Crystal Research and Technology
Cryst. Res. Technol. 41, 1167 (2006) - Abstract -

Growth of ytterbium tartrate trihydrate crystals in silica and agar-agar gels and their characterization

B. Want, F. Ahmad, and P. N. Kotru*

Department of Physics, University of Kashmir, Srinagar-190006, J & K, India
*Crystal Growth and Materials Research Laboratory, Department of Physics and Electronics, University of Jammu, Jammu-180006-India

Keywords crystal growth, ytterbium tartrate trihydrate, XRD, FTIR, SEM, thermal stability
PACS 81.10.Dn, 61.10.Nz, 67.80.Gb, 78.30.-j, 68.37.Hk
DOI 10.1002/crat.200610743

Single crystals of ytterbium tartrate trihydrate have been grown by gel method using silica and agar-agar gels as media of growth. The medium of growth influences the morphology of grown crystals, silica gel yielding single and polycrystalline in the form of spherulites whereas agar-agar gel leading to growth of single and twinned crystals. Materials grown as single crystals have been characterized by using optical and scanning electron microscopy (SEM), EDAX, XRD, FT-IR, CHN and thermogravimetric techniques. The stoichiometry of the grown single crystals is suggested to be Yb(C4H4O6)(C4H5O6)3H2O. The FT-IR spectrum shows the presence of singly as well as doubly ionized tartrate ligands. Results of thermal analysis indicate that the material is thermally stable up to a temperature of 200°C.




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