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Autor Rivera Calzada, Alberto Carlos |
Documentos disponibles escritos por este autor (27)
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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[...]![]()
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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[...]![]()
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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[...]![]()
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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 [...]![]()
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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 [...]![]()
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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[...]![]()
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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[...]![]()
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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, [...]![]()
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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[...]![]()
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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[...]![]()
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Durá, O. J. ; Boada, R. ; López de la Torre, M.A. ; Aquilanti, G. ; Rivera Calzada, Alberto Carlos ; León Yebra, Carlos ; Chaboy, J. | American Physical Society | 2013The local order around Zr and Y atoms of nanocrystalline yttria-stabilized zirconia (YSZ) powders with different grain sizes has been investigated by x-ray absorption spectroscopies. The samples were prepared by means of mechanical alloying with[...]![]()
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Scigaj, M. ; Dix, N. ; Cabero Piris, Mariona ; Rivera Calzada, Alberto Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Fontcuberta, J. | Amer Inst Physics | 2014-06-23We show that yttria-stabilized zirconia (YSZ) films deposited on structurally dissimilar SrTiO_(3)(110) substrates exhibit two-dimensional layer-by-layer growth. We observed that, up to a thickness of about 15 nm, the square (001) basal plane of[...]