Bulg. J. Phys. vol.45 no.3 (2018), pp. 275-284



Impedance, Modulus and Spectroscopic Analysis of Gel-Grown Pure Lead Levo-Tartrate Crystals

H.O. Jethva, M.J. Joshi
Department of Physics, Saurashtra University, Rajkot 360005, India
Abstract. Various metal tartrate crystals find different applications. In the present study pure lead levo-tartrate crystals were grown by using silica hydro gel as the growth medium. Long, dendrite, dense and white crystals were grown at the gel-liquid interface. Using complex impedance spectroscopy (CIS) technique, the complex impedance (Z*) and modulus (M*) properties of the crystals were analyzed as a function of frequency within the range from 100 Hz to 400 kHz at room temperature. The complex impedance and modulus plots exhibited the presence of grain (bulk) as well as grain boundary contributions in the crystals. The M'' versus frequency plot revealed two peaks, while the Z'' versus frequency plot revealed only one peak. It has been found that these peaks are of Debye type nature.

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