TY  - CONF
AU  - Prekajski Đorđević, Marija
AU  - Maletaškić, Jelena
AU  - Butulija, Svetlana
AU  - Nidžović, Emilija
AU  - Luković, Aleksa
AU  - Kumar, Ravi
AU  - Matović, Branko
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13168
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts
T1  - High-entropy stabilized Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ with fluorite structure
SP  - 74
EP  - 74
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13168
ER  - 

@conference{
author = "Prekajski Đorđević, Marija and Maletaškić, Jelena and Butulija, Svetlana and Nidžović, Emilija and Luković, Aleksa and Kumar, Ravi and Matović, Branko",
year = "2024",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts",
title = "High-entropy stabilized Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ with fluorite structure",
pages = "74-74",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13168"
}

Prekajski Đorđević, M., Maletaškić, J., Butulija, S., Nidžović, E., Luković, A., Kumar, R.,& Matović, B.. (2024). High-entropy stabilized Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ with fluorite structure. in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 74-74.
https://hdl.handle.net/21.15107/rcub_vinar_13168

Prekajski Đorđević M, Maletaškić J, Butulija S, Nidžović E, Luković A, Kumar R, Matović B. High-entropy stabilized Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ with fluorite structure. in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts. 2024;:74-74.
https://hdl.handle.net/21.15107/rcub_vinar_13168 .

Prekajski Đorđević, Marija, Maletaškić, Jelena, Butulija, Svetlana, Nidžović, Emilija, Luković, Aleksa, Kumar, Ravi, Matović, Branko, "High-entropy stabilized Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ with fluorite structure" in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts (2024):74-74,
https://hdl.handle.net/21.15107/rcub_vinar_13168 .

TY  - CONF
AU  - Luković, Aleksa
AU  - Diana Carolina Lago
AU  - Jozef Kraxner
AU  - Galusek, Dušan
AU  - Matović, Branko
AU  - Srećković-Batoćanin, Danica
AU  - Maletaškić, Jelena
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13169
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts
T1  - Basaltic Glass-Ceramic Composites: Exploring Structural, Morphological, and Thermal Insights for Ballistic Protection and Radiation Shielding Applications
SP  - 75
EP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13169
ER  - 

@conference{
author = "Luković, Aleksa and Diana Carolina Lago and Jozef Kraxner and Galusek, Dušan and Matović, Branko and Srećković-Batoćanin, Danica and Maletaškić, Jelena",
year = "2024",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts",
title = "Basaltic Glass-Ceramic Composites: Exploring Structural, Morphological, and Thermal Insights for Ballistic Protection and Radiation Shielding Applications",
pages = "75-75",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13169"
}

Luković, A., Diana Carolina Lago, Jozef Kraxner, Galusek, D., Matović, B., Srećković-Batoćanin, D.,& Maletaškić, J.. (2024). Basaltic Glass-Ceramic Composites: Exploring Structural, Morphological, and Thermal Insights for Ballistic Protection and Radiation Shielding Applications. in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 75-75.
https://hdl.handle.net/21.15107/rcub_vinar_13169

Luković A, Diana Carolina Lago, Jozef Kraxner, Galusek D, Matović B, Srećković-Batoćanin D, Maletaškić J. Basaltic Glass-Ceramic Composites: Exploring Structural, Morphological, and Thermal Insights for Ballistic Protection and Radiation Shielding Applications. in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts. 2024;:75-75.
https://hdl.handle.net/21.15107/rcub_vinar_13169 .

Luković, Aleksa, Diana Carolina Lago, Jozef Kraxner, Galusek, Dušan, Matović, Branko, Srećković-Batoćanin, Danica, Maletaškić, Jelena, "Basaltic Glass-Ceramic Composites: Exploring Structural, Morphological, and Thermal Insights for Ballistic Protection and Radiation Shielding Applications" in IMEC2024 - 2nd International Conference on Innovative Materials in Extreme Conditions : Book of abstracts (2024):75-75,
https://hdl.handle.net/21.15107/rcub_vinar_13169 .

