Results 191 to 200 of about 35,382 (205)

Synthesis and characterization of maghemite nanosheets

Materials Letters, 2011
Abstract Magnetic maghemite nanoparticles in the form of nanosheets were prepared by a topotactic transformation during the dehydroxylation of a γ-FeO(OH) precursor. The precursor was synthesized from tetrapyridin Fe(II) chloride (Fe(py) 4 Cl 2 ). The nanosheets are several hundreds of nanometers wide, and less than 5 nm thick; they frequently bend ...
Miha Drofenik, Gregor Ferk, Matjaž Kristl, Darko Makovec   +3 more
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Energy barrier distributions of maghemite nanoparticles

Nanotechnology, 2007
A recently introduced method for the characterization of magnetic nanoparticles (MNPs) based on the analysis of the temperature-dependent Neel relaxation signal (TMRX) has been applied to characterize maghemite particles with different particle size distributions.
E Romanus, T Koettig, G Glöckl, S Prass, F Schmidl, J Heinrich, M Gopinadhan, D V Berkov, C A Helm, W Weitschies, P Weber, P Seidel   +11 more
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Interfacial and Rheological Characteristics of Maghemite Aqueous Suspensions

Journal of Colloid and Interface Science, 1998
The interfacial properties and rheological behavior of the maghemite/water system have been investigated in this work. It has been determined that the real pzc and iep values of maghemite immersed in aqueous solution, containing KNO3 as electrolyte, are very close to 6.6.
, Garcell, , Morales, , Andres-Vergés, , Tartaj, , Serna   +4 more
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Electrodeposition of maghemite (γ-Fe2O3) nanoparticles

Chemical Engineering Journal, 2008
Crystalline maghemite (-Fe2O3) nanoparticles were cathodically electrodeposited at room temperature from environmentally benign electrolytes. The shape, size, and production rate of nanoparticles were strongly influenced by electrochemical conditions (e.g. FeCl3 concentration, current density).
Hosik Park, Perla Ayala, Marc A. Deshusses, Ashok Mulchandani, Heechul Choi, Nosang V. Myung   +5 more
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Synthesis of very fine maghemite particles

Journal of Magnetism and Magnetic Materials, 1995
Abstract The effect of citrate ions on the growth of magnetite particles is investigated. ‘Ultrafine’ particles have been obtained (diameter of the order of 20 A) that were converted to maghemite. The characterisation of the maghemite particles by various techniques (X-ray diffraction, transmission electron microscopy, magnetic measurements) is ...
Bee, Agnes, Massart, Rene, Neveu, Sophie
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Maghemite in soils and its origin

Clay Minerals, 1974
AbstractThe products of air oxidation of mixed Fe(II)-Fe(III) chloride solutions at pH 6 and 7, at 20 and 60°C and at normal pressure contain green rust, maghemite, lepidocrocite, goethite and a paracrystalline ferric hydroxide (ferrihydrite). Among these maghemite, a cubic ferromagnetic iron oxide (Fe2O3) found in many soils, is favoured by slow ...
R. M. Taylor, U. Schwertmann
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Silica-Maghemite Nanocomposites

Advanced Materials, 2001
A. Bourlinos, A. Simopoulos, D. Petridis, H. Okumura, G. Hadjipanayis   +4 more
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Maghemite (mgh)

2023
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maghemite, n.

2023
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Isolation of Arginine Using Maghemite Particles

2019
In this paper, we report the optimal conditions for the isolation of amino acid arginine from different types of matrix, such as blood, plasma or tissue and their characterization using ion-exchange liquid chromatography with VIS detector. Paramagnetic microparticles able to isolate and immobilize amino acid arginine were prepared and used to ...
Cernei, Natalia Vladimirovna, Kopel, Pavel, Horký, Pavel, Zítka, Ondřej, Adam, Vojtěch   +4 more
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