Titlebook: Halide Glasses for Infrared Fiberoptics; Rui M. Almeida Book 1987 Springer Science+Business Media Dordrecht 1987 chemistry.crystal.diffrac

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High Purity Components for Fluorozirconate Glass Optical Fibersow-loss heavy metal fluoride glass (HMFG) fiber is described. The specific areas of cation and anion purification techniques addressed are sublimation, [1] crystallization, electrolytic processing, [2] chemical vapor purification (CVP), [3] and solvent extraction. Additionally, reactive atmosphere p

Dysarthria

Chemical Analysis of Trace Impuritiesper-trillion level. These sensitivities are required for transition-metal and rare-earth ions, as well as for ammonium, hydroxide, and some other nonmetallic ions. Dissolved oxygen, carbon dioxide, and even argon are also of concern, as is dispersed elemental carbon..The materials-purification commu

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Role of Impurities in Halide Glassesing materials used. Among these elements which contaminate the optical glass quality, the most frequently met are the transition metals, the rare earths, the oxides, the carbon traces and some ions (NH.., Cl....) resulting from NH.HF. or CCl. treatment. The effects of such impurities on the glass pr

Habituate

Vibrational Spectroscopy Studies of Halide Glass Structurezed Raman scattering spectroscopy results for a series of heavy metal halide glasses, including binary glasses based on HfF., ThF., ZnCl. and ZnBr...The short range structures which best agree with the vibrational spectra are discussed, based on a model which includes two types of stretching force c

Dignant

Diffraction Studies of Halide Glassesparation, or partial separation, of individual component correlation functions. These are particularly important in structural investigations of the complex multicomponent fluorozirconate and other heavy metal fluoride glasses which are the subject of the present workshop. The structures of heavy me

Rinne-Test

Molecular Dynamics Simulations of Fluorozirconate Glass Structureis technique have concluded that Zr ions are on average in eightfold coordinated sites, whilst barium ions have coordination numbers between 10 and 11. ZrF. coordination polyhedra are principally linked by corner sharing although edge sharing also occurs, the proportion varying somewhat between mode

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deficiency

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Structural Relaxation in Fluoride Glassesions are that no property changes due to structural relaxation are likely to occur at ambient temperature over periods of tens of years. Some of the lower Tg glasses, however, did exhibit detectable structural relaxation on annealing at temperatures as low as 100°C over roughly a one year time perio