preforms of

The phosphate glasses studied are rare earth metaphosphates of the composition R(PO3)3. X-ray diffraction measurements were taken showing that the network structure of these systems is essentially constructed from PO4 tetrahedra. The EXAFS experiments, performed on a range of glasses over the rare earth LIII edges, show a trend in the first shell distance rare earth-oxygen, consistent with the Lanthanide contraction, the rare earth ions occupy-ing sites with between six and eight-fold coordination of oxygen atoms about the rare earth ions.

Item Type: Thesis (Doctor of Philosophy (PhD)) Q Science > QC Physics Faculties > Sciences > School of Physical Sciences Suzanne Duffy 11 Mar 2014 11:57 UTC 29 May 2019 11:58 UTC https://kar.kent.ac.uk/id/eprint/38697 (The current URI for this page, for reference purposes)