Js. Jiang et al., MECHANISM OF FORMATION OF UNIFORM MAGNETI TE COLLOIDAL PARTICLES .2. A STUDY OF MOSSBAUER-SPECTROSCOPY AT LOW-TEMPERATURE, Huaxue xuebao, 52(1), 1994, pp. 47-52
During the process of preparing uniform magnetite colloidal particles,
a series of samples which were aging at different time not more than
one hour were obtained by means of abruptly descending temperature Mos
sbauer spectra of these samples were measured at liquid nitrogen tempe
rature. The results showed that gamma-FeOOH was the intermediate produ
ct in the process of formation of uniform magnetite colloidal particle
s. The mechanism of formation of magnetite colloidal particles was giv
en as follows: [GRAPHICS]