Spectroscopic methods in characterization of crystals and nanopowders

Witold Ryba-Romanowski 

Polish Academy of Sciences, Institute of Low Temperature and Structure Research (INTiBS), Okólna 2, Wrocław 50-422, Poland

Abstract

The purpose of this presentation is to outline spectroscopic methods that proved to be useful in characterization of crystalline materials. In general understanding the notion "spectroscopic" encompasses a wide variety of methods, e.g.: NMR, EPR, Mossbauer spectroscopy, optical spectroscopy etc. They differ in basic concepts and methodology. For the sake of clarity and conciseness the topic of presentation is restricted to spectroscopic methods that make use of optical frequencies and relay on acquisition and analysis of optical absorption and emission spectra and emission kinetics. They can be applied to crystals showing inherent ability to absorb and/or emit radiation as well as to crystals endowed with this ability by intentional doping with "probe" ions such as Eu, Cr. Principles of methods and also various kinds of information that can be extracted from analysis of spectral line positions, line-shapes and luminescence decay curves are considered. Examples of typical applications and results from our work are included.

 

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Presentation: Invited oral at Joint Fith International Conference on Solid State Crystals & Eighth Polish Conference on Crystal Growth, by Witold Ryba-Romanowski
See On-line Journal of Joint Fith International Conference on Solid State Crystals & Eighth Polish Conference on Crystal Growth

Submitted: 2007-01-16 11:03
Revised:   2009-06-07 00:44