Premium
MÖSSBAUER SPECTRA OF ALUMINOUS GOETHITES (α‐FeOOH)
Author(s) -
GOODMAN B. A.,
LEWIS D. G.
Publication year - 1981
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1981.tb01711.x
Subject(s) - goethite , mössbauer spectroscopy , aluminium , materials science , particle (ecology) , mineral , spectral line , iron oxide , aluminium oxide , oxide , mineralogy , metallurgy , crystallography , chemistry , geology , physics , oceanography , adsorption , astronomy
Summary Synthethic goethite specimens have been prepared by a variety of experimental methods, and it has been possible to incorporate large quantities of Al ( 30 mol %) into the structure. A range of particle sizes also obtained and these were dependent upon both experimental conditions and the extent of aluminium substitution. Mössbauer spectra have been recorded for a large number of samples and show that high levels of A1‐substitution combined with small particle sizes have a dramatic effect on the magnetic properties of the mineral. The application of Mössbauer spectroscopy to the identification of secondary iron oxide phases in soils is thus complicated by aluminium substitution and some of the difficulties are discussed.