Source: http://www.gmf.ufscar.br/?lang=en
Timestamp: 2019-04-18 22:50:10+00:00

Document:
The GMF – Group of Ferroic Materials, located at the Physics Department of the Federal University of São Carlos, since 80´s, works on the fundamentals and applications of ferroic materials helped by the efforts of its research team (undergraduate and graduate students, pos-docs, visiting scholars and faculty academic&staff). Many of the GMF research and extension projects are developed in partnership with groups from Brazilian and/or foreigner institutions. The group has achieved expertise on the material development and applications based on ferroelectrics, piezoelectrics, electrooptics and multiferroics. Also, the GMF lab facilities allow fully electroceramics property characterization and the variety of equipment and experimental setups enable the analysis of the structural, electric, dielectric, piezoelectric, ferroelectric, elastic, magnetoeletric and electrooptical properties of the materials.
Financial Resources and Fellowships: the GMF research and extension projects are usually supported by Brazilian research funding agencies (FAPESP, CNPq, CAPES, FINEP,…) or by other international agencies (CYTED, OPAS, CONICET, CONACYT,…). For undergrad and grad student training or pos-doc fellowships there are a variety of opportunities through calls for application from the Department of Physics Graduate Program or from national funding agencies (CAPES, CNPq or FAPESP).
Piezoelectric coefficients and coupling factors.
Applications for the Graduate Program of the Physics Department, please, access < http://www.ppgfis.df.ufscar.br/ >.
MASTELARO, V.R. ; FAVARIM, H.R. ; Mesquita, A. ; MICHALOWICZ, A. ; MOSCOVICI, J. ; Eiras, J.A. . Local structure and hybridization states in Ba0.9Ca0.1Ti1−xZrxO3 ceramic compounds: Correlation with a normal or relaxor ferroelectric character. Acta Materialia (Oxford), v. 84, p. 164-171, 2015.
PLACERES-JIMÉNEZ, R ; RINO, J P ; Eiras, J A . Modeling ferroelectric permittivity dependence on electric field and estimation of the intrinsic and extrinsic contributions. Journal of Physics. D, Applied Physics (Print), v. 48, p. 035304, 2015.
ESTRADA, F. R. ; MASCARENHAS, Y. P. ; Eiras, J. A. ; GARCIA, D. . Thermal Induced Structural and Dielectric Anomalies in Calcium Modified Lead Titanate Ceramics. Ferroelectrics (Print), v. 463, p. 25-30, 2014.
SARASÚA, L. G. ; MORENO, A. ; FAVRE, S. ; Eiras, J. A. . Investigation of a relationship between dielectric peak diffuseness and elastic modulus variations in a ferroelectric relaxor. Journal of Applied Physics, v. 115, p. 114110, 2014.
THOMAZINI, D; GELFUSO, MV ; VOLPI, GMS ; Eiras, JA . Conventional and Microwave-Assisted Sintering of CaCu 3 Ti 4 O 12 Ceramics Obtained from Coprecipitated Powders. International Journal of Applied Ceramic Technology, v. 12, p. n/a-n/a, 2014.
FRAYGOLA, B. ; Eiras, J.A. . Intrinsic magnetoelectric coupling in PFW-PT solid solutions. Solid State Communications, v. 158, p. 54, 2013.
VIANA, D.S.F. ; GARCIA, D. ; Eiras, J A. ; OLZON-DIONYSIO, M. ; SOUZA, S.D. ; MONTANHER, D.Z. ; Cótica, L.F. ; SANTOS, I.A. ; Coelho, A.A. ; GOTARDO, R.A.M. . Magnetic states and valence fluctuations in charge frustrated polycrystalline lutetium ferrite samples. Scripta Materialia, v. 69, p. 670-673, 2013.
JIMENEZ, RP; RINO, JP ; GONCALVES, AM ; EIRAS, JA . Nonlinear dielectric response and transient current: An effective potential for ferroelectric domain wall displacement. Applied Physics Letters, v. 103, p. 112901, 2013.
