Humidity sensing properties of ferrite based Al-Cd nanoparticles as a fast response sensor device

Abstract

The humidity sensing performance of Al-Cd ferrite nanoparticle manufactured by chemical co-precipitation method. The humidity sensing properties of the presented Al-Cd ferrite sensor was investigated by exposing it to a broad humidity range of 15-90% at room temperature. The humidity sensing properties of the sample was tested by impedance measurements by varying the relative humidity from 15 to 95%. According to the investigation, samples impedance decreases sharply, it has an acceptable sensitivity, quick response and recovery time, a narrow hysteresis and good long term stability. Also its dependence of complex impedance spectra, measured on the relative humidity, operating temperature and on the measuring frequency is shown and explained. (C) 2016 Elsevier B.V. All rights reserved.