Scanning-Transmission and Transmission Electron Microscopy techniques (STEM and TEM) have been applied to the characterization of nanostructured gadolinium oxides doped with europium synthesized by spray pyrolysis. The High Angle Annular Dark Field (HAADF) – Scanning Transmission Electron Microscopy (STEM) tools have been used to perform a tomographic study to identify morphological characteristics of nanostructured particles, and to differentiate them according to the heat treatments to which these have been subjected. With these techniques it has been possible to confirm the hollowness and porous nature of samples subjected to low temperature annealing (900 °C). Moreover, the beginning of the densification and sintering processes in samples subjected to thermal treatment at higher temperature (1100 °C) have been evaluated. Chemical analysis by electron energy loss spectroscopy (EELS) and X ray energy dispersive spectroscopy (EDS) carried out in STEM mode have allowed to confirm the h...igh uniformity and the expected chemical composition. The high resolution tools either allowed to confirm the presence of a cubic (Ia3 symmetry) and the monoclinic (c2/m symmetry) phases in the nanostructured particles.
Keywords:
nanostructure / electron microscopy (STEM, TEM) / tomography / electron energy loss spectroscopy (EELS) / spray pyrolysis
Source:
Advanced Powder Technology, 2013, 24, 5, 864-870
Publisher:
Elsevier
Funding / projects:
G.D. of Universities and Research, Madrid Regional Government, Spain, Advanced Structural Materials Program - ESTRUMAT (S2009/MAT-1585)
Interministerial Commission for Science and Technology (CICYT), Spain, Project MAT2010-19837-C06-05
TY - JOUR
AU - Gómez, Luz Stella
AU - Sourty, E.
AU - Freitag, B.
AU - Milošević, Olivera
AU - Rabanal, Maria Eugenia
PY - 2013
UR - https://dais.sanu.ac.rs/123456789/351
AB - Scanning-Transmission and Transmission Electron Microscopy techniques (STEM and TEM) have been applied to the characterization of nanostructured gadolinium oxides doped with europium synthesized by spray pyrolysis. The High Angle Annular Dark Field (HAADF) – Scanning Transmission Electron Microscopy (STEM) tools have been used to perform a tomographic study to identify morphological characteristics of nanostructured particles, and to differentiate them according to the heat treatments to which these have been subjected. With these techniques it has been possible to confirm the hollowness and porous nature of samples subjected to low temperature annealing (900 °C). Moreover, the beginning of the densification and sintering processes in samples subjected to thermal treatment at higher temperature (1100 °C) have been evaluated. Chemical analysis by electron energy loss spectroscopy (EELS) and X ray energy dispersive spectroscopy (EDS) carried out in STEM mode have allowed to confirm the high uniformity and the expected chemical composition. The high resolution tools either allowed to confirm the presence of a cubic (Ia3 symmetry) and the monoclinic (c2/m symmetry) phases in the nanostructured particles.
PB - Elsevier
T2 - Advanced Powder Technology
T1 - TEM-STEM study of europium doped gadolinium oxide nanoparticles synthesized by spray pyrolysis
SP - 864
EP - 870
VL - 24
IS - 5
DO - 10.1016/j.apt.2013.03.011
UR - https://hdl.handle.net/21.15107/rcub_dais_351
ER -
@article{
author = "Gómez, Luz Stella and Sourty, E. and Freitag, B. and Milošević, Olivera and Rabanal, Maria Eugenia",
year = "2013",
abstract = "Scanning-Transmission and Transmission Electron Microscopy techniques (STEM and TEM) have been applied to the characterization of nanostructured gadolinium oxides doped with europium synthesized by spray pyrolysis. The High Angle Annular Dark Field (HAADF) – Scanning Transmission Electron Microscopy (STEM) tools have been used to perform a tomographic study to identify morphological characteristics of nanostructured particles, and to differentiate them according to the heat treatments to which these have been subjected. With these techniques it has been possible to confirm the hollowness and porous nature of samples subjected to low temperature annealing (900 °C). Moreover, the beginning of the densification and sintering processes in samples subjected to thermal treatment at higher temperature (1100 °C) have been evaluated. Chemical analysis by electron energy loss spectroscopy (EELS) and X ray energy dispersive spectroscopy (EDS) carried out in STEM mode have allowed to confirm the high uniformity and the expected chemical composition. The high resolution tools either allowed to confirm the presence of a cubic (Ia3 symmetry) and the monoclinic (c2/m symmetry) phases in the nanostructured particles.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "TEM-STEM study of europium doped gadolinium oxide nanoparticles synthesized by spray pyrolysis",
pages = "864-870",
volume = "24",
number = "5",
doi = "10.1016/j.apt.2013.03.011",
url = "https://hdl.handle.net/21.15107/rcub_dais_351"
}
Gómez, L. S., Sourty, E., Freitag, B., Milošević, O.,& Rabanal, M. E.. (2013). TEM-STEM study of europium doped gadolinium oxide nanoparticles synthesized by spray pyrolysis. in Advanced Powder Technology
Elsevier., 24(5), 864-870.
https://doi.org/10.1016/j.apt.2013.03.011
https://hdl.handle.net/21.15107/rcub_dais_351
Gómez LS, Sourty E, Freitag B, Milošević O, Rabanal ME. TEM-STEM study of europium doped gadolinium oxide nanoparticles synthesized by spray pyrolysis. in Advanced Powder Technology. 2013;24(5):864-870.
doi:10.1016/j.apt.2013.03.011
https://hdl.handle.net/21.15107/rcub_dais_351 .
Gómez, Luz Stella, Sourty, E., Freitag, B., Milošević, Olivera, Rabanal, Maria Eugenia, "TEM-STEM study of europium doped gadolinium oxide nanoparticles synthesized by spray pyrolysis" in Advanced Powder Technology, 24, no. 5 (2013):864-870,
https://doi.org/10.1016/j.apt.2013.03.011 .,
https://hdl.handle.net/21.15107/rcub_dais_351 .
