Study on green synthesis characterization and electrical properties of cerium oxide (CeO2)-doped vanadium pentoxide (V2O5) nanoparticles for strain gauges

Vanadium pentoxide (V2O5) is a transition metallic oxide which is suitable for strain gauge application because of its good electrical properties and conductivity. Considering this, cerium oxide (CeO2)-doped vanadium oxide (V2O5) nanoparticles are synthesized with the varied concentrations of 5, 10, and 15 wt%, to study its characteristics for fabrication of thin film strain gauges. The structural, transmission spectral, morphological, compositional and the electrical properties of synthesized nanoparticles are characterized using XRD, FTIR, SEM, HRTEM, EDX and CLR meter respectively. The characterization results depict favorable changes within the nanoparticle samples on the addition of dopant. The transformation from amorphous to crystalline phase orthorhombic cubic structure is visible from the x-ray diffraction results. The morphological data depict improvement in the structural appearance of the samples without any cracks on its surface. The shift in transmission spectral peaks towards the lower wave number indicates the improved electronic transitioning due to high activation energy. The drastic improvement in its conductivity from 1 to 4.3 S/m, along with better temperature characteristics specially in case of 10-wt% CeO2:V2O5, depicts the improved sensitivity of the samples. The resulting gauge factor of 45.21 obtained through four-point bending arrangement highlights the better strain resistance behavior of synthesized nanoparticles.