Results 11 to 20 of about 24,751 (224)
Mechanochemical synthesis and magnetic properties of maghemite [PDF]
Vojnotehnički Glasnik, 2011 This work presents the results of an investigation on maghemite (γ -Fe2O3) nanoparticles magnetic properties, which show superparamagnetic behavior i.e. superparamagnetism. Nanoscale maghemite samples were obtained by the mechanochemical method.
Marin M. Tadić, Nada M. Čitaković
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Surface effects in maghemite nanoparticles [PDF]
Journal of Magnetism and Magnetic Materials, 2007 A consistent model is presented for the variation of saturation magnetization with particle size in maghemite nanoparticles, based on the existence of a magnetically disordered layer with a constant thickness of 1 nm. For particles smaller than 3 nm, layer thickness increases rapidly, and MS is already zero for 2.5 nm particle size.
Millan, A. +6 more
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On spin-canting in maghemite particles [PDF]
Journal of Applied Physics, 1994 The degree of alignment of the magnetic moments of Fe3+ ions in ultrafine maghemite particles has been studied in samples with induced magnetic texture. The textured samples were prepared by freezing ferrofluids, containing 7.5 nm maghemite particles, in a magnetic field.
Linderoth, Søren; id_orcid 0000-0001-9863-6290 +6 more
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New Phenotype and Mineralization of Biogenic Iron Oxide in Magnetotactic Bacteria
Nanomaterials, 2021 Many magnetotactic bacteria (MTB) biomineralize magnetite crystals that nucleate and grow inside intracellular membranous vesicles originating from invaginations of the cytoplasmic membrane.
Walid Baaziz +7 more
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Pharmaceutics, 2023 Superparamagnetic iron oxide nanoparticles (SPION) with a “non-fouling” surface represent a versatile group of biocompatible nanomaterials valuable for medical diagnostics, including oncology.
Hana Charvátová +4 more
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Nanomaterials, 2022 Iron oxides/oxyhydroxides, namely maghemite, iron oxide-silica composite, akaganeite, and ferrihydrite, are studied for AsV and AsIII removal from water in the pH range 2–8.
Marco Sanna Angotzi +7 more
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Consistent grain size distribution of pedogenic maghemite of surface soils and Miocene loessic soils on the Chinese Loess Plateau [PDF]
, 2010 There is agreement that ultrafine maghemite grains (\u3c100 nm) are responsible for the magnetic enhancement of Chinese loess. Recent studies show that grain size distribution of ultrafine pedogenic maghemite grains within the aeolian sequences on the ...
R. Egli +11 more
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MRI Relaxivity Changes of the Magnetic Nanoparticles Induced by Different Amino Acid Coatings
Nanomaterials, 2020 In this study, we analysed the physico-chemical properties of positively charged magnetic fluids consisting of magnetic nanoparticles (MNPs) functionalised by different amino acids (AAs): glycine (Gly), lysine (Lys) and tryptophan (Trp), and the ...
Iryna Antal +8 more
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Synthesis and Characterization of Maghemite as an Anode for Lithium-Ion Batteries
International Journal of Electrochemical Science, 2016 Thermal decomposition method were used to synthesize magnetite nanoparticles which then oxidized to maghemite. Simultaneous thermal analysis, X-ray diffraction, and Fourier transform infrared spectroscopy disclosed the formation of iron-urea complex and ...
M. Golmohammad +2 more
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Synthesis of Oxide Iron Nanoparticles Using Laser Ablation for Possible Hyperthermia Applications
Nanomaterials, 2020 In this work, iron oxide nanoparticles produced using the laser ablation technique were studied in order to determine the characteristics of these nanoparticles as a function of the laser energy for the possible application in magnetic hyperthermia ...
María J. Rivera-Chaverra +4 more
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