Research output: Contribution to journal › Article
Synthesis and Thermal Behavior of Fe3O2(BO4) Oxoborate. / Biryukov, Ya. P.; Bubnova, R. S.; Filatov, S. K.; Goncharov, A. G.
In: Glass Physics and Chemistry, Vol. 42, No. 2, 2016, p. 202–206.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synthesis and Thermal Behavior of Fe3O2(BO4) Oxoborate
AU - Biryukov, Ya. P.
AU - Bubnova, R. S.
AU - Filatov, S. K.
AU - Goncharov, A. G.
PY - 2016
Y1 - 2016
N2 - Iron oxoborate Fe3O2(BO4) has been first produced in solid-phase chemical reactions. Its thermal behavior in the temperature range 20–900°C is studied with the use in situ high-temperature powder X-ray diffraction. It is shown that Fe3O2(BO4) begins decomposing with the formation of Fe2O3 in the temperature range 660–900°C. Thermal expansion is sharply anisotropic at room temperature (αmax/αmin = 7) and becomes more isotropic with an increase in the temperature (αmax/αmin = 1.2). The degree of oxidation of Fe3+ has been confirmed by Mössbauer spectroscopy (at a room temperature), and two nonequivalent positions in the structure have been detected, which are occupied by iron atoms with the octahedral environment of the oxygen atoms.
AB - Iron oxoborate Fe3O2(BO4) has been first produced in solid-phase chemical reactions. Its thermal behavior in the temperature range 20–900°C is studied with the use in situ high-temperature powder X-ray diffraction. It is shown that Fe3O2(BO4) begins decomposing with the formation of Fe2O3 in the temperature range 660–900°C. Thermal expansion is sharply anisotropic at room temperature (αmax/αmin = 7) and becomes more isotropic with an increase in the temperature (αmax/αmin = 1.2). The degree of oxidation of Fe3+ has been confirmed by Mössbauer spectroscopy (at a room temperature), and two nonequivalent positions in the structure have been detected, which are occupied by iron atoms with the octahedral environment of the oxygen atoms.
M3 - Article
VL - 42
SP - 202
EP - 206
JO - Glass Physics and Chemistry
JF - Glass Physics and Chemistry
SN - 1087-6596
IS - 2
ER -
ID: 7566201