project crystal

1. XRD ANALYSIS:
The XRD spectrum obtained for monovalent metal ion
doped ADP crystal is shown in figure and the spectrum of
divalent metal ion doped ADP crystal is shown in figure. The
corresponding data such as 20 ,d-spacing obtained is displayed in
table .
The XRD pattern of pure ADP and ZnCl doped ADP crystal is
compared with XRD pattern of pure ADP crystal. In the present
work the presence of peaks for (110), (020), (211), (220), (310),
and (321) corresponding to 2=16.7479, 23.8222, 29.1252,
33.8016, 38.0153, 45.2315 for ZnCl doped ADP crystal and for
ZnCl doped ADP crystal the 2=16.8156, 23.8822, 29.2045,
33.0722, 45.3048. Figure shows highest peak for ZnCl doped ADP
at 2=29.1252, for which the intensity is also maximum. For ZnCl
doped ADP the highest peak is at 2=16.8156. On comparing the

2. two spectra the height of the peak is maximum for divalent metal
ion doped ADP crystal. This indicates that the divalent impurity
enhances the crystalline property.
From the data it is observed that both the grown crystals
have tetragonal system. The unit cell parameter of monovalent
metal ion added ADP crystal, a= b= 7.51031 A and c= 7.383895A
which is almost similar to the pure ADP crystal. For divalent
impurity a= b= 7.53746A and c=7.38282A which is very similar to
that of monovalent impurity added ADP crystal is V=416.4857A
and for divalent impurity added crystal is V=419.44239A . These
values agrees the reported values. The cell volume of monovalent
doped ADP crystal is smaller than the divalent doped ADP crystal.
From the XRD spectrum of pure monovalent and divalent
impurity added ADP crystal there is no additional peaks but only

3. change in the intensity of peaks is observed.