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Optical and structural properties of Zn2SiO4 : Mn2+ green phosphor nanoparticles obtained by a polymer-assisted sol-gel method
(Scripta Materialia, 2008)
A novel procedure for Zn2SiO4:Mn2+ phosphor powder synthesis based on a combination of sol-gel and combustion methods is presented. The procedure utilizes Zn-nitrate, Mn-nitrate, tetraethylorthosilicate and polyethylene ...
High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction
(Scripta Materialia, 2007)
Nanoscale maghemite samples were obtained by a solid-state displacement reaction activated by mechanochemical treatment for two different milling times, 30 min (sample S1) and 4 h (sample S2). Samples were characterized ...
The dependence of cation distribution, microstrain and magnetic susceptibility on particle size in nanocrystalline Gd2O3/Y2O3
(Scripta Materialia, 2007)
A novel synthesis route based on thermal decomposition of yttrium and gadolinium complexes with 2,4-pentanedione ligand has been used to synthesize 5 nn size (Y0.9Gd0.1)(2)O-3 powder. Refinement of occupancy parameters ...
Low energy pure shear milling: A method for the preparation of graphite nano-sheets
(Scripta Materialia, 2006)
Graphite nano-sheets, having a thickness of the order of 10 nm, high shape asymmetry, and a well preserved crystalline order, have been prepared by a mechanical method based on the grinding of graphite powder under low ...
Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment
(Scripta Materialia, 2008)
Nanoparticle La0.7Ca0.3MnO3 was synthesized for the first time by the glycine-nitrate method without additional heat treatment. The average crystallite size of similar to 10 nm obtained by both transmission electron ...
Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite
(Scripta Materialia, 2008)
Starting from a nanocomposite consisting of 4 nm hematite nanoparticles embedded in a silica matrix (30 wt.% hematite) and by applying heat treatments at increasing temperatures up to 1050 degrees C, gradual formation of ...
Temperature dependence of the electrical conductivity of epoxy/expanded graphite nanosheet composites
(Scripta Materialia, 2008)
The electrical conductivity of composites obtained by mixing epoxy resin and expanded graphite (EG) nanosheets has been investigated. Conductivity changes of up to I I orders of magnitude were observed as the filler load ...