Información del autor
Autor Rivera Calzada, Alberto Carlos |
Documentos disponibles escritos por este autor (27)
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González Merchante, Daniel ; Cortés Gil, Raquel ; Alonso Rodríguez, José María ; Matesanz Sáez, Emilio ; Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Ruiz González, María Luisa ; González Calbet, José María | International Union of Crystallography | 2019-07Ruddlesden-Popper oxides, (AO)(ABO_3))_n, occupy a prominent place in the landscape of materials research because of their intriguing potential applications. Compositional modifications to the cation sublattices, A or B, have been explored in or[...]texto impreso
Peña, V. ; Rivera Calzada, Alberto Carlos ; Garcia Barriocanal, Javier ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; García González, E. ; González Calbet, J. M. | Sociedad Española de Cerámica y Vidrio | 2004-01Presentamos medidas de la conductividad eléctrica del sistema BIFEVOX Bi_(4)V_(2-x)Fe_(x)O_(11-y)(0?x?0.9;0?y?1), en el que se realiza la sustitución de iones V (IV) por Fe (III) de forma sistemática. La conductividad muestra un comportamiento p[...]texto impreso
Hernández Martín, David ; Gallego Toledo, Fernando ; Tornos Castillo, Javier ; Rouco Gómez, Víctor ; Beltrán Finez, Juan Ignacio ; Munuera, C. ; Sánchez Manzano, David ; Cabero Piris, Mariona ; Cuéllar Jiménez, Fabián Andrés ; Arias Serna, Diego ; Sánchez Santolino, Gabriel ; Mompean, F. J. ; Gárcia Hernández, M. ; Rivera Calzada, Alberto Carlos ; Pennycook, S. J. ; Varela del Arco, María ; Muñoz, M. C. ; Sefrioui, Zouhair ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2020-12-30The persistence of ferroelectricity in ultrathin layers relies critically on screening or compensation of polarization charges which otherwise destabilize the ferroelectric state. At surfaces, charged defects play a crucial role in the screening[...]texto impreso
León Yebra, Carlos ; Ngai, K. L. ; Rivera Calzada, Alberto Carlos | American Physical Society | 2004-04-16For ionic conductivity relaxation in ionically conducting materials we predict in the framework of the coupling model that the magnitude of the ubiquitous near constant loss correlates with the activation energy E_(a) for independent ion hopping[...]texto impreso
Rivera Calzada, Alberto Carlos ; León Yebra, Carlos ; Sanz, J. ; Santamaría Sánchez-Barriga, Jacobo ; Moynihan, C. T. ; Ngai, K. L. | American Physical Society | 2002-06-10Electrical conductivity measurements of the fast ionic conductor Li_(0.18)La_(0.61)TiO_(3) have been conducted at temperatures ranging from 8 to 300 K and frequencies between 20 Hz and 5 MHz. A detailed analysis of the ac conductivity shows the [...]texto impreso
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Bruno, F. Y. ; Garcia Barriocanal, Javier ; Torija, M. ; Rivera Calzada, Alberto Carlos ; Sefrioui, Zouhair ; Leighton, C. ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2008-02-25Electrical transport properties of heteroepitaxial p-n junctions made of La_(0.8)Sr_(0.2)CoO_(3) and SrTi_(0.99)Nb_(0.01)O_(3) were studied. Junctions display highly rectifying current-voltage characteristics over a wide temperature range (20–30[...]texto impreso
Frechero, M. A. ; Rocci, Mirko ; Schmidt, Rainer ; Díaz Guillén, M. R. ; Durá, O. J. ; Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | Sociedad Española de Cerámica y Vidrio | 2012-01Here we show impedance spectroscopy measurements on a bicrystal of the ionically conducting yttria stabilized zirconia (YSZ). By using micrometer sized electrodes it is possible to measure ionic transport perpendicular to a single grain boundary[...]texto impreso
Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | American Institute of Physics | 2001-01-29We report on complex admittance measurements on ZrO_(2):Y_(2)O_(3) (YSZ) thin films in the parallel plate geometry. Highly textured YSZ thin films, grown by rf sputtering, allow measuring complex admittance free of the effect of charge blocking [...]texto impreso
Tornos Castillo, Javier ; Gallego Toledo, Fernando ; Hernández Martín, David ; Orfila Rodríguez, Gloria ; Cabero Piris, Mariona ; Cuéllar Jiménez, Fabián Andrés ; Arias Serna, Diego ; Rivera Calzada, Alberto Carlos ; Sefriuoi, Zouhair ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2019-01-22The electronic reconstruction occurring at oxide interfaces may be the source of interesting device concepts for future oxide electronics. Among oxide devices, multiferroic tunnel junctions are being actively investigated as they offer the possi[...]texto impreso
Bruno, Flavio Yair ; Grisolia, M. N. ; Visani, C. ; Valencia, S. ; Varela del Arco, María ; Aburdan, R. ; Tornos, J. ; Rivera Calzada, Alberto Carlos ; Ünal, A. A. ; Pennycook, S. J. ; Sefrioui, Zouhair ; León Yebra, Carlos ; Villegas, J. E. ; Santamaría Sánchez-Barriga, Jacobo ; Barthélémy, A. ; Bibes, M. | Nature Publishing Group | 2015-02-17At interfaces between complex oxides, electronic, orbital and magnetic reconstructions may produce states of matter absent from the materials involved, offering novel possibilities for electronic and spintronic devices. Here we show that magneti[...]texto impreso
Durá, O. J. ; López de la Torre, M. A. ; Vázquez, L. ; Chaboy, J. ; Boada, R. ; Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | American Physical Society | 2010-05-01We report on the effect of grain size on the ionic conductivity of yttria-stabilized zirconia samples synthesized by ball milling. Complex impedance measurements, as a function of temperature and frequency are performed on 10 mol % yttria-stabil[...]texto impreso
Prado Gonjal, Jesús de la Paz ; Heuguet, Romain ; Muñoz Gil, Daniel ; Rivera Calzada, Alberto Carlos ; Marinel, Sylvain ; Morán, Emilio ; Schmidt, Rainer | Pergamon-Elsevier Science Ltd | 2015-12-07In this work we report on the combined use of microwave (MW) heating sources for the powder synthesis and the ceramic sintering of Sm and Ca co-doped ceria Ce_(0.8)Sm_(0.18)Ca_(0.02)O_(1.9) polycrystalline materials for potential application as [...]texto impreso
Cabero Piris, M. ; Nagy, K. ; Gallego, F. ; Sander, A. ; Rio, M. ; Cuellar, F.A. ; Tornos, J. ; Hernández Martín, David ; Nemes, Norbert Marcel ; Mompean, F. ; Gárcia Hernández, M. ; Rivera Calzada, Alberto Carlos ; Sefrioui, Zouhair ; Reyren, N. ; Feher, T. ; Varela del Arco, María ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2017-09Controlling magnetic anisotropy is an important objective towards engineering novel magnetic device concepts in oxide electronics. In thin film manganites, magnetic anisotropy is weak and it is primarily determined by the substrate, through indu[...]texto impreso
Movilidad iónica en conductores superiónicos : movilidad local, percolación y relajación vibracional
Rivera Calzada, Alberto Carlos | Universidad Complutense de Madrid, Servicio de Publicaciones | 2003El objetivo de esta Tesis es el estudio de la respuesta dinámica de iones móviles mediante espectroscopia de admitancias y resonancia magnética nuclear en diferentes materiales conductores iónicos. En la memoria se presentan fundamentalmente res[...]texto impreso
León Yebra, Carlos ; Rivera Calzada, Alberto Carlos ; Várez, A. ; Sanz, J. ; Santamaría Sánchez-Barriga, Jacobo | American Physical Society | 2001-02-12We have analyzed the constant loss contribution to the ac conductivity in the frequency range 10 Hz–1 MHz and temperatures down to 8 K, for two Li ionic conductors, one crystalline (Li_(0.18)La_(0.61)TiO_(3)) and the other glassy (61SiO_(2) . 35[...]texto impreso
