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Neutron diffraction study of titanomagnetites
Author(s) -
Boysen H.,
Schmidbauer E.
Publication year - 1984
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl011i003p00165
Subject(s) - neutron diffraction , spinel , diffraction , magnetization , neutron scattering , materials science , x ray crystallography , ion , crystallography , scattering , mineralogy , condensed matter physics , geology , chemistry , crystal structure , physics , magnetic field , optics , metallurgy , organic chemistry , quantum mechanics
Using neutron diffraction, the cation distribution was determined in compositions of the titanomagnetite spinel series Fe 3−x Ti x O 4 O ≤ × ≤ 1, with x = 0.6 and 1 at room temperature. The knowledge of the correct cation distribution of x = 0.6 is necessary for predicting the change in magnetization of ozeanic pillow basalts with oxidation. For x = 0.6, Ti ions occupy exclusively B‐sites of the spinel lattice with the possible exception of a minute number occupying A‐sites. In order to explain the diffraction pattern for x = 1, the occupation of additional kinds of sites are discussed. The diffuse scattering in the background for both compounds shows broad peaks which are indicative of magnetic and chemical short range order.