LONDONO, F. A. ; Eiras, J. A. ; GARCIA, D. . Optical and electro-optical characteristics of hot-pressing (Pb1-xLax)TiO3 ferroelectric ceramics. Boletín de la Sociedad Española de Cerámica y Vidrio, v. 51, p. 353-358, 2012.
Venet, M ; Zabotto, FL ; Eiras, JA; Garcia, D. High and tunable piezoelectric coefficients in 0.675Pb(Mg Nb )O3 0.325PbTiO3 ceramics. Materials Research Bulletin, v. 47, p. 2219-2221, 2012.
COTICA, L. F. ; ESTRADA, F. R. ; FREITAS, V. F. ; DIAS, G. S. ; SANTOS, I. A. ; Eiras, J. A. ; GARCIA, D. . Ferroic states in La doped BiFeO3-PbTiO3 multiferroic compounds. Journal of Applied Physics, v. 111, p. 114105, 2012.
THOMAZINI, D ; GELFUSO, MV ; Eiras, JA . Microwave assisted hydrothermal synthesis of Bi4Ti3O12 nanopowders from oxide as raw materials. Powder Technology (Print), v. 222, p. 139-142, 2012.
ZABOTTO, F. L. ; GUALDI, A. J. ; DE OLIVEIRA, A. J. A. ; Eiras, J. A. ; GARCIA, D. . Effect of Ferrite Concentration on Dielectric and Magnetoelectric Properties in (1-x)Pb(Mg 1/3 Nb 2/3 ) 0.68 Ti 0.32 O 3 +(x) CoFe 2 O 4 Particulate Composites. Ferroelectrics (Print), v. 428, p. 122-128, 2012.
FRAYGOLA, B. ; FRIZON, N. ; LENTE, M.H. ; Coelho, A.A. ; GARCIA, D. ; Eiras, J.A. . Phase transitions and magnetoelectroelastic instabilities in Pb(Fe1/2Nb1/2)O3 multiferroic ceramics. Acta Materialia (Oxford), v. 61, p. 1518-1524, 2012.
FRAYGOLA, B. ; Coelho, A.A. ; GARCIA, D. ; Eiras, J.A. . Magnetic ordering and instability investigation of multiferroic Pb(Fe2/3W1/3)O3 ceramics by microwave dielectric spectroscopy. Solid State Communications, v. 151, p. 1810-1813, 2011.
AULET, A. ; Nunez, I. ; MORENO, E. ; Eiras, J. A. ; NEGREIRA, C. A. . Design and acoustic characterization of limited diffraction ultrasonic devices. The Journal of the Acoustical Society of America, v. 127, p. 2737, 2010.
VENET, M. ; ZABOTTO, F. L. ; Eiras, J. A. ; GARCIA, D. . Improvement of the phase diagram for the pseudobinary PbNb[sub 2]O[sub 6] BaNb[sub 2]O[sub 6] system. Journal of Applied Physics, v. 105, p. 124106, 2009.
Gotardo, R A.M. ; Santos, I A. ; Cótica, L F. ; Botero, É R. ; Garcia, D ; Eiras, J. A. . Improved ferroelectric and magnetic properties of monoclinic structured 0.8BiFeO3 0.2BaTiO3 magnetoelectric ceramics. Scripta Materialia (Oxford), v. 61, p. 508-511, 2009.
ANDREETA, E. R. M. ; SANTOS, H. F. L. ; ANDREETA, M. ; LENTE, M. H. ; GARCIA, D ; HERNANDES, A. C. ; EIRAS, JA. Anisotropy on SrTiO3 Templated Textured PMN-PT monolithic ceramics. Journal of the European Ceramic Society, v. 27, p. 2463-2469, 2007.
ALBAREDA, A. ; PEREZ, R. ; GARCIA, J. E. ; OCHOA, D. A. ; GOMIS, V. ; EIRAS, JA. . Influence of donor and acceptor substitutions on the extrinsic behavior of PZT piezoceramics. Journal of the European Ceramic Society, v. 27, p. 4025-4028, 2007.
FAVARETTO, R ; GARCIA, D ; EIRAS, JA. Effects of WO3 on the microstructure and optical transmittance of PLZT ferroelectric ceramics. Journal of the European Ceramic Society, v. 27, p. 4037-4040, 2007.
