Search Results - "de Medeiros, S.N."

Synthesis of stoichiometric Ca2Fe2O5 nanoparticles by high-energy ball milling and thermal annealing by Amorim, B.F., Morales, M.A., Bohn, F., Carriço, A.S., de Medeiros, S.N., Dantas, A.L.

“…We report the synthesis of Ca2Fe2O5 nanoparticles by high-energy ball milling and thermal annealing from α-Fe2O3 and CaCO3. Magnetization measurements,…”
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Tuning structural, magnetic, electrical, and dielectric properties of MgFe2O4 synthesized by sol-gel followed by heat treatment by Araújo, J.C.R., Araujo-Barbosa, S., Souza, A.L.R., Iglesias, C.A.M., Xavier, J., Souza, P.B., Plá Cid, C.C., Azevedo, S., da Silva, R.B., Correa, M.A., de Medeiros, S.N., Silva, E.F., Bohn, F.

“…We investigated magnesium ferrite MgFe2O4 nanoparticles synthesized by the sol-gel method followed by heat treatment at distinct temperatures. Specifically, we…”
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Comparison of the effects of chemical and mechanical pressure in CeCoGe3−xSix alloys by Rosch, Anja, de Medeiros, S.N., Fontes, M.B., Baggio-Saitovitch, E.M., Eichler, A.

“…The system CeCoGe3-xSix is of special interest since there is evidence that a quantum critical point of the antiferromagnetic phase can be approached by…”
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Synthesis of magnetite nanoparticles by high energy ball milling by de Carvalho, J.F., de Medeiros, S.N., Morales, M.A., Dantas, A.L., Carriço, A.S.

“…Facile synthesis of magnetite nanoparticles by milling of iron powder and water. [Display omitted] ► Fabrication of size controlled magnetite nanoparticles. ►…”
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Theoretical limit for the initial magnetic susceptibility in collective systems of noninteracting macrospins by Iglesias, C.A.M., de Araújo, J.C.R., Xavier, J., Silva, L.M., Nunes, M.S., de Araújo, J.H., de Medeiros, S.N., Plá Cid, C.C., Morales, M.A., Silva, E.F., Gamino, M., Correa, M.A., Bohn, F.

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CoFe2O4@BiFeO3 core/shell nanoparticles: Synthesis, characterization, and fingerprints of the spin disorder by Xavier, J., Silva, R.B. da, Araújo, J.C.R., Iglesias, C.A.M., Filho, E.D. Silva, Fonseca, J.L.C., Soares, J.M., Souza, P.B., Plá Cid, C.C., Gamino, M., Medeiros, S.N. de, Correa, M.A., Bohn, F.

“…•Feasible route to the production of core/shell nanostructure with pure phases.•Synthesis of CoFe2O4@BiFeO3 core/shell nanoparticles by…”
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Pluronic® coated sterically stabilized magnetite nanoparticles for hyperthermia applications by Rodrigues, E.C., Morales, M.A., de Medeiros, S.N., Suguihiro, N.M., Baggio-Saitovitch, E.M.

“…We report the synthesis of magnetite nanoparticles by ball milling of α-Fe in water and its functionalization with oleic acid and Pluronic® F127 for use in…”
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The effect of the morphology on the magnetic properties of barium synthesized by Pechini method by Galvão, S.B., Lima, A.C., de Medeiros, S.N., Soares, J.M., Paskocimas, C.A.

“…Rod, platelet and ellipsoidal nanostructures of BaFe12O19 have been synthesized by the Pechini method followed by heat treatment. The produced samples were…”
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Structural and magnetic properties of Fe2TiO5 nanopowders prepared by ball-milling and post annealing by França, D.T., Amorim, B.F., de Morais Araújo, A.M., Morales, M.A., Bohn, F., de Medeiros, S.N.

“…•Ball-milling and post annealing as route to produce Fe2TiO5 nanopowder.•Structural and magnetic properties of Fe2TiO5 nanopowder.•Longitudinal spin freezing…”
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Structural and magnetic properties of Fe–Ti–O solid solution prepared by ball-milling and post annealing by Araújo, J.C.R., Xavier, J., Iglesias, C.A.M., da Silva, M.Q., França, D.T., Araujo-Barbosa, S., da Silva, R.B., Heringer, M.A.V., Baggio-Saitovitch, E., Plá Cid, C.C., Gamino, M., Silva, E.F., Morales, M.A., de Medeiros, S.N., Correa, M.A., Bohn, F.

