The Rearrangement of the Defect Structure of Magnetite
in a Vortex Magnetic Field According
to the Mssbauer Spectroscopy Data

F. Kh. Chibirova

Karpov Research Institute of Physical Chemistry, ul. Vorontsovo pole 10, Moscow, Russia

e-mail: chibir@cc.nifhi.ac.ru

Received November 13, 2007

Abstract—The rearrangement of the defect structure of ferrosoferric oxide Fe₃O₄ (magnetite) was studied by
Mössbauer spectroscopy after treatment in a vortex magnetic field. The experimental dependence of the degree
of structure imperfection of magnetite s on the duration of treatment in a magnetic field t_MF was obtained. The
s(t_MF) function nonmonotonically oscillated over the range 0–100 s and experienced a relaxation transition to
a new constant value, which was larger at t_MF ~ 300 s. The conclusion was drawn that very fast complex pro-
cesses occurred in the crystal structure in a magnetic field, which caused irreversible changes in the defect struc-
ture of magnetite.

DOI: 10.1134/S0036024408110320

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