Search Results - "PASCHOAL, C. W. A"

Dynamics of magnetic inhomogeneity in La2CoMnO6 films probed by Raman spectroscopy by Silva, A.V.S., Silva, R.X., W. A. Paschoal, C., Paschoal, A.R., Nonato, A.

“…[Display omitted] •High-quality LCMO polycrystalline films were obtained via chemical solution deposition, annealed at different temperatures (700, 800, and…”
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Tolerance factor for pyrochlores and related structures by Mouta, R., Silva, R. X., Paschoal, C. W. A.

“…In this work a new empirical tolerance factor for compounds with pyrochlore structure is proposed. This suggested tolerance factor is based on experimental…”
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Temperature-dependent Raman scattering studies of Na2MoO4 by Saraiva, G. D., Paraguassu, W., Maczka, M., Freire, P. T. C., Lima Jr, J. A., Paschoal, C. W. A., Mendes Filho, J., Souza Filho, A. G.

“…The mode assignment of the cubic phase of anhydrous Na2MoO4 was carried out on the basis of lattice dynamic calculation using the classical rigid‐ion model…”
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Lattice dynamics and low-temperature Raman spectroscopy studies of PMN-PT relaxors by Lima, J. A., Paraguassu, W., Freire, P. T. C., Souza Filho, A. G., Paschoal, C. W. A., Filho, J. Mendes, Zanin, A. L., Lente, M. H., Garcia, D., Eiras, J. A.

“…In this work we present a Raman scattering study of a specific region of the morphotropic phase boundary (MPB) of the [Pb(Mg1/3Nb2/3)O3]1−x (PbTiO3)x relaxor…”
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Raman evidence for presence of high-temperature ferromagnetic clusters in magnetodielectric compound Ba-doped La2NiMnO6 by Barbosa, D.A.B., Paschoal, C.W.A.

“…Magnetodielectric ferromagnetic semiconductors are key materials because of their applications in spintronic devices; they can be used to control the magnetic…”
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Order-disorder phase transition and molecular dynamics in the hybrid perovskite [(CH3)3NH][Mn(N3)3] by Silva, R.X., Hora, R.R., Nonato, A., García-Fernández, Alberto, Salgado-Beceiro, Jorge, Señarís-Rodríguez, María Antonia, Andújar, Manuel Sánchez, Ayala, A.P., Paschoal, C.W.A.

“…[Display omitted] •Hybrid organic–inorganic perovskite compound [(CH3)3NH][Mn(N3)3] was obtained by the solution-diffusion method.•Clausius-Clapeyron indirect…”
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About the mechanism of the reconstructive structural phase transition underwent by tysonite LaF3 under pressure by DINIZ, E. M, PASCHOAL, C. W. A

“…In this work we discuss the reconstructive structural phase transition that LaF3 single crystals undergo under hydrostatic pressure based upon the fluorine and…”
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Spin-phonon coupling in melanothallite Cu2OCl2 by Araújo, B. S., Arévalo-López, A. M., Attfield, J. P., Paschoal, C. W. A., Ayala, A. P.

“…Since interesting magnetodielectric properties were discovered in terbium-based manganites, the search for new magnetodielectric multiferroic materials with…”
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Spin-phonon and magnetostriction phenomena in CaMn7O12 helimagnet probed by Raman spectroscopy by Araujo, B S, Ayala, A P, Maciel, A P, Sanchez-Andujar, M, Senaris-Rodriguez, M A, Paschoal C W A

“…In this letter, we investigated the temperature-dependent Raman spectra of CaMn7O12 helimagnet from room temperature down to 10 K. The temperature dependence…”
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The effect of cobalt substitution in crystal structure and vibrational modes of CuFe2O4 powders obtained by polymeric precursor method by Silva, M.D.P., Silva, F.C., Sinfrônio, F.S.M., Paschoal, A.R., Silva, E.N., Paschoal, C.W.A.

