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中国地质大学科学技术发展院文广（博士生），李建威等资源学院 Geochimica et Cosmochimica Acta, 2017. Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications for magnetite classification schemes: Insights from theHandan-Xingtai iron district, North China
李建威
2021/10/21
近日，中国地质大学资源学院和地质过程与矿产资源国家重点实验室李建威教授团队在国际地球化学顶级期刊发表题为《Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications formagnetite classification schemes: Insights fr...
Facile method to synthesize oleic acid-capped magnetite nanoparticles
Magnetite nanoparticles Monodisperse Synthesis
2010/7/16
We described a simple one-step process for the synthesis of oleic acid-capped magnetite nanoparticles using the dimethyl sulfoxide (DMSO) to oxidize the precursor Fe2+ at 140 8C. By adjusting the alka...
Heat immunotherapy with heat shock protein expression by hyperthermia using magnetite nanoparticles
Heat shock proteins Hyperthermia Tumor immunity Magnetite
2009/7/15
Hyperthermia is a possible approach for cancer therapy. However, a major technical problem associated with the use of hyperthermia is the difficulty of heating the local tumor region to the intended t...
Electromagnetic emission from magnetite plate cracking under seismic processes
Electromagnetic emission magnetite plate seismic processes
2010/1/27
Electromagnetic emission generated by cracking of a magnetite plate is theoretically investigated. The non-stationary mechanical stresses, produced by moving the tip of a crack and a wave of mechanica...
Ellipsoidal carbon capsules encapsulated magnetite nanorods
Oval carbon capsules submicron Fe3O4 nanorods in-situ carbide sandwich polypyrrole elliptic sphere
2015/3/30
A novel ellipsoidal carbon capsules, with submicrometer sizeed Fe3O4 nanorods inside, were fabricated by in situ carbonization– reduction process from sandwich -Fe2O3@Air@ polypyrrole ellipsoidal sph...
Preparation of water-soluble magnetite nanocrystals through hydrothermal approach
Magnetite Superparamagnetism Water-soluble Hydrothermal
2015/3/31
Water-soluble Fe3O4 nanocrystals have been prepared through hydrothermal approach. These nanocrystals capped with C6H6O6 (the oxidation state of ascorbic acid) could be readily dispersed in hydrated a...
Magnetite lamellae in olivine and clinohumite from Dabie UHP ultramafic rocks, central China
Ultrahigh-pressure rocks olivine and clinohumite central China
2012/3/31
Ultrahigh-pressure (UHP) minerals of the Maowu mafic-ultramafic complex in the Dabieshan,
east-central China exhibit many exsolution textures. Magnetite lamellae are common in olivines and
Ti clinoh...
Formation of single-domain magnetite by a thermophilic bacterium
Formation single-domain magnetite bacterium
2012/4/1
Magnetite is a common product of bacterial iron reduction and may serve as a potential physical indicator of biological activity in geological settings. Here we report the formation of single-domain m...
Magnetite from magnetotactic bacteria: Size distributions and twinning
Magnetite magnetotactic bacteria Size distributions twinning
2012/4/1
We studied intracellular magnetite particles produced by several morphological types of magnetotactic bacteria including the spirillar (helical) freshwater species,Magnetospirillum magnetotacticum,and...
Equilibria among titanite, hedenbergite, fayalite, quartz, ilmenite, and magnetite: Experiments and internally consistent thermodynamic data for titanite
hedenbergite fayalite magnetite thermodynamic data titanite
2012/3/31
For iron-rich compositions, reactions among titanite, clinopyroxene, olivine, quartz,magnetite, and ilmenite can constrain the conditions under which common rocks form.Phase equilibrium experiments in...
Interaction between exsolution microstructures and magnetic properties of the magnetite-spinel solid solution
Interaction exsolution microstructures magnetic properties magnetite-spinel solid solution
2012/4/1
Magnetic properties of exsolved samples of the (Fe304t(MgAlz04),_x solid solution weremeasured over the temperature range 4-923 K and were correlated with microstructuresobserved by transmission elect...
Reinvestigation of the annite = sanidine + magnetite + H2 reaction using the 僅2-sensor technique
Reinvestigation annite = sanidine + magnetite + H2 僅2-sensor technique
2012/4/5
Thedecomposition ofthe iron mica,annite, to sanidine plus magnetiteand vapor,KFe3AlSi301O(OH)2=KAlSi30g+Fe304+Hz,hasbeenreexamined experimentally with
theuseofavarietyofbufferscoupledwithfH2 sensorsa...
Magnetic properties of the magnetite-spinel solid solution: Curie temperatures, magnetic susceptibilities, and cation ordering
Magnetic properties magnetite-spinel solid solution Curie temperatures magnetic susceptibilities cation ordering
2012/4/5
Curietemperatures (Td ofthe (Fe304)x(MgA1204)1-xsolid solution have been deter-minedfrom measurementsofmagneticsusceptibility (x)vs.temperature. Thetrend in Te
vs.composition extrapolates to 0Katx =0...
Influence of Nonstoichiometry and the Presence of Maghemite on the Mossbauer Spectrum of Magnetite
Magnetite Mossbauer effect Nonstoichiometric magnetite
2011/12/28
Several samples of large- and small-particle magnetite (Fe3O4), as well as its thermal decomposition products formed at different temperatures and atmospheres, have been studied extensively by Mö...
The Influence of Aluminum on Iron Oxides: XIV. Al-Substituted Magnetite Synthesized at Ambient Temperatures
Aluminum Goethite Iron oxide Magnetite Mossbauer spectroscopy X-ray powder diffraction
2012/1/4
Mixtures of magnetite and goethite were formed by the slow oxidation of mixed FeCl2-AlCl3 solutions in an alkaline environment at room temperature. The compositions of the products ranged from almost ...