Open AccessGrowth and Characterization of Holmium Oxalate Heptahydrate Crystals
Author(s) -
Basharat Want,
Feroz Dar
Publication year - 2012
Publication title -
journal of crystallization process and technology
Language(s) - English
Resource type - Journals
eISSN - 2161-7686
pISSN - 2161-7678
DOI - 10.4236/jcpt.2012.24019
Subject(s) - holmium , monoclinic crystal system , thermogravimetric analysis , materials science , crystallography , oxalate , crystal (programming language) , crystal structure , chemistry , inorganic chemistry , organic chemistry , optics , laser , programming language , physics , computer science
Single crystals of holmium oxalate heptahydrate are grown by gel diffusion method using organic agar gel as a medium of growth. The crystals grow in the agar gel with hexagonal morphology having well defined habit faces Powder X-ray diffraction results show that the crystals belong to monoclinic system bearing the space group P21/c with cell parameters; a = 12.197
Å 
, b = 11.714 , c = 6.479 , α = 90°, β = 120.12°, γ = 90°, V = 799.6Å 3. Fourier transform Infrared spectrum of the crystals shows the presence of water and other associated functional groups. Thermogravimetric analysis support the presence of 7 H2O molecules associated with holmium oxalate crystal lattice. The thermal decomposition in the nitrogen atmosphere leads to the formation of holmium oxide as the final product
Å , b = 11.714 , c = 6.479 , α = 90°, β = 120.12°, γ = 90°, V = 799.6Å 3. Fourier transform Infrared spectrum of the crystals shows the presence of water and other associated functional groups. Thermogravimetric analysis support the presence of 7 H2O molecules associated with holmium oxalate crystal lattice. The thermal decomposition in the nitrogen atmosphere leads to the formation of holmium oxide as the final product