Mössbauer Study of the Ulvöspinel, Fe2TiO4

The ulvospinel, Fe 2 TiO 4 , contains two kinds of ferrous ions; one is in the tetrahedral site and the other in the octahedral site. The electronic structures of both ferrous ions were studied by observing temperature dependence of the Mossbauer spectra in the temperature range 800°K–4.2°K. The behavior of the spontaneous magnetization which has maximum at about 100°K was also explained qualitatively by the obtained electronic structures.