Frequency and Temperature Effects on Trapped Centers Activation and Charge Transport Mechanism in Y0.2Ca0.8MnO3

Perovskite type manganites Y _1 − x Ca _xF MnO ₃ in the composition range of x = 0.2 of orthorhombic crystal structure was synthesized through solid state route. Synchrotron XRD was cast-off for checking phase configuration using XRD and with support of freely available Fullprof program. Different structural parameters were measured after refinement of data. Impedance spectroscopy was useful to discover response of diverse electrical characteristics like conduction mechanism, electrical conductivity, different relaxation processes and capacitance of probed sample under the variation of temperature and frequency. Electrical constraints of grain boundaries specify a deviation in electrical transport phenomena about 110°K termed as T _MI . Different electrical parameters were evaluated in terms of temperature and frequency effects on conduction mechanism through hopping having double exchange through Mn ³⁺ and Mn ⁴⁺