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Autor Hidalgo Alcalde, Pedro |
Documentos disponibles escritos por este autor (67)
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Hidalgo Alcalde, Pedro ; Liberti, Emanuela ; Rodriguez lazcano, Yamilet ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Amer Chemical Soc | 2009-10-01GeO_2 nanowires doped with Eu, Er, or Mn, as well as codoped with each of these ions and Sri, have been grown by a catalyst-free vapor-solid process. The incorporation of Sri has been found, in all cases, to favor the formation of straight wires[...]texto impreso
Sochinskii, N. V. ; Saucedo, E. ; Abellan, M. ; Rodríguez Fernández, José ; Hidalgo Alcalde, Pedro ; Piqueras de Noriega, Javier ; Ruiz, C.M. ; Bermudez, V. ; Dieguez, E. | Elsevier Science BV | 2008-04Cadmium telluride (CdTe) crystals and epitaxial layers were grown by the vertical Bridgman method and vapor-phase epitaxy, respectively, to obtain the high-resistive material suitable for X- and gamma-ray detectors. The crystals and layers were [...]texto impreso
Carcelen, V. ; Hidalgo Alcalde, Pedro ; Rodríguez Fernández, J. ; Dieguez, E. | American Institute of Physics | 2010-05-01The II-VI compound semiconductor cadmium zinc telluride (CZT) is very useful for room temperature radiation detection applications. In the present research, we have successfully grown Bi doped CZT single crystals with two different zinc concentr[...]texto impreso
Carcelen, V. ; Hidalgo Alcalde, Pedro ; Rodríguez Fernández, J. ; Dieguez, E. | American Institute of Physics | 2010-05-01The II-VI compound semiconductor cadmium zinc telluride (CZT) is very useful for room temperature radiation detection applications. In the present research, we have successfully grown Bi doped CZT single crystals with two different zinc concent[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | IOP publishing ltd | 2007-04-18High aspect ratio GeO_2 nano- and microwires have been grown by thermal treatment at 600 degrees C of compacted Ge powder under argon flow. The wires have cross-sectional dimensions from less than 100 nm to about 1 mu m, depending on the duratio[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Dutta, P. S. | Materials Research Society | 1998Cathodoluminescence (CL) in the scanning electron microscope (SEM) has been used to investigate the effect of doping with an isoelectronic dopant, aluminum, on the native accepters and on the general structure of extended defects of gallium anti[...]texto impreso
Bartolomé Vílchez, Javier ; Hidalgo Alcalde, Pedro ; Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | American Institute of Physics | 2014-04-21Electric field induced mechanical resonances of In2O3 microrods are studied by in-situ measurements in the chamber of a scanning electron microscope. Young's moduli of rods with different cross-sectional shapes are calculated from the resonance [...]texto impreso
Rodríguez Fernández, Beatriz ; Hidalgo Alcalde, Pedro ; Piqueras de Noriega, Javier ; Méndez Martín, Bianchi | Royal Society of Chemistry | 2020-03-23The growth mechanism of layered alpha-MoO_3 nano- and microplates on the surface of Mo wires during Joule heating has been investigated by application of an external electric field to the current carrying wire. The observed rapid growth of the s[...]texto impreso
Cepeda Jiménez, C. M. ; Hidalgo Alcalde, Pedro ; Pozuelo, M. ; Ruano, O. A. ; Carreño, F. | Springer | 2010-01Two aluminum multilayer laminates have been processed by hot roll bonding following similar processing paths. The first one is constituted by alternated Al 2024 and Al 1050 layers (ALH19) and the second one by alternated Al 7075 and Al 1050 laye[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Dutta, P. S. ; Dieguez, E. | IOP publishing ltd | 1997Cathodoluminescence (CL) in the scanning electron microscope (SEM) has been used to investigate the effect of doping with chromium and vanadium on the native accepters and on the general structure of extended defects of gallium antimonide single[...]texto impreso
The 7075 alloy is an Al-Zn-Mg-Cu wrought age-hardenable aluminum alloy widely used in the aeronautical industry. The alloy was accumulative roll bonded at 300 A degrees C (573 K), 350 A degrees C (623 K), and 400 A degrees C (673 K), and the mic[...]texto impreso
Influence of thermal environments on the growth of bulk cadmium zinc telluride (CZT) single crystals
Carcelen, V. ; Vijayan, N. ; Rodríguez Fernández, J. ; Hidalgo Alcalde, Pedro ; Piqueras de Noriega, Javier ; Sochinskii, N. V. ; Pérez, J. M. ; Dieguez, E. | Elsevier Science BV | 2009-02-15The II-VI compound semiconductor crystal cadmium zinc telluride (CZT) is very important in the field of room-temperature radiation detectors and medical imaging applications. In the present study, bulk CZT single crystal has been grown by (i) os[...]texto impreso
