TY  - JOUR
AU  - Rabanal, Maria Eugenia
AU  - Gómez, Luz Stella
AU  - Khalifa, A.
AU  - Torralba, Jose Manuel
AU  - Mančić, Lidija
AU  - Milošević, Olivera
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/15210
AB  - High purity europium-doped gadolinia (Gd2O3:Eu3+) have been prepared using spray pyrolysis technique yielding nanostructured non-agglomerated particles with spherical morphology. Comparative microstructural analysis was done for different europium concentrations. The particle homogeneity, crystallization and nanostructure development were analyzed using XRD, TEM-HRTEM and EFTEM. The existence of two different cubic phases has been identified in as-prepared samples: a bcc (SG Ia3) and a fcc (Fm-3m). After the thermal treatment only the cubic Ia3 phase has been observed with the cell parameters affected with Eu3+ doping concentration and temperature, followed with progressive increase in crystallite size.
PB  - Elsevier BV
T2  - Journal of the European Ceramic Society
T1  - Structural properties of europia-doped-gadolinia synthesized through aerosol
SP  - 4325
EP  - 4328
VL  - 27
IS  - 13-15
DO  - 10.1016/j.jeurceramsoc.2007.02.151
UR  - https://hdl.handle.net/21.15107/rcub_dais_15210
ER  - 

@article{
author = "Rabanal, Maria Eugenia and Gómez, Luz Stella and Khalifa, A. and Torralba, Jose Manuel and Mančić, Lidija and Milošević, Olivera",
year = "2007",
abstract = "High purity europium-doped gadolinia (Gd2O3:Eu3+) have been prepared using spray pyrolysis technique yielding nanostructured non-agglomerated particles with spherical morphology. Comparative microstructural analysis was done for different europium concentrations. The particle homogeneity, crystallization and nanostructure development were analyzed using XRD, TEM-HRTEM and EFTEM. The existence of two different cubic phases has been identified in as-prepared samples: a bcc (SG Ia3) and a fcc (Fm-3m). After the thermal treatment only the cubic Ia3 phase has been observed with the cell parameters affected with Eu3+ doping concentration and temperature, followed with progressive increase in crystallite size.",
publisher = "Elsevier BV",
journal = "Journal of the European Ceramic Society",
title = "Structural properties of europia-doped-gadolinia synthesized through aerosol",
pages = "4325-4328",
volume = "27",
number = "13-15",
doi = "10.1016/j.jeurceramsoc.2007.02.151",
url = "https://hdl.handle.net/21.15107/rcub_dais_15210"
}

Rabanal, M. E., Gómez, L. S., Khalifa, A., Torralba, J. M., Mančić, L.,& Milošević, O.. (2007). Structural properties of europia-doped-gadolinia synthesized through aerosol. in Journal of the European Ceramic Society
Elsevier BV., 27(13-15), 4325-4328.
https://doi.org/10.1016/j.jeurceramsoc.2007.02.151
https://hdl.handle.net/21.15107/rcub_dais_15210

Rabanal ME, Gómez LS, Khalifa A, Torralba JM, Mančić L, Milošević O. Structural properties of europia-doped-gadolinia synthesized through aerosol. in Journal of the European Ceramic Society. 2007;27(13-15):4325-4328.
doi:10.1016/j.jeurceramsoc.2007.02.151
https://hdl.handle.net/21.15107/rcub_dais_15210 .

Rabanal, Maria Eugenia, Gómez, Luz Stella, Khalifa, A., Torralba, Jose Manuel, Mančić, Lidija, Milošević, Olivera, "Structural properties of europia-doped-gadolinia synthesized through aerosol" in Journal of the European Ceramic Society, 27, no. 13-15 (2007):4325-4328,
https://doi.org/10.1016/j.jeurceramsoc.2007.02.151 .,
https://hdl.handle.net/21.15107/rcub_dais_15210 .

