Studies of (90-x) P2O5xB2O310Fe2O3 glasses by Mossbauer effect and impedance spectroscopy methods

Investigations on electrical conductivity and dielectric properties of Na doped ZnO synthesized from sol gel method

“…Where j is the imaginary unit (j 2 = -1) and ω the angular frequency (ω = 2pf, f is the frequency), A 0 a constant independent of frequency and in F cm -2 S n-1 [35], and n is a dimensionless parameter ranging between zero and unity and determining the degree of deviation from an exact semicircle [36].The bulk resistance R b is the cross of axis with the impedance curve. These semicircles have been fitted by the software ORIGIN6.0 based on the following relationships.…”

“…The exponent s can be expected if the polarizability of involved material depends on the energy barrier for a simple hopping process between two sites [62]. Some reports, involving hopping models, indicate that s varies in the range from 0.6 to 1 and indicate that it depends on temperature and frequencies [36]. In order to identify the conduction mechanism in our electrolyte system, the exponent s is plotted as a function of temperature as depicted in Fig.7.…”

FTIR spectra and properties of iron borophosphate glasses containing simulated nuclear wastes

“…Vitrification has been one of the primary methods to deal with high-level radioactive wastes (HLWs) over the last half century, and it is, therefore, still of interest to many researchers [1][2][3][4][5][6]. Borosilicate glasses have been chosen as the first generation HLW host matrix due to their high chemical durability and good thermal stability.…”

Li-doped ZnO Sol-Gel Thin Films: Correlation between Structural Morphological and Optical Properties

“…The incorporation of Li 2+ is difficult due to the presence of native defects in ZnO lattice may cause the formation of different intrinsic defects which lead to the improved visible emission [44]. Such a behavior was brought reported in the p-type ZnO films [45]. …”