Ciencias,UNAM

Browsing by Author "Murrieta, H"

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Browsing by Author "Murrieta, H"

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  • Bi4Ge3O12 : Nd3+ and Bi12SiO20 : Nd3+ - A comparative spectroscopic study
    Camarillo, E; Loro, H; Murrieta, H; Hernández, J (2001)
    A systematic and comparative study of luminescence and optical absorption properties of the trivalent rare earth neodymium ion in the Bi4Ge3O12 and Bi12SiO20 crystal lattices is presented. The incorporation of Nd3+ ions ...
  • DETECTION OF CR3+ SITES IN LINBO3MGO,CR3+ AND LINBO3CR3+
    GarcíaSOLE, J; López, FJ; Hernández, J; Jaque, F; Camarillo, E; Murrieta, H (1993)
    In this work, experimental results describing Cr3+ sites in LiNbO3:Cr and LiNbO3:MgO,Cr previously determined with electron-paramagnetic-resonance (EPR), electron-nuclear-double-resonance, and optical techniques, are ...
  • ESR and optical absorption studies of gamma- and electron-irradiated sugar crystals
    Flores, C; Cabrera, E; Calderon, T; Adem, E; Boldu, J; Ovalle, P; Murrieta, H; Hernández, J; Muñoz, E (2000)
    Electron spin resonance (ESR) studies of the free radicals induced in gamma- or electron-irradiated sugar crystals were performed, The number of radicals increases linearly, pointing out that this material can be used as ...
  • Experimental study and crystal-field modeling of Nd3+ (4f(3)) energy levels in Bi4Ge3O12 and Bi4Si3O12
    Loro, H; Vasquez, D; Camarillo, E; del Castillo, H; Camarillo, I; Flores, C; Murrieta, H; Hernández, J; Muñoz, G (2007)
    Most of the L-2S+1(J) multiplets of the Nd3+ ion (4f(3)) in Bi4Ge3O12 and Bi4Si3O12 single crystals have been experimentally observed in the UV, visible, and NIR spectroscopic regions. The majority of the Stark energy ...
  • LEAD EMISSION FROM THE CADMIUM SUZUKI PHASE IN NACL-CDCL2-PB2+
    VERDIGUEL, H; FLORES, C; Hernández, J; Jaque, F; Murrieta, H (1994)
    The system NaCl:CdCl2:Pb2+ has been studied by the photoluminescence technique. The results for quenched crystals consist of the usual emission bands of Pb2+ in a NaCl matrix: at room temperature, one intense band centred ...
  • ND3+ CENTERS INDUCED BY ZNO OR MGO CODOPING LINBO3
    Hernández, J; GarcíaSOLE, J; Camarillo, E; Caldino, U; Santiuste, JEM; Loro, H; Voda, M; Jaque, F; Murrieta, H (1995)
    Laser spectroscopy has been applied to systematically investigate the effect of MgO or ZnO codoping on the Nd3+ centres formed in LiNbO3. Both codopant oxides produce the same effect, so two new Nd3+ centres appear in both ...
  • Non-radiative energy transfer between impurity ions in crystals: configuration mixing
    Grether, M; Murrieta, H; Rubio, J; López-Moreno, E; Hernández, J (1999)
    In this work, the non-radiative energy transfer mechanism between a pair of distinct dopant ions in a monocrystalline matrix is reviewed, the transfer mechanism is contemplated as a result of the configuration mixing of ...
  • Photoluminescent spectroscopy measurements in nanocrystalline praseodymium doped zirconia powders
    Ramos-Brito, F; Murrieta, H; Camarillo, E; Martínez-Martínez, R; Alvarez-Fragoso, O; Falcony, C; Hernández, J; García-Hipolito, M (2006)
    Praseodymium doped zirconia powder (ZrO2: (0.53 at%) Pr3+) was prepared by a co-precipitation technique and annealed in air at a temperature T-a=950 degrees C. The x-ray diffraction pattern shows a nanocrystalline structure ...