Awin, Eranezhuth Wasan

Link to this page

Authority KeyName Variants
3abea631-9ccb-493b-8d9f-9d71828809d6
  • Awin, Eranezhuth Wasan (4)
Projects
No records found.

Author's Bibliography

Combustion synthesis of luminescent Eu-doped single phase Mayenite

Kumaresh, T.; Awin, Eranezhuth Wasan; Bhaskar, Lalith Kumar; Prekajski-Đorđević, Marija D.; Matović, Branko; Kumar, Ravi

(2021)

TY  - JOUR
AU  - Kumaresh, T.
AU  - Awin, Eranezhuth Wasan
AU  - Bhaskar, Lalith Kumar
AU  - Prekajski-Đorđević, Marija D.
AU  - Matović, Branko
AU  - Kumar, Ravi
PY  - 2021
UR  - https://www.sciencedirect.com/science/article/pii/S0022459621004655
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9886
AB  - Rare earth luminescent materials based on alkali metal oxides such as calcium aluminates have grabbed the attention due to their high luminescent efficiency, non-toxic and eco-friendly nature. Calcium aluminates as host materials for luminescent applications are extremely stable, suppressing the release of non-radiative energy resulting in the characteristic emission of rare earth luminescent centre. Moreover, calcium aluminates are inexpensive for their use as host material for luminescent applications. With texture and color giving the aesthetic contribution, Europium (Eu) doped single phase Mayenite may find potential applications in the design of energy efficient buildings when used as a coating material. Eu doped single phase Mayenite powders in varying concentrations (0%, 0.5%, 1%, and 1.5%) were prepared using self-propagating combustion synthesis method using metal nitrates and glycine as the fuel. The X-ray diffractograms confirmed the formation of single phase Mayenite with some of the Ca2+ ions getting replaced by Eu3+ ions. The photoluminescence emission spectra revealed 5D0 → 7F2 transition due to the crystal field effect and was characterized by the bright red luminescence. The doping of Eu resulted in a decrease of band gap from 4.8 ​eV for undoped Mayenite to 3.5 ​eV for 1.5% Eu doped Mayenite. The samples were found to exhibit excellent fluorescent properties under UV irradiation.
T2  - Journal of Solid State Chemistry
T2  - Journal of Solid State ChemistryJournal of Solid State Chemistry
T1  - Combustion synthesis of luminescent Eu-doped single phase Mayenite
VL  - 302
SP  - 122420
DO  - 10.1016/j.jssc.2021.122420
ER  - 
@article{
author = "Kumaresh, T. and Awin, Eranezhuth Wasan and Bhaskar, Lalith Kumar and Prekajski-Đorđević, Marija D. and Matović, Branko and Kumar, Ravi",
year = "2021",
abstract = "Rare earth luminescent materials based on alkali metal oxides such as calcium aluminates have grabbed the attention due to their high luminescent efficiency, non-toxic and eco-friendly nature. Calcium aluminates as host materials for luminescent applications are extremely stable, suppressing the release of non-radiative energy resulting in the characteristic emission of rare earth luminescent centre. Moreover, calcium aluminates are inexpensive for their use as host material for luminescent applications. With texture and color giving the aesthetic contribution, Europium (Eu) doped single phase Mayenite may find potential applications in the design of energy efficient buildings when used as a coating material. Eu doped single phase Mayenite powders in varying concentrations (0%, 0.5%, 1%, and 1.5%) were prepared using self-propagating combustion synthesis method using metal nitrates and glycine as the fuel. The X-ray diffractograms confirmed the formation of single phase Mayenite with some of the Ca2+ ions getting replaced by Eu3+ ions. The photoluminescence emission spectra revealed 5D0 → 7F2 transition due to the crystal field effect and was characterized by the bright red luminescence. The doping of Eu resulted in a decrease of band gap from 4.8 ​eV for undoped Mayenite to 3.5 ​eV for 1.5% Eu doped Mayenite. The samples were found to exhibit excellent fluorescent properties under UV irradiation.",
journal = "Journal of Solid State Chemistry, Journal of Solid State ChemistryJournal of Solid State Chemistry",
title = "Combustion synthesis of luminescent Eu-doped single phase Mayenite",
volume = "302",
pages = "122420",
doi = "10.1016/j.jssc.2021.122420"
}
Kumaresh, T., Awin, E. W., Bhaskar, L. K., Prekajski-Đorđević, M. D., Matović, B.,& Kumar, R.. (2021). Combustion synthesis of luminescent Eu-doped single phase Mayenite. in Journal of Solid State Chemistry, 302, 122420.
https://doi.org/10.1016/j.jssc.2021.122420
Kumaresh T, Awin EW, Bhaskar LK, Prekajski-Đorđević MD, Matović B, Kumar R. Combustion synthesis of luminescent Eu-doped single phase Mayenite. in Journal of Solid State Chemistry. 2021;302:122420.
doi:10.1016/j.jssc.2021.122420 .
Kumaresh, T., Awin, Eranezhuth Wasan, Bhaskar, Lalith Kumar, Prekajski-Đorđević, Marija D., Matović, Branko, Kumar, Ravi, "Combustion synthesis of luminescent Eu-doped single phase Mayenite" in Journal of Solid State Chemistry, 302 (2021):122420,
https://doi.org/10.1016/j.jssc.2021.122420 . .
6
6

Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)

Johnson, Teslin; Awin, Eranezhuth Wasan; Prekajski-Đorđević, Marija D.; Matović, Branko; Kumar, Ravi

(2020)

TY  - JOUR
AU  - Johnson, Teslin
AU  - Awin, Eranezhuth Wasan
AU  - Prekajski-Đorđević, Marija D.
AU  - Matović, Branko
AU  - Kumar, Ravi
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9936
AB  - Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)
VL  - 1
IS  - 1
SP  - 7
EP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9936
ER  - 
@article{
author = "Johnson, Teslin and Awin, Eranezhuth Wasan and Prekajski-Đorđević, Marija D. and Matović, Branko and Kumar, Ravi",
year = "2020",
abstract = "Mayenite (Ca12Al14O33) samples have been synthesized in ambient air, argon, and nitrogen atmospheres to vary the defect chemistry and to investigate its role in thermal conductivity. Highly dense sintered pellets (SEM) were obtained through spark plasma sintering and the X-ray diffractograms revealed predominantly mayenite phase with the presence of a minor amount of secondary phases. Thermal conductivity was measured for the sintered samples and it was observed that mayenite synthesized in nitrogen atmosphere exhibited a colossal value of 579 Wm-1K-1 at room temperature close to that of cubic-BN, comparable with that of metals.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)",
volume = "1",
number = "1",
pages = "7-11",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9936"
}
Johnson, T., Awin, E. W., Prekajski-Đorđević, M. D., Matović, B.,& Kumar, R.. (2020). Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33). in Journal of Innovative Materials in Extreme Conditions, 1(1), 7-11.
https://hdl.handle.net/21.15107/rcub_vinar_9936
Johnson T, Awin EW, Prekajski-Đorđević MD, Matović B, Kumar R. Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33). in Journal of Innovative Materials in Extreme Conditions. 2020;1(1):7-11.
https://hdl.handle.net/21.15107/rcub_vinar_9936 .
Johnson, Teslin, Awin, Eranezhuth Wasan, Prekajski-Đorđević, Marija D., Matović, Branko, Kumar, Ravi, "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33)" in Journal of Innovative Materials in Extreme Conditions, 1, no. 1 (2020):7-11,
https://hdl.handle.net/21.15107/rcub_vinar_9936 .

Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information

Johnson, Teslin; Awin, Eranezhuth Wasan; Prekajski-Đorđević, Marija D.; Matović, Branko; Kumar, Ravi

(2020)

TY  - DATA
AU  - Johnson, Teslin
AU  - Awin, Eranezhuth Wasan
AU  - Prekajski-Đorđević, Marija D.
AU  - Matović, Branko
AU  - Kumar, Ravi
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9937
AB  - Supporting information of the article Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33).
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information
VL  - 1
IS  - 1
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9937
ER  - 
@misc{
author = "Johnson, Teslin and Awin, Eranezhuth Wasan and Prekajski-Đorđević, Marija D. and Matović, Branko and Kumar, Ravi",
year = "2020",
abstract = "Supporting information of the article Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33).",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information",
volume = "1",
number = "1",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9937"
}
Johnson, T., Awin, E. W., Prekajski-Đorđević, M. D., Matović, B.,& Kumar, R.. (2020). Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information. in Journal of Innovative Materials in Extreme Conditions, 1(1).
https://hdl.handle.net/21.15107/rcub_vinar_9937
Johnson T, Awin EW, Prekajski-Đorđević MD, Matović B, Kumar R. Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information. in Journal of Innovative Materials in Extreme Conditions. 2020;1(1).
https://hdl.handle.net/21.15107/rcub_vinar_9937 .
Johnson, Teslin, Awin, Eranezhuth Wasan, Prekajski-Đorđević, Marija D., Matović, Branko, Kumar, Ravi, "Metal-Like Thermal Conductivity Possessed By Atmosphere Assisted Synthesis Of Spark Plasma Sintered Mayenite (Ca12Al14O33): Supporting Information" in Journal of Innovative Materials in Extreme Conditions, 1, no. 1 (2020),
https://hdl.handle.net/21.15107/rcub_vinar_9937 .

Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5)

Awin, Eranezhuth Wasan; Matović, Branko; Maletaškić, Jelena; Urbanovich, Vladimir; Kumar, Ravi

(2016)

TY  - JOUR
AU  - Awin, Eranezhuth Wasan
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Urbanovich, Vladimir
AU  - Kumar, Ravi
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1412
AB  - The investigation of nano-mechanical properties of sphene sintered under ultra-high pressures in the order of 4 GPa is done using indentation techniques. An indentation hardness of 6.6 GPa and reduced elastic modulus of 112.3 GPa is reported at maximum load of 7 mN. The material exhibits a high elastic recovery (similar to 59.1%) and the nature of deformation mechanism has been comprehended from the plastic work ratio. In addition, the fracture toughness of the material is also evaluated using indentation crack length method.
T2  - Processing and Application of Ceramics
T1  - Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5)
VL  - 10
IS  - 4
SP  - 295
EP  - 298
DO  - 10.2298/PAC1604295A
ER  - 
@article{
author = "Awin, Eranezhuth Wasan and Matović, Branko and Maletaškić, Jelena and Urbanovich, Vladimir and Kumar, Ravi",
year = "2016",
abstract = "The investigation of nano-mechanical properties of sphene sintered under ultra-high pressures in the order of 4 GPa is done using indentation techniques. An indentation hardness of 6.6 GPa and reduced elastic modulus of 112.3 GPa is reported at maximum load of 7 mN. The material exhibits a high elastic recovery (similar to 59.1%) and the nature of deformation mechanism has been comprehended from the plastic work ratio. In addition, the fracture toughness of the material is also evaluated using indentation crack length method.",
journal = "Processing and Application of Ceramics",
title = "Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5)",
volume = "10",
number = "4",
pages = "295-298",
doi = "10.2298/PAC1604295A"
}
Awin, E. W., Matović, B., Maletaškić, J., Urbanovich, V.,& Kumar, R.. (2016). Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5). in Processing and Application of Ceramics, 10(4), 295-298.
https://doi.org/10.2298/PAC1604295A
Awin EW, Matović B, Maletaškić J, Urbanovich V, Kumar R. Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5). in Processing and Application of Ceramics. 2016;10(4):295-298.
doi:10.2298/PAC1604295A .
Awin, Eranezhuth Wasan, Matović, Branko, Maletaškić, Jelena, Urbanovich, Vladimir, Kumar, Ravi, "Mechanical properties of ultra-high pressure sintered sphene (CaTiSiO5)" in Processing and Application of Ceramics, 10, no. 4 (2016):295-298,
https://doi.org/10.2298/PAC1604295A . .
1
1