Maghemite (Fe 2 O 3, γ-Fe 2 O 3) is a member of the family of iron oxides. It has the same formula as hematite, but the same spinel ferrite structure as magnetite (Fe3O4) and is also ferrimagnetic. It is sometimes spelled as "maghaemite".

Maghemite, an iron oxide mineral. It has a composition close to ferric oxide (Fe2O3) and exhibits strong magnetism and remanence. Its structure is isometric, of defective spinel form, and somewhat iron-deficient.

Maghemite (γFe 2 O 3) is the ultimate low-temperature oxidation or weathering product of magnetite. It has an inverse spinel structure similar to magnetite but has a defective lattice with one ninth of the Fe positions in the lattice being vacant with cell dimension a = 8.337Å.

Maghemite is a mineral with formula of (Fe 3+ 0.67 â » 0.33)Fe 3+ 2 O 4. The corresponding IMA (International Mineralogical Association) number is IMA2018 s.p.. The IMA symbol is Mgh.

Maghemite is formed by weathering or low-temperature oxidation of spinels containing ferrous iron, commonly magnetite or titanian magnetite. It is a widespread yellow pigment in continental sediments, rocks, and soils.

2017年3月15日 · Among iron oxides, maghemite is one of the most important magnetic ceramics. Maghemite is widely sued in magnetic recording and biomedicine. This paper attempts to give an overview on the some important areas. They contain synthetic methods, magnetic study, structural study and applications.

Occurrence: Formed by weathering or low-temperature oxidation of spinels containing ferrous iron, commonly magnetite or titanian magnetite. A widespread yellow pigment in continental sediments, rocks, and soils. Magnetite, ilmenite, anatase, …

Maghemite (γ-Fe2 O 3) is another iron oxide that has a dual advantage when used in water treatment applications. It acts as both a photocatalyst and magnetic nanomaterial which makes it very effective in the degradation and removal of contaminants.

Maghemite occurs due to weathering, or low-temperature oxidation of spinels containing ferrous iron, common magnetite, or titanian magnetite. It is also found in the widespread yellow pigment in continental sediments, rocks, and soils.

It is usually considered that the story of magnetism begins with a mineral called magnetite (Fe 3 O 4), the first magnetic material known to man. However, the oxidation of magnetite, which occurs at very low temperatures ( > 50 °C), results in maghemite (γ-Fe 2 O 3).