maghemite造句

• Maghemite is a hematite-and magnetite-related oxide mineral.
• This process changes paramagnetic hematite into ferromagnetic maghemite / magnetite.
• Maghemite is also an ingredient of magnetic recording tape.
• Maghemite is formed by the topotactic oxidation of magnetite.
• Maghemite was named in 1927 for an occurrence at the Iron Mountain mine, northwest of isometric crystals.
• Being highly susceptibile to oxidation, magnetite ( ) is transformed to maghemite ( ? ) in the presence of oxygen:
• By choosing diblock copolymers with different block reactivities in order to selectively embed maghemite nanoparticles and generate periodic materials with potential use as waveguides.
• Gossans of nickel mineralisation, especially massive sulfides, are dominated in the arid Yilgarn Craton by boxworks of goethite, hematite, maghemite and ocher clays.
• Since the weakest magnet did not attract any soil, it was concluded that the airborne dust did not contain pure magnetite or just one type of maghemite.
• Maghemite nanoparticles are also used in biomedicine, because they are biocompatible and non-toxic to humans, while their magnetism allows remote manipulation with external fields.
• Ferrite nanoparticle clusters with narrow size distribution consisting of superparamagnetic oxide nanoparticles ( ~ 80 maghemite superparamagnetic nanoparticles per bead ) coated with a silica shell have several advantages over metallic nanoparticles:
• Although extremely small amounts of dust have adhered to the magnets so far, Knudsen said the early indication is that the particles contain significant amounts of the mineral maghemite, a weathering byproduct of iron.
• Recent advances show that MWNT decorated with maghemite nanoparticles can be oriented in a magnetic field and enhance the electrical properties of the composite material in the direction of the field for use in electric motor brushes.
• This kiln uses diesel as a reductant to generate carbon monoxide, which reacts with haematite and other iron oxides in the feed at approximately 700癈, to create magnetite or maghemite whilst leaving other minerals largely unaffected.
• Though a chemical analysis of the dust particles collected by magnets on Pathfinder remains to be done, early data indicates these particles may consist of maghemite, a strongly magnetic iron compound, cemented onto particles of clay.
• Images of many of the silica-rich rocks showed that they contained a strongly magnetic iron-oxide mineral called maghemite, which forms in water-rich environments on Earth and probably were formed the same way on Mars.
• A preliminary look at the magnetic dust, which collects on small magnets where it can be photographed by the lander's camera, shows that it may be a mineral called maghemite, the material used for the coating of hard disks in home computers.