284237.fig.001a
(a)
284237.fig.001b
(b)
Figure 1: (a) X-ray diffraction patterns of Pure NiO, SnO2, and Ni doped SnO2 powder samples at different Ni doping concentrations. (b) XRD patterns of Ni doped SnO2 powder samples in 2θ range of 26°-27°.