TY  - CONF
AU  - Prekajski-Đorđević, Marija
AU  - Erčić, Jelena
AU  - Nidžović, Emilija
AU  - Luković, Aleksa
AU  - Kumar, Ravi
AU  - Matović, Branko
AU  - Maletaškić, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12298
AB  - Entropy-Stabilized Oxides are advanced ceramic materials that possess highly desirable functional properties. Through a five-component oxide formulation, these materials utilize configurational entropy to achieve phase stabilization. In this study we have successfully synthesized a novel type of high-entropy fluorite oxide, specifically Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ, through the Self Propagation Room Temperature reaction (SPRT) method. Through heat treatment experiments, it was observed that the phase composition of all samples remained a single phase after high-temperature heating. Furthermore, a thermal treatment at 1500°C resulted in a fully crystallised single-phase fluorite structure. The powders also demonstrated a lack of agglomeration, which allowed for the sintered specimen to exhibit sufficient densification with a small porosity that was uniformly distributed throughout the samples.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
T1  - Entropy-stabilized oxides owning fluorite structure: preparation and sintering
SP  - 85
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12298
ER  - 

@conference{
author = "Prekajski-Đorđević, Marija and Erčić, Jelena and Nidžović, Emilija and Luković, Aleksa and Kumar, Ravi and Matović, Branko and Maletaškić, Jelena",
year = "2023",
abstract = "Entropy-Stabilized Oxides are advanced ceramic materials that possess highly desirable functional properties. Through a five-component oxide formulation, these materials utilize configurational entropy to achieve phase stabilization. In this study we have successfully synthesized a novel type of high-entropy fluorite oxide, specifically Zr0.2Hf0.2Ce0.2Yb0.2Gd0.2O2-δ, through the Self Propagation Room Temperature reaction (SPRT) method. Through heat treatment experiments, it was observed that the phase composition of all samples remained a single phase after high-temperature heating. Furthermore, a thermal treatment at 1500°C resulted in a fully crystallised single-phase fluorite structure. The powders also demonstrated a lack of agglomeration, which allowed for the sintered specimen to exhibit sufficient densification with a small porosity that was uniformly distributed throughout the samples.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts",
title = "Entropy-stabilized oxides owning fluorite structure: preparation and sintering",
pages = "85-85",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12298"
}

Prekajski-Đorđević, M., Erčić, J., Nidžović, E., Luković, A., Kumar, R., Matović, B.,& Maletaškić, J.. (2023). Entropy-stabilized oxides owning fluorite structure: preparation and sintering. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 85-85.
https://hdl.handle.net/21.15107/rcub_vinar_12298

Prekajski-Đorđević M, Erčić J, Nidžović E, Luković A, Kumar R, Matović B, Maletaškić J. Entropy-stabilized oxides owning fluorite structure: preparation and sintering. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts. 2023;:85-85.
https://hdl.handle.net/21.15107/rcub_vinar_12298 .

Prekajski-Đorđević, Marija, Erčić, Jelena, Nidžović, Emilija, Luković, Aleksa, Kumar, Ravi, Matović, Branko, Maletaškić, Jelena, "Entropy-stabilized oxides owning fluorite structure: preparation and sintering" in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts (2023):85-85,
https://hdl.handle.net/21.15107/rcub_vinar_12298 .

TY  - CONF
AU  - Maletaškić, Jelena
AU  - Luković, Aleksa
AU  - Erčić, Jelena
AU  - Nidžović, Emilija
AU  - Prekajski-Đorđević, Marija
AU  - Matović, Branko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12360
AB  - Alumina composite was prepared via simple route. Alumina ceramics that resembels seashells are made of aligned micron-sized monocrystalline platelets joined together by silica secondary phase. SiO2 was added to improve mechanical properties of composite. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD) and thermal analyses. Effect of sintering temperature on mechanical properties, due to the increase of sintering temperature that can produce a higher strength and higher density, was also investigated. SEM observation of composite was also included. Ceramics composites such as this are good candidates for high temperature oxidation atmosphere applications, as they have excellent mechanical and other performance requirements.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
T1  - Synthesis and characterization of reinforced alumina composites
SP  - 115
EP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12360
ER  - 

@conference{
author = "Maletaškić, Jelena and Luković, Aleksa and Erčić, Jelena and Nidžović, Emilija and Prekajski-Đorđević, Marija and Matović, Branko",
year = "2023",
abstract = "Alumina composite was prepared via simple route. Alumina ceramics that resembels seashells are made of aligned micron-sized monocrystalline platelets joined together by silica secondary phase. SiO2 was added to improve mechanical properties of composite. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD) and thermal analyses. Effect of sintering temperature on mechanical properties, due to the increase of sintering temperature that can produce a higher strength and higher density, was also investigated. SEM observation of composite was also included. Ceramics composites such as this are good candidates for high temperature oxidation atmosphere applications, as they have excellent mechanical and other performance requirements.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts",
title = "Synthesis and characterization of reinforced alumina composites",
pages = "115-115",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12360"
}

Maletaškić, J., Luković, A., Erčić, J., Nidžović, E., Prekajski-Đorđević, M.,& Matović, B.. (2023). Synthesis and characterization of reinforced alumina composites. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 115-115.
https://hdl.handle.net/21.15107/rcub_vinar_12360

Maletaškić J, Luković A, Erčić J, Nidžović E, Prekajski-Đorđević M, Matović B. Synthesis and characterization of reinforced alumina composites. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts. 2023;:115-115.
https://hdl.handle.net/21.15107/rcub_vinar_12360 .

