Xj. Yang et al., PREPARATION, CHARACTERIZATION AND GAS-SENSITIVE PROPERTIES OF NANO-CRYSTALLINE CR2O3-FE2O3 MIXED OXIDES, Science in China. Series B, Chemistry, life sciences & earth sciences, 41(4), 1998, pp. 442-448
A series of Fe2-xCrxO3 (r = 0, 0.4, 0.8, 1.2, 1.6, 2.0) mixed oxides h
ave been prepared with the chemical coprecipitation method and charact
erized by specific surface area, transmission electron microscopy (TEM
), powder X-ray diffraction (XRD), IR and Mossbauer spectroscopy. Sing
le-phase Fe-Cr mixed oxide nano-crystalline powders with corundum stru
cture are obtained. and the results of the five characterization metho
ds are well accordant with each other. Furthermore, gas-sensitive prop
erties of the sensors made of the oxide powders have been studied.