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Determination of L-Alanine Content in TGS Crystals by Optical Activity

An optical method which allows quantitative determination of L-alanine contents in L-alanine doped TGS crystals is described. L-alanine content was determined in (001) and (110) growth pyramids of LATGS crystals grown above and below Tc. Relation between Eb and alanine content in crystals established from Devonshire's theory is in reasonable agreement with the experimerttal results.