The Synthesis and Magnetic Properties of Nanosized Hematite (α-Fe2O3) Particles
نویسندگان
چکیده
منابع مشابه
synthesis of amido alkylnaphthols using nano-magnetic particles and surfactants
we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.
15 صفحه اولMagnetic properties of nano-scale hematite, α-Fe2O3, studied by time-of-flight inelastic neutron spectroscopy.
Samples of nanoscale hematite, α-Fe2O3, with different surface geometries and properties have been studied with inelastic time-of-flight neutron scattering. The 15 nm diameter nanoparticles previously shown to have two collective magnetic excitation modes in separate triple-axis neutron scattering studies have been studied in further detail using the advantage of a large detector area, high res...
متن کاملSonochemical synthesis of nanosized hollow hematite.
Hollow inorganic materials are of great interest, in part because of their diverse applications for drug delivery, catalysis, photonic crystals, etc.1 Various preparation methods have been developed to fabricate hollow inorganic materials2,3 and even hollow single crystals;4 most commonly these synthetic methods exploit the use of silica nanospheres as a sacrificial template material. While sil...
متن کاملSize-dependence of the heat capacity and thermodynamic properties of hematite (α-Fe2O3)
0021-9614/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.jct.2010.04.009 * Corresponding author. Tel.: +1 801 422 2093; fax E-mail addresses: [email protected], Bri (B.F. Woodfield). The heat capacity of a 13 nm hematite (a-Fe2O3) sample was measured from T = (1.5 to 350) K using a combination of semi-adiabatic and adiabatic calorimetry. The heat capacity was higher than that of th...
متن کاملMagnetic properties of silica coated spindle-type hematite particles.
Magnetic properties of particles are generally determined from randomly oriented ensembles and the influence of the particle orientation on the magnetic response is neglected. Here, we report on the magnetic characterization of anisotropic spindle-type hematite particles. The easy axis of magnetization is within the basal plane of hematite, which is oriented perpendicular to the spindle axis. T...
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ژورنال
عنوان ژورنال: Journal of Colloid and Interface Science
سال: 2002
ISSN: 0021-9797
DOI: 10.1006/jcis.2001.8194