Abstract
The Ni0.7-xMnxZn0.3Fe2O4 (x = 0.1–0.4) ferrites were characterized by X-ray diffraction, Transmission electron microscopy, X-ray photoelectron spectroscopy, and Mössbauer spectroscopy. The thick films of these ferrites were fabricated on a glass substrate to use as a Cl2 sensor. The ferrite thick film with composition x = 0.3 showed a selectively high response towards Cl2 gas at an operating temperature of 100 °C. The response varied from 115 to 212% for 20–300 ppm of Cl2 gas. The response time was found to be within 10 s while the recovery time was less than 15 s. The results were quite reproducible thus making this material a good sensor for Cl2 gas.
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