Materials Research Bulletin, Vol.31, No.9, 1121-1125, 1996
The Preparation and Characterization of Electric Property of a New Organic-Crystal - Urea-(+)Tartaric Acid
A large single crystal of urea-(+)tartaric acid (UT) has been grown from aqueous solution by slow cooling. The structure of UT consists of urea and (+)tartaric acid held by three-dimensional hydrogen bonds. The piezoelectric constants were measured by the transmission method at 20 degrees C.