Evaluación de las propiedades luminiscentes y detección de Eu2+ en partículas nanoestructuradas del sistema Gd2-xEuxO3 (x=0.05, 0.10 y 0.30) = Evaluation of luminescent properties and detection of Eu2+ in nanostructured particles of Gd2-x EuxO3 system (x=0.05, 0.10 and 0.30) Articles uri icon

publication date

  • October 2012

start page

  • 255

end page

  • 260


  • 5


  • 51

International Standard Serial Number (ISSN)

  • 0366-3175

Electronic International Standard Serial Number (EISSN)

  • 2173-0431


  • Spray Pyrolysis (SP) is performed at 700 degrees C in dry air atmosphere using common nitrate aqueous solutions (0,1M) as precursor in order to obtain nanostructured particles with the composition Gd2-xEuxO3 (x= 0.05, 0.10 and
    0.30). In this work, three samples with different atomic europium concentration
    (1, 2 and 6%) were studied. After, the obtained particles were subjected to
    different thermal treatments with varying temperatures between 800 and 1000
    degrees C/12 h in dry air atmosphere. The obtained particles were characterized
    by XRD, SEM techniques, laser dispersion and steady state fluorescence
    spectroscopy. The existence of two cubic phases with different symmetry cubic
    phases (Ia-3, Fm-3m) was identified within the "as-prepared" samples. Moreover,
    the presence of Gd2O3 monoclinic phase (C-2/m) which disappears during the
    thermal treatments was proved. In all thermally treated samples, it was observed
    the stabilization of an only Ia-3 phase. Fluorescence emission measurements in
    all studied samples the presence of Eu2+ (lambda= 430nm), whose intensity
    increases as long as the content of the monoclinic phase decreases of the Eu3+