TY  - CONF
AU  - Nikolić, Marko G.
AU  - Vlašić, Ana
AU  - Rabasović, Mihailo
AU  - Murić, Branka
AU  - Čelebonović, Vladan
AU  - Stanković, Nadežda
AU  - Matović, Branko
AU  - Jelenković, Branislav
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10878
AB  - Rare earth ions (RE3+) are highly sensitive to local symmetry so changing the symmetry is reflected in their luminescence spectra. In this work we investigated the high pressure photoluminescence properties of cubic and monoclinic Y2O3, as well as, monoclinic Y2MoO6, doped either with Eu3+ or Sm3+ ions. Photoluminescence emission of cubic Y2O3 :Sm3+ and Y2O3 :Eu3+ phases were recorded up to the pressure of 20 GPa and 15 GPa, respectively. With varying pressure, the intensity ratio of 4G5/2 → 6H7/2 and 4F3/2 → 6H7/2 Sm3+ emission shows three distinct regions. Furthermore, the intensity ratio of 5D0 → 7F1 and 5D0 → 7F2 Eu3+ emission of the cubic matrix has similar pressure dependence as Sm3+ doped phase. A steep pressure dependence evident in the range of 9.2-13.1 GPa could be used for detecting a pressure induced cubic to monoclinic phase transition of Y2O3 matrix. It matches well the behavior of the pressure sensitive Sm3+ spectra in the range of 9.1-11.6 GPa, which is proven to appear due to a phase transition at ~ 11 GPa. The monoclinic Y2O3 :Eu3+ also has a pressure-sensitive intensity ratio of 5D0→7F1 and 5D0→7F2 emission lines. Measurements for the monoclinic Y2O3 :Eu3+ matrix were recorded up to 8 GPa. The dependence is unambiguous, without any phase transitions in the measured region. The nature and high sensitivity suggests that this dependence can be used as an efficient high pressure sensor. Photoluminescence emission measurements of Y2MoO6:Sm3+ and Y2MoO6:Eu3+ phases were recorded up to 12 and 11.5 GPa, respectivelly. Intensity ratio variation of 4G5/2→6H5/2 and 4G5/2→6H7/2 Sm3+ emission lines, as well as of 5D0 → 7F1 and 5D0 → 7F2 Eu3+ emission lines as a function of pressure can be also used for detection of the Y2MoO6 phase transition. The accomplished results demonstrate the properties of Y2MoO6:Sm3+ and Y2MoO6:Eu3+ inorganic phosphors, with emmision linear dependance of the intensity ratio on the pressure up to 8 GPa, could be used as an efficient high pressure sensor.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade
T1  - Detection of high pressure phase transitions in RE3+ doped Y2O3 and Y2MoO6 through luminescence measurements
SP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10878
ER  - 

@conference{
author = "Nikolić, Marko G. and Vlašić, Ana and Rabasović, Mihailo and Murić, Branka and Čelebonović, Vladan and Stanković, Nadežda and Matović, Branko and Jelenković, Branislav",
year = "2018",
abstract = "Rare earth ions (RE3+) are highly sensitive to local symmetry so changing the symmetry is reflected in their luminescence spectra. In this work we investigated the high pressure photoluminescence properties of cubic and monoclinic Y2O3, as well as, monoclinic Y2MoO6, doped either with Eu3+ or Sm3+ ions. Photoluminescence emission of cubic Y2O3 :Sm3+ and Y2O3 :Eu3+ phases were recorded up to the pressure of 20 GPa and 15 GPa, respectively. With varying pressure, the intensity ratio of 4G5/2 → 6H7/2 and 4F3/2 → 6H7/2 Sm3+ emission shows three distinct regions. Furthermore, the intensity ratio of 5D0 → 7F1 and 5D0 → 7F2 Eu3+ emission of the cubic matrix has similar pressure dependence as Sm3+ doped phase. A steep pressure dependence evident in the range of 9.2-13.1 GPa could be used for detecting a pressure induced cubic to monoclinic phase transition of Y2O3 matrix. It matches well the behavior of the pressure sensitive Sm3+ spectra in the range of 9.1-11.6 GPa, which is proven to appear due to a phase transition at ~ 11 GPa. The monoclinic Y2O3 :Eu3+ also has a pressure-sensitive intensity ratio of 5D0→7F1 and 5D0→7F2 emission lines. Measurements for the monoclinic Y2O3 :Eu3+ matrix were recorded up to 8 GPa. The dependence is unambiguous, without any phase transitions in the measured region. The nature and high sensitivity suggests that this dependence can be used as an efficient high pressure sensor. Photoluminescence emission measurements of Y2MoO6:Sm3+ and Y2MoO6:Eu3+ phases were recorded up to 12 and 11.5 GPa, respectivelly. Intensity ratio variation of 4G5/2→6H5/2 and 4G5/2→6H7/2 Sm3+ emission lines, as well as of 5D0 → 7F1 and 5D0 → 7F2 Eu3+ emission lines as a function of pressure can be also used for detection of the Y2MoO6 phase transition. The accomplished results demonstrate the properties of Y2MoO6:Sm3+ and Y2MoO6:Eu3+ inorganic phosphors, with emmision linear dependance of the intensity ratio on the pressure up to 8 GPa, could be used as an efficient high pressure sensor.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade",
title = "Detection of high pressure phase transitions in RE3+ doped Y2O3 and Y2MoO6 through luminescence measurements",
pages = "51",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10878"
}

Nikolić, M. G., Vlašić, A., Rabasović, M., Murić, B., Čelebonović, V., Stanković, N., Matović, B.,& Jelenković, B.. (2018). Detection of high pressure phase transitions in RE3+ doped Y2O3 and Y2MoO6 through luminescence measurements. in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade
Belgrade : Serbian Ceramic Society., 51.
https://hdl.handle.net/21.15107/rcub_vinar_10878

Nikolić MG, Vlašić A, Rabasović M, Murić B, Čelebonović V, Stanković N, Matović B, Jelenković B. Detection of high pressure phase transitions in RE3+ doped Y2O3 and Y2MoO6 through luminescence measurements. in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade. 2018;:51.
https://hdl.handle.net/21.15107/rcub_vinar_10878 .

Nikolić, Marko G., Vlašić, Ana, Rabasović, Mihailo, Murić, Branka, Čelebonović, Vladan, Stanković, Nadežda, Matović, Branko, Jelenković, Branislav, "Detection of high pressure phase transitions in RE3+ doped Y2O3 and Y2MoO6 through luminescence measurements" in Advanced Ceramics and Application : 7th Serbian Ceramic Society Conference : program and the book of abstracts; September 17-19, 2018; Belgrade (2018):51,
https://hdl.handle.net/21.15107/rcub_vinar_10878 .