CALAS, H. ; FIGUEREDO, J. ; MORENO, E. ; EIRAS, JA; LEIJA, L. ; VERA, A. . A model for radial modes in piezoelectric disk exhibiting Bessel polarizations. Applied Physics Letters, v. 91, p. 263509-1-263509-3, 2007.
MIR, M ; DEPAULA, C ; GARCIA, D ; KIMINAMI, R ; EIRAS, J A; MASCARENHAS, Y . Microstructural characterization using the Rietveld method in lead lanthanum titanate ceramics system produced by combustion synthesis. Journal of the European Ceramic Society, v. 27, p. 3719-3721, 2007.
VENET, M ; SANTOS, I A ; EIRAS, JA; GARCIA, D . Potentiality of SBN textured ceramics for pyroelectric applications. Solid State Ionics, v. 177, p. 589-593, 2006.
I. Núñez ; DODAT, D. ; AULET, A. ; ARZUA, A. ; NEGREIRA, C. A. ; EIRAS, JA. Fast Reconstruction or the Ultrasonic Bessel Transducer Field by Using Schlieren Techniques. Ferroelectrics, v. 333, p. 107-113, 2006.
FALCAO, E. A. ; PEREIRA, J. R. D. ; SANTOS, I. A. ; NUNES, A. R. ; MEDINA, A. N. ; BENTO, A. C. ; BAESSO, M L ; GARCIA, D ; EIRAS, JA. Thermo Optical Properties of Transparent PLZT 10/65/35 Ceramics. Ferroelectrics, v. 336, p. 191-196, 2006.
CAMARGO, A. S. S. ; BOTERO, E. R. ; GARCIA, D ; EIRAS, Jose Antonio ; NUNES, L. A. O. . Nd3+-doped lead lanthanum zirconate titanate transparent ferroelectric ceramic as a laser material: Energy transfer and stimulated emission. Applied Physics Letters, USA, v. 86, n.15, p. 152905-1-152905-3, 2005.
GUERRA, J de Los Santos ; GARCIA, D ; EIRAS, JA ; SOMIYA, Y. ; CROSS, L. ; BHALLA, A S . Microwave dielectric response of (Sr0.80 Pb0.20)TiO3 based ferroelectrics composites. Journal of the European Ceramic Society, v. 25, p. 2089-2092, 2005.
VENET, M ; VENDRAMINI, A ; ZABOTTO, F. L. ; GUERRERO, F. ; GARCIA, D. ; EIRAS, JA. Piezoelectric properties of undoped and titanium or barium-doped lead metaniobate ceramics. Journal of the European Ceramic Society, v. 25, p. 2443-2446, 2005.
PICININ, A ; LENTE, M. H. ; EIRAS, JA; RINO, J. P. . Theoretical and Experimental Investigations of Polarization Switching in Ferroelectric Materials. Physical Review B – Solid State, Estados Unidos, v. 69, p. 1-8, 2004.
CAMARGO, A. S. S. ; NUNES, L. A. D. ; SANTOS, I A ; GARCIA, D ; EIRAS, JA . Structural and spectroscopic properties of rare-earth (Nd3+, Er3+, and Yb3+) doped transparent lead lanthanum zirconate titanate ceramics. Journal of Applied Physics, Estados Unidos, v. 95, n.4, p. 2135-2140, 2004.
SANTOS, I A ; GARCIA, D ; EIRAS, JA; ARANTES, V L . Features of diffuse phase transition in lead barium niobate ferroelectric ceramics. Journal of Applied Physics, United States, v. 93, n.3, p. 1701-1706, 2003.
VENET, M ; GARCIA, D ; EIRAS, JA; PEKO, J. ; AMORIN, H. . Ferroelectric Properties of Lanthanum and Titanium Modified SBN Ceramic System. Physica Status Solidi. B, Basic Research, Weinheim, v. 238, p. 198-203, 2003.