“…•We synthesized mixed spinels by polymeric precursor method.•We investigated the structural and vibrational properties of the mixed.•We investigated the…”
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Behavior of the elastic and mechanical properties of Ba2BiTaO6 compound under pressure changes by CARVALHO, E. F. V, DINIZ, E. M, PASCHOAL, C. W. A

“…In this work we have employed atomistic simulation to model some mechanical and elastic properties of the Ba2BiTaO6 compound under pressure changes. For this,…”
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Vibrational spectra of monazite-type rare-earth orthophosphates by Silva, E.N., Ayala, A.P., Guedes, I., Paschoal, C.W.A., Moreira, R.L., Loong, C.-K., Boatner, L.A.

“…The room-temperature vibrational spectra of the monazite-type rare-earth orthophosphates (RPO 4, R = La, Ce, Pr, Nd, Sm, Eu and Gd) have been investigated…”
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About the SDS inclusion in PDMS/TEOS ORMOSIL: a vibrational spectroscopy and confocal Raman scattering study by Paschoal, A. R., Ayala, A. P., Pinto, R. C. F., Paschoal, C. W. A., Tanaka, A. A., Boaventura Filho, J. S., José, N. M.

“…Organically modified silicates (ORMOSILs) are attractive materials due to their vast applicability and easy synthesis. The doping of these materials with…”
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Impedance spectroscopy investigation of the water-in-oil microemulsions formation by Barbosa, D.A.B., Paschoal, C.W.A., Louzeiro, H.C., Mendonça, K.K.M., Maciel, A.P., Silva, F.C., de Oliveira, H.P.

“…[Display omitted] ► The aim of this work was to investigate the microemulsion formation using the immitance spectroscopy (impedance and electrical modulus…”
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Collagen films from swim bladders: Preparation method and properties by Fernandes, R.M.T., Couto Neto, R.G., Paschoal, C.W.A., Rohling, J.H., Bezerra, C.W.B.

“…This paper describes the preparation and characterization of collagen films extracted from swim bladders of three species of tropical fishes: Arius parkeri…”
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Infrared Spectroscopic Investigations in Ordered Barium Magnesium Niobate Ceramics by Dias, Anderson, Paschoal, Carlos William A., Moreira, Roberto Luiz

“…Highly ordered Ba(Mg1/3Nb2/3)O3 ceramics from hydrothermal powders were investigated for the first time using infrared spectroscopy. The experimental data were…”
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Raman scattering study of RETiTaO6 dielectric ceramics by PASCHOAL, C. W. A, MOREIRA, R. L, FANTINI, C, PIMENTA, M. A, SURENDRAN, K. P, SEBASTIAN, M. T

“…In this work we have investigated microwave-dielectric ceramics RETiTaO6 (RE=Al, Y, In, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er or Yb) by Raman scattering…”
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Low-temperature Raman spectra of Sr0.66Ba0.34Nb2O6 single-crystal fibers by Faria, J. L. B., Freire, P. T. C., Ayala, A. P., Melo, F. E. A., Filho, J. Mendes, Paschoal, C. W. A., Santos, I. A., Eiras, J. A.

“…A possible structural change in Sr0.66Ba0.34Nb2O6 single‐crystal fibers when the temperature decreases from 295 to 10 K was investigated by dielectric constant…”
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Pressure-induced multiple structural phase transitions on multiferroic CaMn7O12 by Ferreira, W.C., Nonato, A., Mira, J., Sánchez-Andujar, M., Senãrís-Rodríguez, M.A., Yañez-Vilar, S., Ayala, A.P., Paschoal, C.W.A.

“…CaMn7O12 (CMO) is an outstanding multiferroic material known for its significant magnetically-induced electric polarization. Its strong magnetoelectric (ME)…”
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Polar phonons features and intrinsic dielectric properties of RE2CoMnO6 (RE = Tb, Dy, Ho, Tm and Yb) double perovskites by Barbosa, R.L., Almeida, R.M., Araújo, B.S., Paschoal, C.W.A., Señarís-Rodríguez, M.A., Sánchez Andújar, M., Nonato, A., Silva, R.X.

“…RE-based double perovskite (DP) oxides of the RE₂TMTM'O₆ family exhibit intriguing magnetodielectric (MD) properties and magnetocaloric effects (MCEs), making…”
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