Cepeda Jiménez, C. M. ; Hidalgo Alcalde, Pedro ; Pozuelo, M. ; Ruano, O. A. ; Carreño, F. | CENIM | 2010The microstructure and mechanical properties in the interface region of a multilayer laminate based on high strength aluminium alloys, Al 7075 and Al 2024, have been characterized mainly by EBSD and shear tests. It is shown that the time of solu[...]texto impreso
This paper describes the "pairing - dissociation" behaviour of metal-acceptor pairs and proposes a method to measure metal concentrations in p-type boron doped silicon based on a contactless measurement technique. The first part of this paper su[...]texto impreso
Ottaviani, L. ; Yakimov, E. ; Hidalgo Alcalde, Pedro ; Martinuzzi, S. | Trans Tech Publications Ltd | 2004Hydrogen is known to passivate donor and acceptor levels in SiC bulk, and also at the surface by forming bonds with Si atoms. Introduction of H atoms can then improve the electrical performance of Schottky diodes by reducing the metal-SiC interf[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Dutta, P: S. ; Piqueras de Noriega, Javier ; Dieguez, E. | American Physical Society | 1998-03-15The luminescence properties of transition-metal (Cr, V, and Ru)-doped GaSb single crystals have been studied by a cathodoluminescence (CL) technique in a scanning electron microscope. Spatial segregation of impurities along the longitudinal dire[...]texto impreso
Corrochano, J. ; Hidalgo Alcalde, Pedro ; Lieblich, M. ; Ibañez, J. | Elsevier Science INC | 2010-11The mechanical properties of particle-reinforced aluminum matrix composites (AMCs) are largely dependent on the microstructure of the materials, which in turn is largely dependent on the processing history [1]. Powder metallurgy (PM) is a common[...]texto impreso
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Cepeda Jiménez, C. M. ; Hidalgo Alcalde, Pedro ; Carsi, M. ; Ruano, O. A. ; Carreño, F. | Elsevier Science SA | 2011-03-25Hot torsion tests to fracture to simulate thermomechanical processing were carried out on a solution-treated Al-Cu-Mg alloy (Al 2024-T351) at constant temperature. Torsion tests were conducted in the range 278-467 degrees C, and at two strain ra[...]texto impreso
Plaza, J. L. ; Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Dieguez, E. | Elsevier Science SA | 2000-02-14In this work several changes induced by polishing, chemical etching and thermal treatment in the properties of Er- and Nd-doped GaSb substrates with different doping levels grown by the vertical Bridgman method have been studied. The analysis ha[...]texto impreso
Clericò, Vito ; Delgado Notario, J. A. ; Saiz Bretín, Marta ; Malyshev, Andrey ; Meziani, Y. M. ; Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Amado, M. ; Domínguez Adame Acosta, Francisco ; Díaz Fernández, Enrique | Nature Publishing Group | 2019-09-19We report on a novel implementation of the cryo-etching method, which enabled us to fabricate low-roughness hBN-encapsulated graphene nanoconstrictions with unprecedented control of the structure edges; the typical edge roughness is on the order[...]texto impreso
Rodríguez Fernández, J. ; Carcelen, V. ; Hidalgo Alcalde, Pedro ; Vijayan, N. ; Piqueras de Noriega, Javier ; Sochinskii, N. V. ; Pérez, J. M. ; Dieguez, E. | Amer Inst Physics | 2009-08-15Cadmium zinc telluride, CdZnTe, bulk single crystals doped with 10^19 at./cm^3 of indium in the initial melt were grown by vertical Bridgman technique. The samples were investigated by energy dispersive spectroscopy, cathodoluminiscence (CL), an[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Dutta, P: S. ; Dieguez, E. | American Physical Society | 1999-10-15V- and Ru-doped GaSb crystals have been investigated by scanning tunneling spectroscopy in a combined scanning electron microscope-scanning tunneling microscope system. Local variations of surface band gap have been measured with high spatial re[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Plaza, J. L. ; Dieguez, E. | American Institute of Physics | 1999-08-01Er doped GaSb single crystals have been studied by scanning tunneling spectroscopy (STS) and cathodoluminescence (CL) in a combined scanning electron microscope-scanning tunnelling microscope system. The surface band gap in doped samples has bee[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | IOP publishing ltd | 2008-11-12Sn doped GeO_2 nanowires and microwires have been grown by an evaporation-deposition method, using a mixture of Ge and SnO_2 powders as precursors. Comparison with undoped GeO_2 nanowires grown by the same method shows that the presence of Sn pr[...]