BALTAZAR RODRIQUES, J.; EIRAS, JA. Preparation and characterization of PLT thick-films produced by a chemical route. Journal of the European Ceramic Society, v. 22, n.16, p. 2927-2932, 2002.
LENTE, M H ; EIRAS, JA. Domain reorientation anisotropy in ferroelectric polycrystals. Journal of Applied Physics, v. 92, n.4, p. 2112-2117, 2002.
LANCIOTTI JR, F. ; PIZANI, P. S. ; SANTOS, I A ; CARMO, C. V. ; GARCIA, D ; EIRAS, JA . Raman scattering investigation on the phase evolution of ferroelectric lead barium niobate. Journal of Physics and Chemistry of Solids, v. 62, n.7, p. 1247-1250, 2001.
LIMA, K C V ; SOUZA FILHO, A G ; AYALA, A P ; MENDES FILHO, J ; FREIRE, P. T. C. ; MELO, F e A ; ARAUJO, E. B. ; EIRAS, JA . Raman study of morphotropic phase boundary in PbZr1-xTixO3 at low temperatures. Physical Review B – Condensed Matter and Materials Physics, v. 63, n.18, p. 41051-41055, 2001.
SANTOS, I. A ; EIRAS, JA . Phenomenological description of the diffuse phase transition in ferroelectrics. Journal of Physics. Condensed Matter, v. 13, n.50, p. 11733-11740, 2001.
SANTOS, I. A ; GARCIA, D ; EIRAS, JA ; MANOEL, e R ; HERNANDES, A C . Field-induced sharp ferroelectric phase transition in Sr0.66Ba0.34Nb2O6 relaxor ferroelectric. Applied Physics Letters, v. 79, n.17, p. 2800-2802, 2001.
SANTOS, I. A ; ENDO, C. ; ZANIN, A. ; LENTE, M. H. ; EIRAS, Jose Antonio ; GARCIA, D . Hot-pressed transparent PLZT ceramics from low cost chemical processing. Materials Research, v. 4, n.4, p. 291-295, 2001.
LENTE, M. H. ; EIRAS, J.A. . 90º Domain Reorientation and Domain Wall Rearrangement in lead Zirconate Titanate Ceramics Characterized by transient current and Hysteresis Loop Measurements. Journal of Applied Physics, v. 89, p. 5093-5099, 2001.
SOUZA FILHO, A G ; LIMA, K C V ; AYALA, A P ; GUEDES, L. ; FREIRE, P. T. C. ; MENDES FILHO, J. ; ARAUJO, E. B. ; EIRAS, J.A. . Monoclinic phase of PZT ceramics: Raman and phenomenological theory studies. Physical Review B – Condensed Matter and Materials Physics, v. 61, n.21, p. 14283-14286, 2000.
MORENO-GOBBI, A. O. ; MACHO, M. P. ; PAOLINI, G. ; NEGREIRA, C. A. ; GARCIA, D. ; EIRAS, J. A. .Ultrasound studies of phase transitions in tungsten bronze ferroelectric materials. Journal of Alloys and Compounds, v. 310, n.1-2, p. 29-31, 2000.
LENTE, M. H. ; EIRAS, J.A.. Interrelationship between self-heating and ferroelectric properties in PZT ceramics during polarisation reorientation. Journal of Physics. Condensed Matter, Inglaterra, v. 12, p. 5939-5950, 2000.
ARAUJO, E. B. ; EIRAS, J.A. . Preparation of PZT, PLZT and Bi4Ti3O12 thin films from oxide precursors. Journal of the European Ceramic Society, LONDON, v. 19, n.6-7, p. 1453-1456, 1999.
CARMO, C. V. ; PAULA, R N de ; PÓVOA, J. M. ; GARCIA, D ; EIRAS, J.A.. Phase Evolution and Densification Behavior of PBN Ceramics. Journal of the European Ceramic Society, LONDON, v. 19, n.6-7, p. 1057-1060, 1999.
SPÍNOLA, D. U. ; SANTOS, I. A. ; BÁSSORA, L A ; EIRAS, J.A. ; GARCIA, D . Dielectric properties of rare earth doped (Sr, Ba) Nb2O6 ceramics. Journal of the European Ceramic Society, LONDON, v. 19, n.6-7, p. 1111-1114, 1999.
