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Autor Piqueras de Noriega, Javier |
Documentos disponibles escritos por este autor (322)
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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
Remote electron beam induced current (REBIC) measurements have been carried out to investigate electrically active regions in YBa_2Cu_3O_(7-x) single crystals. Enhanced REBIC contrast, found in growth steps and other topographic features of the [...]texto impreso
García, J.A. ; Plugaru, R ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Tate, T. J. | Cambridge Univ Press | 2004-07The luminescence of amorphous silicon layers either implanted with Er or co-implanted with Er and O has been studied by photoluminescence (PL) and cathodoluminescence (CL) in the scanning electron microscope. Annealing in nitrogen causes the for[...]texto impreso
Cebriano Ramírez, Teresa ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Springer | 2013-05Sb_2O_3 microrods of the orthorhombic phase have been grown by evaporation deposition with Sb powder as precursor. The rods, of rectangular cross section, are composed of weakly bonded stacks of tiny plates of few hundreds of nanometres, which s[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Piqueras de Noriega, Javier | American Institute of Physics | 1989-09-15Polycrystalline GaP and InP have been observed by scanning electron acoustic microscopy. While grain boundaries show a weak contrast, twinned regions are clearly revealed. Results suggest that the contrast observed is related to signal generatio[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Pergamon-Elsevier Science Ltd | 1993-09The temperature dependence of scanning electron acoustic microscopy (SEAM) and cathodoluminescence signals of B_i2Sr_2CaCu_2O_x samples have been measured. The evolution of SEAM signal with temperature between 90 and 300 K indicates the capabili[...]texto impreso
Some scanning electron acoustic microscopy (SEAM) applications to the characterization of electronic materials are discussed. The specific problem of the observation of dislocations and dislocation-related features in GaAs is treated as an examp[...]texto impreso
Dislocation lines in {110} sections of In-doped GaAs are imaged by scanning electron acoustic microscopy (SEAM). Cathodoluminescence measurements show the presence of a high indium concentration at dislocations. It is proposed that the semi-insu[...]texto impreso
Urchulutegui, M. ; Piqueras de Noriega, Javier ; LLopis, J. | American Institute of Physics | 1989-04-01The capability of scanning electron?acoustic microscopy in the characterization of MgO crystals has been studied. The conditions for the observation of different surface and subsurface features in as?grown and deformed crystals are described and[...]texto impreso
Urbieta Quiroga, Ana Irene ; Piqueras de Noriega, Javier ; Muñoz, V. | Elsevier Science SA | 2000-12-15ZnSe single crystals were grown from n-type microcrystalline boules by a Solid Phase Recrystallization (SPR) method. The recrystallizations were performed under different atmospheres, Ar or Se, and pressures to investigate the influence of growt[...]texto impreso
Urbieta, C. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Muñoz, V. | Elsevier Science SA | 2001-03-22ZnSe single crystals were grown from n-type microcrystalline boules by :I solid phase recrystallization (SPR) method. During. SPP,. twinned regions appear with different electronic recombination properties. The recrystallizations were performed [...]texto impreso
Urbieta, S. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Vasco, E. ; Zaldo, C | Wiley-V C H Verlag Gmbh | 2003-01Highly (001) textured ZnO films grown on (100)InP by pulsed laser deposition have been studied by Scanning Tunneling Microscopy (STM). Constant current images show a well defined grain structure, which allows to perform local spectroscopic studi[...]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
Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier ; Golubev, VG. ; Kurdyukov, D.A. ; Pevtsov, A. B. ; Zamoryanskaya, M. V. | Amer Inst Physics | 2002-11-13Scanning tunneling microscopy and scanning tunneling spectroscopy (STS) are used to investigate the local electronic behavior of Pt-Si nanostructures fabricated in an opal matrix formed by silica spheres of 250 nm diameter. Si and Pt are regular[...]