Search Results - "Duque, J. G."

Magnetic properties of NiFe2O4 nanoparticles produced by a new chemical method by DUQUE, J. G. S, SOUZA, E. A, MENESES, C. T, KUBOTA, L

“…We have investigated the magnetic properties of nickel ferrite (NiFe2O4) nanoparticles obtained through a new chemical route. X-ray diffraction (XRD) confirms…”
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Nanocrystals of BaFe12O19 obtained by the proteic sol-gel process by FORTES, S. S, DUQUE, J. G. S, MACEDO, M. A

“…Nanocrystals of BaFe12O19, with a small amount of the BaFe2O4, were obtained by means of the proteic sol-gel process together. The results demonstrated that…”
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SrFe12O19 prepared by the proteic sol-gel process by BRITO, P. C. A, GOMES, R. F, DUQUE, J. G. S, MACEDO, M. A

“…Powders of strontium hexaferrite (SrFe12O19) were prepared by the proteic sol-gel process using coconut water as a precursor. X-ray diffraction (XRD)…”
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Size Effects on the Magnetic Properties of ZnFe2O4 Nanoparticles by Mendonça, E. C., Jesus, C. B. R., Folly, W. S. D., Meneses, C. T., Duque, J. G. S.

“…We report structural and magnetic measurements on ZnFe 2 O 4 nanoparticles obtained through coprecipitation chemical method. The Rietveld analysis of X-ray…”
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The effect of the thermal heating on the magnetic properties of a high permeability amorphous Fe76.5Cu1Nb3Si13.5B6 ribbon by Peixoto, E. B., Duque, J. G. S., Silva, L. S., Silva, R. A. G.

“…In this work, the effects of the thermal heating on an as-cast Fe-based amorphous ribbon treated in a conventional furnace are reported. We used…”
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Evidence of Verwey transition in iron- and iron oxide-encapsulated carbon nanotubes by de Araújo, A.E.P., Duque, J.G.S., Knobel, M., Schnitzler, M.C., Zarbin, A.J.G.

“…Magnetization measurements in two different samples of iron- and iron oxide-encapsulated carbon nanotubes are presented. The samples showed coercivity smaller…”
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Structurally tuned magnetic properties of TbmRhnIn3m+2n (m = 1,2; n = 0,1) intermetallic antiferromagnets by LORA-SERRANO, R, MENDONCA FERREIRA, L, GARCIA, D. J, MIRANDA, E, GILES, C, DUQUE, J. G. S, GRANADO, E, PAGLIUSO, P. G

“…We report the evolution of the magnetic properties of a new series of intermetallic compounds TbmRhnIn3m+2n (m=1,2;n=0,1) which are structurally related to a…”
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Electron spin resonance study of the local environment for the Gd3+ and Eu2+ ions in Ca1-xRxB6 (R = Gd,Eu) (0.0001≤x≤0.30) by DUQUE, J. G. S, URBANO, R. R, PAGLIUSO, P. G, RETTORI, C, SCHLOTTMANN, P, FISK, Z, OSEROFF, S. B

“…The environment of in is studied by electron spin resonance (ESR). For x0.001 the spectra show Lorentzian shape (insulating phase). As x increases, the spectra…”
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Magnetic properties of frustrated Y-doped GdInCu4 by DUQUE, J. G. S, MIRANDA, E, BELON, A. M. O, BUFAICAL, L, RETTORI, C, PAGLIUSO, P. G

“…We report temperature dependent magnetic susceptibility and electron spin resonance (ESR) measurements on single crystals of the frustrated antiferromagnet…”
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Radial distribution of internal stresses in as-quenched FeCoSiB amorphous wire analyzed through giant magnetoimpedance by Canola, D.B., Duque, J.G.S., Knobel, M.