“…We investigate the structural and magnetic properties of a Fe–Ti–O system prepared by ball-milling and post annealing from γ-Fe2O3 and TiO2-anatase. From a…”
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Mechano-synthesis, structural and magnetic characterization, and heat release of α-Fe nanoparticles embedded in a wüstite matrix by Batista, S.O.S., Morales, M.A., Santos, W.C. dos, Iglesias, C.A., Baggio-Saitovitch, E., Carriço, A.S., Bohn, F., de Medeiros, S.N.

“…We report a study of the structural and magnetic properties, as well as of the heat release, of an iron/wüstite composite, prepared from iron powder and water…”
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The effect of the morphology on the magnetic properties of barium hexaferrite synthesized by Pechini method by Galvão, S.B., Lima, A.C., de Medeiros, S.N., Soares, J.M., Paskocimas, C.A.

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Structural, microstructural and magnetic investigations in high-energy ball milled BiFeO3 and Bi0.95Eu0.05FeO3 powders by Freitas, V.F., Grande, H.L.C., de Medeiros, S.N., Santos, I.A., Cótica, L.F., Coelho, A.A.

“…In this paper, synthesis, structural, microstructural and magnetic properties of high-energy ball milled BiFeO3 and Bi0.95Eu0.05FeO3 powders were thoroughly…”
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Structural and magnetic studies on barium hexaferrites prepared by mechanical alloying and conventional route by Sharma, P., Rocha, R.A., de Medeiros, S.N., Paesano, A.

“…In the present study, barium hexaferrite powders were prepared by ordinarily mixing and by high energy ball-milling stoichiometric amounts of the BaCO 3 and Fe…”
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Changes in extreme events over Asia for present and future climate conditions based on a modelling analysis of atmospheric circulation anomalies by Sokhi, Ranjeet S., Tiwari, P. R., de Medeiros, Joanna S. N., Folberth, Gerd A., Collins, William J.

“…Synoptic weather and larger scale circulation patterns are closely coupled and have a major influence on regional weather and extreme events. This study…”
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Structural and Mossbauer characterization of the ball milled Fe(x)(Cr(2)O(3))(1(-(x) system by Biondo, V, de Medeiros, S.N., Paesano, A, Ghivelder, L, Hallouche, B, da Cunha, J.B.M.

“…The Fe(x)(Cr(2)O(3))(1(-(x) system, with 0.10?X?0.80, was mechanically processed for 24h in a high-energy ball-mill. In order to examine the possible formation…”
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Structural, microstructural and magnetic investigations in high-energy ball milled BiFeO 3 and Bi 0.95Eu 0.05FeO 3 powders by Freitas, V.F., Grande, H.L.C., de Medeiros, S.N., Santos, I.A., Cótica, L.F., Coelho, A.A.

“…In this paper, synthesis, structural, microstructural and magnetic properties of high-energy ball milled BiFeO 3 and Bi 0.95Eu 0.05FeO 3 powders were…”
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Structural, microstructural and Mössbauer spectral study of the BiFe1−xMnxO3 mechanosynthesized system by Santos, I.A., Grande, H.L.C., Freitas, V.F., de Medeiros, S.N., Paesano, A., Cótica, L.F., Radovanovic, E.

“…Multiferroic BiFe1−xMnxO3 ceramic powders were submitted to high-energy ball-milling. The structural, microstructural and Mössbauer spectral properties of the…”
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Mössbauer study and structural characterization of UO 2–Gd 2O 3 sintered compounds by Pagano, L., Valença, G.P., Silva, S.L., Cláudio, A.E.L., Ivashita, F.F., Barco, R., de Medeiros, S.N., Paesano, A.

“…Samples of UO 2 and up to 10 wt% of Gd 2O 3 were prepared by solid-state reaction under a reducing atmosphere, in a thermal path comprising ramps and dwell…”
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Manganese ferrite synthesized from Mn(II) acetate + hematite freeze-dried powders by Bellini, J.V., de Medeiros, S.N., Ponzoni, A.L.L., Longen, F.R., de Melo, M.A.C., Paesano, A.

“…Freeze-drying was used to obtain a homogeneous fine powder containing (CH 3COO) 2Mn·2H 2O and α-Fe 2O 3 (molar ratio Fe:Mn = 3:1), which was thermally treated…”
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