TY  - CONF
AU  - Rabanal, Maria Eugenia
AU  - Gómez, Luz Stella
AU  - Khalifa, A.
AU  - Mančić, Lidija
AU  - Milošević, Olivera
AU  - Torralba, José Manuel
PY  - 2007
UR  - https://www.scientific.net/MSF.534-536.1393
UR  - https://dais.sanu.ac.rs/123456789/15268
AB  - In this paper, the influence of the Eu3+ center concentration on the structural and morphological properties of the Gd2O3 system obtained by Spray Pyrolysis have been studied. The processing route includes aerosol formation by means of ultrasonic device (resonant frequency ranging of 2.1MHz) from common gadolinium and europium nitrate solutions and control over the process of the aerosol decomposition in a medium-temperature (700°C). During the process, spherical, solid, agglomerate-free, submicronic particles with a mean particle size below 800nm and with the crystallite sizes below 20nm were obtained. In order to control the particles crystal structure and to establish the conditions for the stabilization of the low-temperature gadolinia cubic phase, the process parameters like temperature distribution, gas flow rate and annealing temperatures were adopted. The nanoparticle morphology, crystalline and chemical structure were studied by XRD, SEM and EDS. TEM has been applied in order to characterize this system. The low magnification bright field images permit to identify the structure and the growth "small primary nanoparticles" through the collision/coalescence mechanisms. HRTEM permits to determine the presence of domains locally affected by "Moires Frames" and "Crystallite Size". The selected electron diffraction patterns area allow determining the presence of a polycrystalline material with two phases in the "as-prepared" samples, and only a Ia3 phase along the thermal treatment. The obtained results and the mechanisms of ultrafine phosphor particles generation were discussed in terms of precursor chemistry, process parameters and structural characteristic.
PB  - Zurich : Trans Tech Publications
C3  - Progress n Powder Metallurgy
T1  - Gd2O3:Eu System: Structural Study of the Influence of Luminescence Center Concentration
SP  - 1393
EP  - 1396
DO  - 10.4028/www.scientific.net/MSF.534-536.1393
UR  - https://hdl.handle.net/21.15107/rcub_dais_15268
ER  - 

@conference{
author = "Rabanal, Maria Eugenia and Gómez, Luz Stella and Khalifa, A. and Mančić, Lidija and Milošević, Olivera and Torralba, José Manuel",
year = "2007",
abstract = "In this paper, the influence of the Eu3+ center concentration on the structural and morphological properties of the Gd2O3 system obtained by Spray Pyrolysis have been studied. The processing route includes aerosol formation by means of ultrasonic device (resonant frequency ranging of 2.1MHz) from common gadolinium and europium nitrate solutions and control over the process of the aerosol decomposition in a medium-temperature (700°C). During the process, spherical, solid, agglomerate-free, submicronic particles with a mean particle size below 800nm and with the crystallite sizes below 20nm were obtained. In order to control the particles crystal structure and to establish the conditions for the stabilization of the low-temperature gadolinia cubic phase, the process parameters like temperature distribution, gas flow rate and annealing temperatures were adopted. The nanoparticle morphology, crystalline and chemical structure were studied by XRD, SEM and EDS. TEM has been applied in order to characterize this system. The low magnification bright field images permit to identify the structure and the growth "small primary nanoparticles" through the collision/coalescence mechanisms. HRTEM permits to determine the presence of domains locally affected by "Moires Frames" and "Crystallite Size". The selected electron diffraction patterns area allow determining the presence of a polycrystalline material with two phases in the "as-prepared" samples, and only a Ia3 phase along the thermal treatment. The obtained results and the mechanisms of ultrafine phosphor particles generation were discussed in terms of precursor chemistry, process parameters and structural characteristic.",
publisher = "Zurich : Trans Tech Publications",
journal = "Progress n Powder Metallurgy",
title = "Gd2O3:Eu System: Structural Study of the Influence of Luminescence Center Concentration",
pages = "1393-1396",
doi = "10.4028/www.scientific.net/MSF.534-536.1393",
url = "https://hdl.handle.net/21.15107/rcub_dais_15268"
}

Rabanal, M. E., Gómez, L. S., Khalifa, A., Mančić, L., Milošević, O.,& Torralba, J. M.. (2007). Gd2O3:Eu System: Structural Study of the Influence of Luminescence Center Concentration. in Progress n Powder Metallurgy
Zurich : Trans Tech Publications., 1393-1396.
https://doi.org/10.4028/www.scientific.net/MSF.534-536.1393
https://hdl.handle.net/21.15107/rcub_dais_15268

Rabanal ME, Gómez LS, Khalifa A, Mančić L, Milošević O, Torralba JM. Gd2O3:Eu System: Structural Study of the Influence of Luminescence Center Concentration. in Progress n Powder Metallurgy. 2007;:1393-1396.
doi:10.4028/www.scientific.net/MSF.534-536.1393
https://hdl.handle.net/21.15107/rcub_dais_15268 .

Rabanal, Maria Eugenia, Gómez, Luz Stella, Khalifa, A., Mančić, Lidija, Milošević, Olivera, Torralba, José Manuel, "Gd2O3:Eu System: Structural Study of the Influence of Luminescence Center Concentration" in Progress n Powder Metallurgy (2007):1393-1396,
https://doi.org/10.4028/www.scientific.net/MSF.534-536.1393 .,
https://hdl.handle.net/21.15107/rcub_dais_15268 .