Abstract:
Nano science represents one of the most popular powerful tools for controlling and changing the physical properties of matter. It is now widely used in many applications. One of the most popular known one is the field of electronics, where the optical and electrical properties of matter are important. This encourages to do this work.
In this work 8 Na Cl samples were prepared and crushed for different micro sizes and nano sizes using crushing machine. Before that the samples where purified by being dissolved in water that flows through sever and dried using drying machine. Their optical, electrical and magnetic properties were investigated by UV, FTIR and XRD. The ultraviolet - visible (UV) determines absorption coefficient, energy gap and conductivity. Fourier transform infra-red spectrometer (FTIR) determines the chemical energy bonds. The X-ray diffraction (XRD) technique determines the crystal structure as well as the nana structure.
The crushing of Nacl into small particles having different micro sizes shows that this causes their physical properties to change. It was found that their nano size increases upon increasing their micro size, where each micro particle consists of aggregates of nano crystals. The absorption coefficient, crystal spacing increases upon increasing the nano and micro size. The energy gap decreases upon increasing the nano and micro size. The optical conductivity also increases for a wide range of wavelengths. The electric conductivity, permittivity, refractive index and magnetic permeability decreases for short wavelengths and increases for long wave lengths upon increasing the nano and micro size
