Humidity sensors based on LaFeO3 ceramics prepared by Sol-Gel method

Abstract

LaFeO3 material is fabricated by the standard sol-gel technique using lanthanum oxide and iron nitrate as starting raw material. The material synthesized by sol-gel technique is found highly porous. The sol-gel route synthesized material is further characterized by XRD, SEM, and apparent porosity. The synthesized material is found microporous that provide more number of active sites on the surface for water absorption. So LaFeO3 material is found very excellent material for the application of humidity sensors. LaFeO3 material is shaped to pallets followed by electroding and then an impedance characteristic is tested. All the analysis performed on LaFeO3 material is found highly susceptible for the application as humidity sensing material.