Artigo

Relationship between ferroelectric properties and local structure of Pb1−xBaxZr0.40Ti0.60O3 ceramic materials studied by X-ray absorption and Raman spectroscopies

Writers: Alexandre Mesquita, Alain Michalowicz, Jacques Moscovici, Paulo Sergio Pizani, Valmor Roberto Mastelaro Keywords: Ferroelectrics; Relaxor, PBZT; PZT, EXAFS; Raman Abstract: This paper reports on the structural characterization of Pb1−xBaxZr0.40Ti0.60O3 (PBZT) ferroelectric ceramic compositions prepared by […]

Artigo

Maternal and fetal outcomes in pregnancies complicated by overweight and obesity

Writers: Joice Monaliza Vernini, Jusciele Brogin Moreli, Claudia Garcia Magalhães, Roberto Antônio Araújo Costa, Marilza Vieira Cunha Rudge and Iracema Mattos Paranhos Calderon Keywords: Obesity; Overweight; Pregnancy; Maternal outcomes; Perinatal outcomes Abstract Background Overweight and obesity are associated with pregnancy complications and adverse perinatal outcomes, posing short and long–term risks for maternal and child health. This study […]

Artigo

Increased thermal stabilization of polymer photovoltaic cells with oligomeric PCBM

Writers: Hasina H. Ramanitra, Simon A. Dowland, Bruna A. Bregadiolli, Michael Salvador, Hugo Santos Silva, Didier Bégué, Carlos F. O. Graeff, Heiko Peisert, Thomas Chassé, Sambatra Rajoelson, Andres Osvet, Christoph J. Brabec, Hans-Joachim Egelhaaf, Graham E. Morse, Andreas Distler and Roger C. Hiorns Keywords: polymer; photovoltaic cells; PCBM Abstract: The first oligomerisation of phenyl-C61-butyric acid […]

Artigo

Formation of Ag Nanoparticles on beta-Ag2WO4 through Electron Beam Irradiation: A Synergetic Computational and Experimental Study

Writers: Roman A. Roca, Amanda F. Gouveia, Pablo S. Lemos, Lourdes Gracia, Juan Andrés, and Elson Longo Keywords: Nanoparticles; Synergetic Computational; Experimental Study Abstract: In the present work, a combined theoretical and experimental study was performed on the structure, […]

Artigo

Disclosing the electronic structure and optical properties of Ag4V2O7 crystals: experimental and theoretical insights

Writers: R. C. de Oliveira,  L. Gracia,   M. Assis,   M. Siu Li,  J. Andres,   E. Longo and   L. S. Cavalcante Keywords: crystals; electronic structure; optical properties Abstract: This work combines experimental and computational techniques to exploit the best of both methodologies […]

Artigo

Highly dense and textured superconducting (Bi,Pb)(2)Sr2Ca2Cu3O10+delta ceramic samples processed by spark-plasma texturing

Writers: L. Pérez-Acosta and E. Govea-Alcaide and J.G. Noudem and I.F. Machado and S.H. Masunaga and R.F. Jardim Keywords: Cuprates superconductors; Texture; Spark-plasma; Anisotropy Abstract: Consolidated powders of the superconducting cuprate Bi1.65Pb0.35Sr2Ca2Cu3O10+δ (Bi-2223) by the spark-plasma texturing (SPT), […]

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