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Maghemite (Fe2O3, γ-Fe2O3) is a
member of the
family of iron oxides. It has the same
formula as hematite, but the same
spinel ferrite structure as magnetite...
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nanoparticles or iron
oxide nanoparticles (iron
oxides in
crystal structure of
maghemite or magnetite) are the most
explored magnetic nanoparticles up to date...
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alpha phase at high temperatures. It
occurs naturally as the
mineral maghemite. It is
ferromagnetic and
finds application in
recording tapes, although...
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Hematite is not only
harder than pure iron, but also much more brittle.
Maghemite is a
polymorph of
hematite (γ-Fe 2O 3) with the same
chemical formula...
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produce brown pigment quality γ-Fe2O3 (
maghemite): 2 Fe 3 O 4 ⏟
magnetite + 1 2 O 2 ⟶ 3 ( γ − Fe 2 O 3 ) ⏟
maghemite {\displaystyle {\ce {\underbrace{2Fe3O4}_{magnetite}+...
- two main
forms are
composed of
magnetite (Fe3O4) and its
oxidized form
maghemite (γ-Fe2O3). They have
attracted extensive interest due to
their superparamagnetic...
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goethite and
ferrihydrite convert to
maghemite on
exposure to heat.
Temperatures sufficient to
elevate maghemite on a
landscape scale indicate the influence...
- ⇒ γ-Li 2ZnSiO 4 An
alternate example is the
oxidation of
magnetite to
maghemite. IUPAC,
Compendium of
Chemical Terminology, 2nd ed. (the "Gold Book")...
- α-Fe2O3:
alpha phase,
hematite β-Fe2O3: beta
phase γ-Fe2O3:
gamma phase,
maghemite ε-Fe2O3:
epsilon phase goethite (α-FeOOH), akaganéite (β-FeOOH), lepidocrocite...
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lodestones has
found them to be made of
magnetite (Fe3O4) with
inclusions of
maghemite (cubic Fe2O3),
often with
impurity metal ions of titanium, aluminium,...
