Crystal Research and Technology
Cryst. Res. Technol. 37 (2002) 1127 - Abstract -

R. V. S. S. N. Ravikumar, A. V. Chandrasekhar*, B. J. Reddy*, Y. P. Reddy*, K. Ikeda

Department of Advance Materials Science and Engineering, Yamaguchi University, Tokiwadai, UBE-755 8611, Japan
*Department of Physics, S.V. University, Tirupati 517 502, India

X Ray Powder Diffraction, DTA and Vibrational Studies of CdNH4PO4.6H2O Crystals

Cadmium Ammonium Phosphate Hexahydrate (CAPH) is analogous to naturally occurring struvite. CAPH crystals are grown by slow evaporation technique. These crystals are characterised by X-ray, TG-DTA and Infrared studies. Powder X-ray pattern indicates the orthorhombic crystal structure analogous to struvite. TG DTA analysis suggests loss of water of hydration (6H2O) between 113 and 391ºC. Later the substance melts and only Cd remains around 780ºC. Infra Red spectrum is characteristic of H2O, PO43- and NH4+ radicals.

Keywords: XRD, TG-DTA, IR, orthorhombic, cadmium ammonium phosphate hexahydrate (CAPH), cell parameters


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