Претраживање
Приказ резултата 1-10 од 17
Synthesis of Y2SiO5 : Eu3+ nanoparticles from a hydrothermally prepared silica sol
(Journal of Alloys and Compounds, 2008)
In this paper, a novel route for the synthesis of Y2SiO5 (YSO) nanoparticles doped with Eu3+ ions. based on the use of a hydrothermally prepared silica sol as a chemical precursor and nanostructurign template, is presented. ...
Comparative reflection and structural analyses of copper and zinc coatings electrodeposited from acid sulfate solutions with and without additives
(Surface and Coatings Technology, 2002)
Reflection and structural analyses of different copper and zinc coatings were performed. The coatings of copper obtained were from acid sulfate solutions in the absence and presence of thiourea. The coatings of zinc were ...
Magnetic properties of trivalent Sm ions in SmxY2-xO3
(Journal of Alloys and Compounds, 2009)
Polycrystailline samples of the cubic SmxY2-xO3 solid solutions (x = 0 2, 0.5. 1 0, 1 4, 1.7 and 2.0) were prepared and analyzed by the XRD and magnetic susceptibility measurements. Random distribution of Sm3+ ions between ...
Preparation of Nanosized Non-Oxide Powders Using Diatomaceous Earth
(Science of Sintering, 2009)
In this paper the nanosized non-oxide powders were prepared by carbothermal reduction and subsequent nitridation of diatomaceous earth which is a waste product from coal exploitation. Our scope was to investigate the ...
Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite
(Journal of Alloys and Compounds, 2009)
In this work we report results on the influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite. A series of Fe(2.85)RE(0.15)O(4) (RE = Gd, Dy, Ho, Tm and Yb) samples have ...
Influence of MgO addition on the synthesis and electrical properties of sintered zinc-titanate ceramics
(Journal of Alloys and Compounds, 2009)
Starting mixtures of ZnO, TiO(2) and MgO (0, 1.25 and 2.5 wt.% MgO) powders were mechanically activated for 15 min in a planetary ball mill. The powders obtained were sintered non-isothermally to temperatures between 800 ...
Luminescence and structural properties of Gd2SiO5 : Eu3+ nanophosphors synthesized from the hydrothermal obtained silica sol
(Journal of Alloys and Compounds, 2006)
In this paper is given a synthesis of Gd2SiO5 (GSO) host lattice doped with Eu3+ ions using silica sol obtained by hydrothermal method as a main precursor for its nanostructure designing. X-ray diffraction, dynamic light ...
Fabrication of SiC by carbothermal-reduction reactions of mountain leather asbestos
(Journal of Alloys and Compounds, 2008)
Fibrous magnesium silicate (Mg6Si4O10(OH)s: Mountain leather asbestos) of Serbian origin was used as Si precursor for the Synthesis of SiC by carbothermal-reduction process. As a reducing agent, carbon (from various ...
Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis
(Materials Research Bulletin, 2007)
Quaternary spinel oxide LiMn1.825Cr0.175O4 Powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder ...
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 ...