Abstract
Room temperature Mößbauer spectra of ferrimagnetic spinels in the system Cdϰ 2+Fe1-ϰ 3+[Ni1-ϰ 2+Fe1-ϰ 3+]O4 have been interpreted using the polyhedron model which is based on six different environments at the A-site for the B-site Fe3+-ions. To each environment belongs one sextet with a characteristic magnetic splitting. An additional sextet is due to Fe3+-ions at the A-site.
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