Synthesis, structure and electrical properties of Ti4+ and Zr4+ doped MoO3 transition metal oxide

Abstract

Hereby, we report synthesis, structural and electrical properties of transition metal oxides of the type Mo0.99Ti0.01-xZrxO3 [x = 0.0, 0.01]. The materials synthesized by solid state route were double calcined before characterizations. We employed a reliable X-ray diffraction characterization technique to confirm the crystal structure acquired by these samples. We used room temperature frequency dependent dielectric measurements to investigate the electric behaviour of these transition oxide materials. Both transition metal ion substituted molybdenum oxides on analysis of XRD data reveals their crystallization into the orthorhombic phase with space group Pbnm. The analysis of frequency dependent room temperature dielectric characteristics of these samples inferred these samples to be better dielectric materials. These transition metal oxides were found to have lower values of dielectric permittivity and dielectric dissipation thereby makes them ideal for high-frequency applications. Comparatively, the dielectric constant and the dielectric loss for Zr-doping are rather low. However, the Ti doped MoO3 displays more smooth behaviour. Furthermore, this piece of work throws light on electrical properties viz. ac conductivity, electric impedance and electric modulus of the as synthesized transition metal oxides.