BASSORA, L A ; EIRAS, J. A. . Dielectric relaxation in PLT (Pb1-xLaxTiO3) in the microwave region (0.05 – 2 GHz). Ferroelectrics, LONDON, v. 223, n.1-4, p. 285-292, 1999.
GELFUSO, M V ; THOMAZINI, D. ; EIRAS, J.A. . Synthesis, structural, ferroelectric and piezoelectric properties of SrBi4Ti4O15 ceramics. Journal of the American Ceramic Society, v. 82, n.9, p. 2368-2372, 1999.
MENDES, R G ; ARAUJO, E. B. ; EIRAS, J.A. . Influence of heat treatment on crystallization on strontium barium niobate ferroelectric thin films. Journal of Physics. Condensed Matter, Bristol, v. 11, n.48, p. 9611-9617, 1999.
ARAUJO, E. B. ; BRATUSEK, J. ; GARCIA, D ; EIRAS, J.A.. Optimization of conditions to prepare PLZT thin films from oxide precursors. Journal of Materials Science, LONDON, v. 18, n.23, p. 1961-1962, 1999.
TAVARES, E. C. S. ; PIZANI, P. S. ; EIRAS, J.A.. Short range disorder in lanthanum-doped lead titanate ceramics probed by raman scattering. Applied Physics Letters, v. 72, n.8, p. 897-899, 1998.
PÓVOA, J. M. ; MOREIRA, E. N. ; GARCIA, D. ; SPINOLA, D. U. P. ; CARMO, C. G. V. ; EIRAS, J.A.. Phase transition and dielectric characteristics of tungsten bronze ceramics. Journal of the Korean Physical Society, v. 32, p. S1046-S1048, 1998.
MOREIRA, E. N. ; LENTE, M. H. ; PÓVOA, J. M. ; EIRAS, J.A.. A study on domain reorientation in PZT ceramics. Journal of the Korean Physical Society, v. 32, p. S742-S743, 1998.
ARAUJO, E. B. ; EIRAS, J. A. . PZT Thin Films Obtained From Oxide Precursors. Journal of Materials Science, NORWELL-MA, v. 17, p. 833-835, 1998.
GELFUSO, M. V. ; EIRAS, J.A.. Low temperature sintering of lead zirconate-titanate with V2O5. Acta Microscópica, v. 5, p. 92-93, 1996.
THOMAZINI, D. ; GELFUSO, M. V. ; EIRAS, J.A. . Dielectric properties of bismuth compounds with layered structures. Acta Microscópica, v. 5, p. 136-137, 1996.
MORENO-GOBBI, A. O. ; EIRAS, J.A. . Dislocation damping and associated modulus defect In cooper crystals. Journal of Alloys and Compounds, v. 211-2, p. 152-154, 1994.
MOREIRA, E. N. ; EIRAS, J.A. . Influence of heterovalente doping on relaxor behavior of PLZT 9/65/35. Ferroelectrics, London – GB, v. 158, p. 271-276, 1994.
GARCIA, D. ; MOREIRA, E. N. ; BALTAZAR-RODRIGUES, J. ; EIRAS, J. A. . Relaxor characteristics of PLZT 9/65/35 related to raw materials morphology. Electroceramics, v. 4, n.1, p. 421-424, 1994.
MENEGAZZO, B. A. ; EIRAS, J. A.. Preparation of coprecipitated ferroeletric ceramic powders by two stage calcination.. Journal of the American Ceramic Society, Easton – US, v. 76, n.11, p. 2734-2736, 1993.
EIRAS, J.A. ; GARCIA, D. Piezoelectric and dielectric properties of some La, Mn modified PbTiO3 ceramics. Ferroelectrics, London – GB, v. 123, n.1-2, p. 51-59, 1991.

References: v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 V. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 V. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 V. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 V. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v. 
 V. 
 v. 
 v. 
 v. 
 V. 
 v. 
 V. 
 v. 
 v. 
 v. 
 v. 
 v. 
 v.