Crystal Form of L-α-Alanine-Doped Triglycine Sulfate
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Single crystals of ferroelectric TGS were grown from solutions with various concentrations of L-α-alanine, and the variation of crystal form with the alanine content was examined. Some distinctive features dependent on the alanine content were found. The doped crystal grows more rapidly in the +b side of the seed than in the -b side. Therefore, the mirror plane normal to the b-axis of TGS disappears with alanine doping. The degree of asymmetry about the (010) plane increases with increasing alanine content. The form of highly doped crystal clearly shows the polar symmetry 2. The degree of asymmetry has no relevance to the domain structure.
- 社団法人応用物理学会の論文
- 1990-12-20
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