Zinc　ferrite　is　a　promising　sensor　material.　In　this　paper,　thin　films　of　nanocrystalline　zinc　ferrite　were　deposited　on　alumina　substrates　by　nebulization　of　a　0.01-M　solution　of　a　mixture　of　ZnCL2　and　FeCl3　in　ethanol　(Zn:Fe=1:2)　followed　by　pyrolysis　and　annealing　in　flowing　air.　The　resulting　films　were　characterized　by　X-ray　diffraction　and　scanning　electron　microscopy,　and　the　gas-sensing　properties　of　as-deposited　films　were　also　investigated.