The perception of the Brazil plane (2 0 0) in M-type Cu1−xNaxO1 Nanocrystallite due to Na atom/ions doping derives Pyroelectricity application

The hydrothermal approach was carried out to make sodium doped (atom wt. % 0.05, 0.15, 0.25) copper II oxide Nanocrystallite. The one-dimensional twinning/Brazil (2 0 0) plane in the direction of {1 1 0} has been identified in CuO Nanocrystallite space group (C2/c). The visibility of sharp intense peak appears at 19.09 o (2-Theta) in powder X-ray diffraction pattern. The Monoclinic crystal structure of CuO provides the same Wyckoff site to Na atom/ions and hence the Na atom achieved the solubility limits up to 0.05 to 0.15 atomic weight percentage. The mean crystalline size has been determined using Scherer’s formula and the size range is in between 22 to 25 nm. From EDX analysis the atomic percentage of Cu decreases as doping (Na) concentration rises has been confirm, and it reveals that the Cu atoms have partially provide its Wyckoff site to Na atom / ions counterparts as content up to the certain limit. According to the optical observations, increasing the Na doping level causes an expansion of the energy band gap. SEM images confirm the rice grain nanostructure of the material.