High angle annular dark field-scanning transmission electron microscopy and high-resolution transmission electron microscopy studies in the Er2O3-ZrO2 system

被引：6
作者：
Angeles-Chavez, C. [1 ]
Salas, P. [2 ]
Lopez-Luke, T. [3 ]
de la Rosa, E. [3 ]
机构：
[1] Inst Mexicano Petr, Programa Ingn Mol, Mexico City 07730, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76000, Mexico
[3] Ctr Invest Opt, Leon 37160, Mexico
来源：
VACUUM | 2010年 / 84卷 / 10期
关键词：
ZrO2; Er; HAADF-STEM; HR-TEM; Nanocrystals; UP-CONVERSION; HAADF-STEM; MU-M; NANOCRYSTALS; SURFACES; NANOPARTICLES; LUMINESCENCE; PARTICLES; MICELLES; CRYSTALS;
D O I：
10.1016/j.vacuum.2009.10.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZrO2:Er3+ nanocrystals synthesized by the sal-gel method using a non-ionic (PLURONIC P-127) surfactant in order to produce single nanocrystals were characterized. High angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), energy dispersive X-ray spectroscopy and high resolution transmission electron microscopy were used to characterize the zrO(2):Er3+ nanoparticles annealed at 1000 degrees C for 5 h. Single nanocrystals of monoclinic zirconia phase well-dispersed with a faceted morphology were obtained after the calcination. Er atoms were randomly integrated in the zirconia lattice as a subtitutional solid solution. Segregation of Er2O3 phase at the annealing temperature was not observed. Substitution of some Zr by Er atoms in the monoclinic zirconia lattice was directly observed by HAADF-STEM analysis. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1226 / 1231
页数：6
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