Preparation, structure and gas-sensing properties of γ-Fe2O3 and γ-Fe2O3-TiO2 thick films

In this paper, the preparation of gamma-Fe2O3 and gamma-Fe2O3-TiO2 thick films by a screen printing method is presented and their sensitivities and responses to acetone, ethyl alcohol, ammonia and liquefied petroleum gas are studied. The experimental results revealed that the gas sensitivity is strongly related to operating temperature, film composition and gas type. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.