Growth and characterization of L-alanine and L-valine doped triglycine sulphate crystals

被引：17
|
作者：
Aravazhi, S
Jayavel, R
Subramanian, C
机构：
[1] Crystal Growth Centre, Anna University
来源：
MATERIALS RESEARCH BULLETIN | 1997年 / 32卷 / 11期
关键词：
organic compounds; crystal growth; dielectric properties; ferroelectricity;
D O I：
10.1016/S0025-5408(97)00131-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single crystals of triglycine sulphate (TGS) doped with L-alanine and L-valine were grown in aqueous solutions by a slow cooling method. The changes in solubility and metastable zone width due to the doping have been studied. The pyroelectric and dielectric measurements made on these samples reveal that the doping of amino acids enhanced the ferroelectric transition temperature (T-c) and pyroelectric figure of merit. The microhardness of doped TGS crystals was found to be lower than that of pure crystals. FTIR spectra of the doped crystals show broadening of peaks, compared to those of pure crystals. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：1503 / 1513
页数：11
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