Exploració per autor "Mestres, Lourdes"
Ara es mostren els items 1-8 de 8
-
CO oxidation on ceria studied by electrochemical impedance spectroscopy
Vendrell Villafruela, Xavier; Kubyshin, Yu A.; Mestres, Lourdes; Llorca Piqué, Jordi (2020-09-14)
Article
Accés obertElectrochemical impedance spectroscopy technique has been widely used to analyze the electrical properties of a large number of materials. In this study, the electrical properties of CeO2 pellets under CO oxidation conditions ... -
Elastic, dielectric and electromechanical properties of (Bi0.5Na0.5)TiO3-BaTiO3 piezoceramics at the morphotropic phase boundary region
Machado, Rodrigo; dos Santos, Valdeci B.; Ochoa Guerrero, Diego A.; Cerdeiras Montero, Elena; Mestres, Lourdes; García García, José Eduardo (2017-01-05)
Article
Accés obertA systematic study of the functional properties of the (1-x)(Bi0.5Na0.5)TiO3–xBaTiO3 (BNT-xBT) piezoceramic system for 0.05 = x = 0.07 is performed. The samples are obtained through the conventional solid-state route. The ... -
Growth and physical properties of highly oriented La-doped (K,Na)NbO3 ferroelectric thin films
Vendrell Villafruela, Xavier; Raymond, Oscar; Ochoa Guerrero, Diego A.; García García, José Eduardo; Mestres, Lourdes (2015-02-27)
Article
Accés obertLead-free (K,Na)NbO3 (KNN) and La doped (K,Na)NbO3 (KNN-La) thin films are grown on SrTiO3 substrates using the chemical solution deposition method. The effect of adding different amounts of Na and K excess (0-20 mol%) is ... -
Improving the functional properties of (K0.5Na0.5)NbO3 piezoceramics by acceptor doping
Vendrell Villafruela, Xavier; García García, José Eduardo; Bril, X; Ochoa Guerrero, Diego A.; Mestres, Lourdes; Dezanneau, Guillem (Elsevier, 2015-01-01)
Article
Accés obertZrO2 and TiO2 modified lead-free (K0.5Na0.5)NbO3 (KNN) piezoelectric ceramics are prepared by a conventional solid-state reaction. The effect of acceptor doping on structural and functional properties is investigated. A ... -
Influence of the type of rare-earth cation on electrical properties of Ba(Zr,Ti)O3 ceramics
Delgado del Toro, Ariel; Guerrero Peña, E; Leyet Ruiz, Yuri; Guerrero Zayas, Fidel; Mestres, Lourdes; Ochoa Guerrero, Diego A.; García García, José Eduardo (2011-02)
Article
Accés obertEn este artículo es investigado el efecto del radio iónico de diferentes cationes de tierras raras sobre las propiedades eléctricas del compuesto Ba(Zr,Ti)O3. La cerámica BaZr0.09Ti0.9O3 fue dopada con iones de Gd3+, Pr3+ ... -
Phase transition characteristics and dielectric properties of rare-earth (La, Pr, Nd, Gd) doped Ba(Zr0.09Ti0.91)O-3 ceramics
Diez Betriu, Xavier; García García, José Eduardo; Ostos, Carlos; Boya Pimentel, Aurelio Urbano; Ochoa Guerrero, Diego A.; Mestres, Lourdes; Pérez Pérez, Rafael (2010-02-15)
Article
Accés restringit per política de l'editorialA-site deficient rare-earth doped barium zirconate titanate (BZT) ceramics (Ba1−yLn2y/3)Zr0.09Ti0.91O3 (Ln = La, Pr, Nd, Gd) are obtained by a modified solid-state reaction method. Perovskite-like single-phase compounds ... -
Structural and electrical properties of Zr-doped K0.48Na0.52NbO3 ceramics: "Hard" lead-free piezoelectric
Beltrán Mir, Hector; Vendrell Villafruela, Xavier; Dos Santos Veiga, Emerson Luiz; Mestres, Lourdes; Cordoncillo, Eloísa (Elsevier, 2023-10-01)
Article
Accés obertThe structural and electrical properties of K0.48Na0.52Nb1-xZrxO3-d (x = 0–0.04) ceramics prepared by the conventional solid-state reaction method were studied. Pellets with composition x = 0.03 sintered at 1125 °C for 2 ... -
Tailoring the microstructure by a proper electric current control in flash sintering: The case of barium titanate
López Blanco, Samuel; Ochoa Guerrero, Diego A.; Vendrell Vilafruella, Xavier; Mestres, Lourdes; García García, José Eduardo (Elsevier, 2022-10)
Article
Accés obertFlash sintering is arousing growing interest because high-density ceramics can be obtained at lower temperatures and shorter dwell times than conventional sintering. However, not only temperature and dwell times should be ...