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The influence of crystallite orientations on the chemical reactivity of hematite α‐Fe 2 O 3 and magnetite Fe 3 O 4
Author(s) -
Heizmann J. J.,
Becker P.,
Baro R.
Publication year - 1981
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889881009345
Subject(s) - hematite , magnetite , crystallite , crystallography , reactivity (psychology) , materials science , orientation (vector space) , reduction (mathematics) , chemistry , mineralogy , metallurgy , geometry , mathematics , medicine , alternative medicine , pathology
It is shown that the principal topotaxial relationship between hematite α‐Fe 2 O 3 and magnetite Fe 3 O 4 during cycles of reduction and oxidation can be considered as crystallographically reversible. The precision of the mutual orientation of the two lattices decreases as the number of cycles of reduction and oxidation increases and there is a correlation between crystallographic orientation and the rate of oxidation and of reduction.