“…The dependence of the giant magnetoimpedance effect on both the applied tensile stress and skin depth is employed to estimate the average of the frozen-in…”
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Structural, electronic and magnetic properties of the series of double perovskites (Ca,Sr)2−xLaxFeIrO6 by Bufaiçal, L., Adriano, C., Lora-Serrano, R., Duque, J.G.S., Mendonça-Ferreira, L., Rojas-Ayala, C., Baggio-Saitovitch, E., Bittar, E.M., Pagliuso, P.G.

“…Polycrystalline samples of the series of double perovskites Sr2−xLaxFeIrO6 were synthesized. Their structural, electronic and magnetic properties were…”
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Weak ferromagnetic component on the bulk ZnFe2O4 compound by Jesus, C.B.R., Mendonça, E.C., Silva, L.S., Folly, W.S.D., Meneses, C.T., Duque, J.G.S.

“…Magnetization data on the bulk ZnFe2O4 antiferromagnetic compound (TN≈10K) obtained via solid state reaction at different synthesis temperatures show one weak…”
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First order magnetic transition and magnetoelastic effects in Sm2IrIn8 by LORA-SERRANO, R, CORREA, V. F, LACERDA, A. H, SARRAO, J. L, ADRIANO, C, GILES, C, DUQUE, J. G. S, GRANADO, E, PAGLIUSO, P. G, MURPHY, T. P, PALM, E. C, TOZER, S. W

“…We report measurements of temperature dependent heat capacity, thermal expansion and high resolution X-ray diffraction (XRD) taken on single crystals of…”
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Synthesis and characterization of TM-doped CuO (TM = Fe, Ni) by Meneses, C.T., Duque, J.G.S., Vivas, L.G., Knobel, M.

“…Polycrystalline Cu 1− x TM x O samples ( x = 0 and 0.06; TM = Ni 2+ and Fe 3+) were grown using a co-precipitation method. The structural and magnetic…”
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Crystalline electrical field effects on powdered RE Cu4Al8 (RE = Tb, Dy, Ho and Er) intermetallic compounds by Mercena, S.G., Silva, L.S., Lora-Serrano, R., Garcia, D.J., Souza, J.C., Pagliuso, P.G., Duque, J.G.S.

“…In this work, structural and magnetic properties RE Cu4Al8 (RE = Tb, Dy, Ho and Er) family of compounds are reported. Measurements of X-ray diffraction,…”
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Magnetic Dilution Effects in the Intermetallic Compound GdIn3 by Silva, L. S., Peixoto, E. B., Mercena, S. G., Coelho, A. A., Meneses, C. T., Duque, J. G. S.

“…In this work, structural and magnetic data of Y x Gd 1−x In 3 (0 < x < 0.5) single crystals grown from an In flux are reported. X-ray diffraction measurements…”
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Synthesis and characterization of NiO and NiFe2O4 nanoparticles obtained by a sucrose-based route by SOUZA, E. A, DUQUE, J. G. S, KUBOTA, L, MENESES, C. T

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Effective anisotropy field variation of magnetite nanoparticles with size reduction by Vargas, J. M., Lima, E., Zysler, R. D., Duque, J. G. S., De Biasi, E., Knobel, M.

“…Size effect on the internal magnetic structure has been investigated on weakly interacting magnetite (Fe 3 O 4 ) nanoparticles by ferromagnetic resonance…”
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Influence of organic precursor on the structural and magnetic properties of Co3O4 nanoparticles by Lima, R.J.S., Moura, K.O., Pedra, P.P., Duque, J.G.S., Meneses, C.T.

“…Antiferromagnetic Co3O4 nanoparticles were synthesized by the coprecipitation method. With the addition of the sucrose as chelating agent (sucrose) the size of…”
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Field induced phase transitions on NdRhIn5 and Nd2RhIn8 antiferromagnetic compounds by Duque, J.G.S., Lora Serrano, R., Garcia, D.J., Bufaical, L., Ferreira, L.M., Pagliuso, P.G., Miranda, E.

“…In this work, we have investigated the low temperature magnetic phase diagram of the tetragonal NdRhIn5 and Nd2RhIn8 single crystals by means of temperature…”
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