Search Results - "MENESES, C. T"

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…”
Get full text

A simple method to obtain Fe-doped CeO2 nanocrystals at room temperature by Almeida, J.M.A., Santos, P.E.C., Cardoso, L.P., Meneses, C.T.

“…Ce1−xFexO2 nanocrystals (0<x<0.05) have been synthesized at room temperature using the coprecipitation method. The samples were characterized by X-ray powder…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Synthesis and Magnetic Properties of Mn-Doped and SnO2 Nanoparticles by Cunha, T. R., Costa, I. M., Lima, R. J. S., Duque, J. G. S., Meneses, C. T.

“…This paper reports the synthesis of Sn 1− x Mn x O 2 (for x =0, 0.01, 0.05 and 0.10) nanoparticles using the co-precipitation method. X-ray diffraction (XRD)…”
Get full text

In situ system for X-ray absorption spectroscopy experiments to investigate nanoparticle crystallization by Meneses, C T, Flores, W H, Sotero, A P, Tamura, E, Garcia, F, Sasaki, J M

“…A new furnace, based on a halogen lamp, and a sample cell have been designed and constructed for in situ X-ray absorption spectroscopy experiments in…”
Get more information

The effect of Fe-doping in magnetic properties of frustrated spinel CoAl2O4 by Silva, L.S., Santos, J.D.T., Jesus, C.B.R., Meneses, C.T., Duque, J.G.S.

“…In this work, we study the effect of Fe-doping in the magnetic properties of CoAl2O4, which presents a very high level of frustration. Samples are synthesized…”
Get full text

Non-magnetic ions doping effects in the magnetic properties of zircon-type GdCrO4 compound by Jesus, A.C.B., Jesus, J.R., Bittar, E.M., Duque, J.G.S., Meneses, C.T.

“…•Y- and V-doped GdCrO4 samples obtained by the co-precipitation method.•Effect of doping on the structural and magnetic properties in GdCrO4…”
Get full text

Study of exchange bias in single-phase Dy0.2Nd0.8CrO3 by Jesus, J.R., Garcia, F., Duque, J.G.S., Meneses, C.T.

“…We present a study of the magnetic properties of a single-phase Dy0.2Nd0.8CrO3 compound. Interestingly, a negative exchange bias (EB) effect is observed for a…”
Get full text

Physical properties of antiferromagnetic single crystal GdIn3 by Silva, L.S., Peixoto, E.B., Mercena, S.G., Coelho, A.A., Meneses, C.T., Duque, J.G.S.

“…A sample of GdIn3 was obtained via the metallic flux technique and its structural, magnetic, and thermodynamic properties were studied. X-ray diffraction (XRD)…”
Get full text

In-situ XANES and XRD studies of the phase transition of RCrO3+γ (R = Y, Pr, Nd, Gd and Dy; γ = 0 or 1) compounds by Fabian, F.A., Barbosa, C.C.S., Santos, J.G., Caraballo-Vivas, R.J., Garcia, F., Duque, J.G.S., Meneses, C.T.

“…In this paper, the growth kinetic of RCrO3+γ (R = Y, Pr, Nd, Gd and Dy; γ = 0 or 1) compounds obtained by co-precipitation method is investigated by in-situ…”
Get full text

Size-dependence of the exchange bias effect observed in Nd1-xDyxCrO3 (x = 0.05 and 0.20) compounds by Barbosa, C.C.S., Jesus, J.R., Santos, J.F.A., Jesus, A.C.B., Mendonça-Ferreira, L., Duque, J.G.S., Meneses, C.T.

“…•Observation of exchange bias in Nd1-xDyxCrO3 (x = 0.05 and 0.20) compounds.•The system exhibits an AFM transition T ≈ 210 K and spin reorientation at…”
Get full text

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…”
Get full text

Analysis of zero field and field cooled magnetization curves of CoFe2O4 nanoparticles with a T-dependence on the saturation magnetization by Peixoto, E.B., Carvalho, M.H., Meneses, C.T., Sarmento, V.H.V., Coelho, A.A., Zucolotto, B., Duque, J.G.S.

“…In this work, CoFe2O4 nanoparticles embedded inside an amorphous SiO2 were produced by the sol-gel method through the hydrolysis and condensation of tetraethyl…”
Get full text

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

Get full text

A simple route to the synthesis of high-quality NiO nanoparticles by Meneses, C.T., Flores, W.H., Garcia, F., Sasaki, J.M.

“…Dispersed nickel oxide nanoparticles were obtained by a simple and low-cost method using a mixture of gelatin as organic precursor and NiCl2 · 6H2O as Ni…”
Get full text

Synthesis and characterization of NiMn2O4 nanoparticles using gelatin as organic precursor by Almeida, J.M.A., Meneses, C.T., de Menezes, A.S., Jardim, R.F., Sasaki, J.M.

“…Nanoparticles of NiMn2O4 were successfully obtained by mixing gelatin and inorganic salts NiCl2*6H2O and MnCl2*4H2O in aqueous solution. The mixture has been…”
Get full text

Synthesis and X-ray structural characterization of NiO nanoparticles obtained through gelatin by Maia, A.O.G., Meneses, C.T., Menezes, A.S., Flores, W.H., Melo, D.M.A., Sasaki, J.M.

“…Nanoparticles of fcc-NiO phase were obtained by heating the dried resin resultant of a mixture of gelatin and NiCl2·6H2O in aqueous solution. The average…”
Get full text

In situ X-ray diffraction study on the growth kinetics of NiO nanoparticles by Meneses, C. T., Almeida, J. M. A., Sasaki, J. M.

“…The growth kinetics of NiO nanoparticles have been studied by in situ X‐ray diffraction using two detection systems (conventional and imaging plate). NiO…”
Get full text