Effect of s-, p-, d-, and f-block elements on the structure and properties of ammonium dihydrogen phosphate crystals |
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| Authors: | M Amutha G Ramasamy S P Meenakshisundaram S C Mojumdar |
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| Institution: | 1.Department of Chemistry,Annamalai University,Annamalainagar,India;2.University of New Brunswick,Fredericton,Canada;3.Department of Chemical and Biochemical Engineering,The University of Western Ontario,London,Canada;4.Department of Chemical Technologies and Environment, Faculty of Industrial Technologies,Tren?ín University,Púchov,Slovakia |
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| Abstract: | The influence of the s-, p-, d-, and f-block elements (Cs, Sb, Pd, and Ce) doping on the properties of ammonium dihydrogen
phosphate (ADP) crystals has been described. Incorporation of small quantity of dopants into the crystalline matrix is well
confirmed by energy dispersive X-ray spectroscopy (EDS) and inductively coupled plasma (ICP) techniques. The reduction in
the intensity observed in powder X-ray diffraction (XRD) of doped specimens and slight shifts in vibrational frequencies confirm
the lattice stress. Surface morphological changes due to doping of metals are observed by scanning electron microscopy (SEM).
The differential scanning calorimetry (DSC) curves show only a slight variation in endothermic peak temperatures. The sharpness
of the DSC peaks shows the good degree of crystallinity of the material. The cell parameters have been determined using single
crystal XRD analysis of pure ADP and ADP:Cs/ADP:Sb/ADP:Pd/ADP:Ce specimens. The influence of metals on the second harmonic
generation (SHG) efficiency is also investigated. |
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