$$\chi ^{(3)}$$ χ ( 3 ) measurement and optical limiting behaviour of novel semi-organic cadmium mercury thiocyanate crystal by Z-scan technique

Third order nonlinearity examined by pulsed and CW lasers: an organic urea barbituric acid (UBA) single crystal for optical limiting application with DFT study

“…From the ac conductivity curve, the conductivity value is found to be very low at lower frequency region, while at higher frequency region the ac conductivity value increases gradually. As seen from D.C curve, the D.C conductivity value is greater in lower frequency region and while the frequency is increased from lower region to higher frequency region, the dc conductivity value decreases in higher frequency region [62]. At low temperatures, the UBA crystal exhibits conduction to be minimum which may be since the least of Gibb's free energy.…”

“…Changing the dielectric constant from higher frequencies shows that the polarizations at higher frequency regions are inactive with exception for electronic polarization. These changes represent the dielectric constant to decrease with rise in temperature, which can be allocated to the thermal agitation [62]. From the tan δ curve, it is observed that the dissipation of energy is naturally greater at lower frequency region since mostly the polarizations are active over this region resulting in energy loss to be high.…”