Frechero, M. A. ; Rocci, Mirko ; Sánchez Santolino, Gabriel ; Salafranca, Juan ; Schmidt, Rainer ; Díaz Guillén, M. R. ; Durá, O. J. ; Rivera Calzada, Alberto Carlos ; Varela del Arco, María ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos | Nature Publishing Group | 2015-12-17The blocking of ion transport at interfaces strongly limits the performance of electrochemical nanodevices for energy applications. The barrier is believed to arise from space-charge regions generated by mobile ions by analogy to semiconductor j[...]texto impreso
Niu, Yue ; Frisenda, Riccardo ; Svatek, Simon A. ; Orfila, Gloria ; Gallego, Fernando ; Gant, Patricia ; Agrait, Nicolás ; León Yebra, Carlos ; Rivera Calzada, Alberto Carlos ; Pérez de Lara, David ; Santamaría Sánchez-Barriga, Jacobo ; Castellanos Gómez, Andrés | IOP Publishing Ltd. | 2017-09The fabrication of artificial materials by stacking of individual two-dimensional (2D) materials is amongst one of the most promising research avenues in the field of 2D materials. Moreover, this strategy to fabricate new man-made materials can [...]texto impreso
Rocci, Mirko ; Tornos Castillo, Javier ; Rivera Calzada, Alberto Carlos ; Sefrioui, Zouhair ; Clement, Marta ; Iborra, Enrique ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo | American Institute of Physics | 2014-03-10We report on the fabrication and magnetotransport characterization of hybrid graphene-based nanodevices with epitaxial nanopatterned La_(0.7)Sr_(0.3)MnO_(3) manganite electrodes grown on SrTiO_(3)(100). The few-layer graphene was deposited onto [...]texto impreso
Pérez Estébanez, Marta ; Rivera Calzada, Alberto Carlos ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Isasi Marín, Josefa | Sociedad Española de Cerámica y Vidrio | 2010-01Haciendo uso de la química sol-gel, se han preparado ortofosfatos de composición LiTi_(2)(PO_(4))_(3) y Li_(1.05)(Cr/Fe)_(0.05)Ti_(1.95)(PO_(4))_(3) a temperaturas moderadas mediante el método Pechini. Estas fases han sido caracterizadas estruct[...]texto impreso
Pérez Estébanez, M. ; Isasi Marín, Josefa ; Rivera Calzada, Alberto Carlos ; León Yebra, Carlos ; Nygren, M. | Elsevier Science SA | 2015-12-05Li_(1+x)M_(x)Ti_(2?x)(PO_(4))_(3) powders with x = 0 and 0.3 and M = Al, Cr and Fe have been sintered by conventional sintering (CS) and Spark Plasma Sintering (SPS), and the electrical properties have been compared. The use of SPS allows prepar[...]texto impreso
Garcia Barriocanal, Javier ; Cezar, J. C. ; Bruno, Flavio Yair ; Thakur, P ; Brookes, N. B. ; Utfeld, C. ; Rivera Calzada, Alberto Carlos ; Giblin, S. R. ; Taylor, S. W. ; Duffy, J. A. ; Dugdale, S. B. ; Nakamura, T. ; Kodama, K. ; León Yebra, Carlos ; Okamoto, S. ; Santamaría Sánchez-Barriga, Jacobo | Nature Publishing Group | 2010-09In systems with strong electron-lattice coupling, such as manganites, orbital degeneracy is lifted, causing a null expectation value of the orbital magnetic moment. Magnetic structure is thus determined by spin–spin superexchange. In titanates, [...]texto impreso
Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; León Yebra, Carlos ; Blochowicz, T. ; Gainaru, C. ; Rössler, E. A. | Amer Inst Physics | 2003-04-14We report on the temperature dependence of the ionic conductivity at low temperatures in the crystalline lithium ionic conductor Li_(0.18)La_(0.61)TiO_(3). Time domain measurements of the electric modulus have been performed to investigate ion d[...]texto impreso
Durá, O. J. ; Boada, R. ; Rivera Calzada, Alberto Carlos ; León Yebra, Carlos ; Bauer, E. ; López de la Torre, M. A. ; Chaboy, J. | American Physical Society | 2011-11-24This work reports on the effect of grain size on the electrical, thermal, and structural properties of CuAlO_(2) samples obtained by solid-state reaction combined with ball milling. Electrical characterization made in microcrystalline and nanocr[...]