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Elastic and thermoelastic properties of l-glutamic acid hydrochloride

Published/Copyright: July 28, 2010

Abstract

The elastic constants, their temperature derivatives, and the thermal expansion of l-glutamic acid hydrochloride were measured. The crystals possess a remarkably high elastic and thermal anisotropy, which can be attributed to the preferential orientation of zigzag chains of hydrogen bonded molecules running parallel to the a3 axis. A similar behaviour was observed earlier in other hydrogen-bonded crystals like oxalic acid and acid salts of oxalic acid. Measurements of the piezoelectrical, electrooptical and nonlinear optical properties revealed only unexpected small effects, not high enough for a useful technical application.

Published Online: 2010-7-28
Published in Print: 1975-3-1

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