Premium
Microstructures of gel‐grown ammonium hydrogen tartrate single crystals
Author(s) -
Desai C. C.,
Hanchinal A. N.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220612
Subject(s) - hillock , nucleation , tartrate , tartaric acid , microstructure , ammonium , materials science , ammonium chloride , crystallography , hydrogen , crystal growth , chemistry , chemical engineering , inorganic chemistry , organic chemistry , composite material , citric acid , engineering
Single crystals of ammonium hydrogen tartrate (AHT) have been grown in silica gels by employing the controlled reaction between ammonium chloride and tartaric acid. Transparent AHT crystals upto 24 × 4 × 3 mm 3 in size have been grown at room temperature. Optical and electron‐optical studies have been made on the various surface structures of {010} faces of the grown crystals. A variety of growth striations and growth hillocks have been observed. Growth layers modified by the presence of misaligned microcrystals have been illustrated. It has been suggested that two‐dimensional nucleation, spreading and pilling up of growth layers is mainly responsible for the growth of these crystals and the implications are discussed.