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Thermoanalytical and morphologic study of gel‐grown silver (I) chromate single crystals
Author(s) -
Büchele W.,
Lentz A.
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.2170220109
Subject(s) - chromate conversion coating , octahedron , crystallography , differential thermal analysis , materials science , diffraction , powder diffraction , single crystal , morphology (biology) , mineralogy , chemistry , crystal structure , chromium , metallurgy , optics , geology , paleontology , physics
Rhombic single crystals of silver (I) chromate were grown in silica gels. They were of tabular shape with a size of a = 0.3, b = 30 and c = 3 mm. The morphology of the crystals was interpreted by a detailed discussion of the structure. Silver (I) chromate consists of (100) layers connected along the a ‐axis by silver atoms in octahedral coordination. The crystals were characterized by their powder diffraction data. Differential thermal analysis studies were made by use of single crystals. The enthalpy of the phase transformation taking place at 485.2 °C is found to be Δ H tr = 8.8 kJ/mol.