Maletaškić, Jelena, Luković, Aleksa, Erčić, Jelena, Nidžović, Emilija, Prekajski-Đorđević, Marija, Matović, Branko, "Synthesis and characterization of reinforced alumina composites" in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts (2023):115-115,
https://hdl.handle.net/21.15107/rcub_vinar_12360 .

TY  - CONF
AU  - Luković, Aleksa
AU  - Pavkov, Vladimir
AU  - Matović, Branko
AU  - Nidžović, Emilija
AU  - Prekajski-Đorđević, Marija
AU  - Maletaškić, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11626
AB  - Two series of glass-ceramic composites (basalt/mine tailings, basalt/basalt fibers) as well as one pure glass-ceramic were prepared from basalt rocks located in the SE part of Serbia (Lukovska Banja). Both composites contained 85, 90 and 95 wt.% basalt glass respectively. The basalt glass was obtained from initial melting of basalt at 1300 °C. In the present study, the crystallization process of basalt glass contained in the glass-ceramic composite, achieved by thermal treatment, was observed, and analyzed. The thermal treatment was done at 900 °C, 950 °C, 1000 °C and 1050 °C respectively, with the retention times of 1, 3, 6, 8 and 16 hours. It was found that the addition of mine tailings and basalt fibers caused a change in the density and microstructure. The study also showed that the best mechanical and structural characteristics of the examined glassceramics were attained at the temperature of 1050 °C, with the retention time of 1 hour. Additionally, structural and optical characteristics of the glass-ceramics were assessed.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Basalt-based glass-ceramic composites
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11626
ER  - 

@conference{
author = "Luković, Aleksa and Pavkov, Vladimir and Matović, Branko and Nidžović, Emilija and Prekajski-Đorđević, Marija and Maletaškić, Jelena",
year = "2023",
abstract = "Two series of glass-ceramic composites (basalt/mine tailings, basalt/basalt fibers) as well as one pure glass-ceramic were prepared from basalt rocks located in the SE part of Serbia (Lukovska Banja). Both composites contained 85, 90 and 95 wt.% basalt glass respectively. The basalt glass was obtained from initial melting of basalt at 1300 °C. In the present study, the crystallization process of basalt glass contained in the glass-ceramic composite, achieved by thermal treatment, was observed, and analyzed. The thermal treatment was done at 900 °C, 950 °C, 1000 °C and 1050 °C respectively, with the retention times of 1, 3, 6, 8 and 16 hours. It was found that the addition of mine tailings and basalt fibers caused a change in the density and microstructure. The study also showed that the best mechanical and structural characteristics of the examined glassceramics were attained at the temperature of 1050 °C, with the retention time of 1 hour. Additionally, structural and optical characteristics of the glass-ceramics were assessed.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Basalt-based glass-ceramic composites",
pages = "77",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11626"
}

Luković, A., Pavkov, V., Matović, B., Nidžović, E., Prekajski-Đorđević, M.,& Maletaškić, J.. (2023). Basalt-based glass-ceramic composites. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 77.
https://hdl.handle.net/21.15107/rcub_vinar_11626

Luković A, Pavkov V, Matović B, Nidžović E, Prekajski-Đorđević M, Maletaškić J. Basalt-based glass-ceramic composites. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:77.
https://hdl.handle.net/21.15107/rcub_vinar_11626 .

Luković, Aleksa, Pavkov, Vladimir, Matović, Branko, Nidžović, Emilija, Prekajski-Đorđević, Marija, Maletaškić, Jelena, "Basalt-based glass-ceramic composites" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):77,
https://hdl.handle.net/21.15107/rcub_vinar_11626 .

TY  - CONF
AU  - Nidžović, Emilija
AU  - Luković, Aleksa
AU  - Maletaškić, Jelena
AU  - Matović, Branko
AU  - Dapčević, Aleksandra
AU  - Prekajski-Đorđević, Marija D.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11741
AB  - High-entropy spinel oxides (HESOs) are oxides with 5 or more cations with the general formula AB2O4 and the spinel ( Fd 3m ) structure. Due to their unique structure and properties, HESOs have shown great potential in various technological applications, i.e. they can be used as catalysts, adsorbents and photocatalysts. Since the first successful synthesis in 2018, researchers have been experimenting with different precursors and synthesis methods. However, further research is still needed in order to fully understand their capabilities and exploit their properties. The aim of this research is to synthesize novel HESOs using the self-propagating room temperature (SPRT) method, which is time and cost-effective and has not been utilized so far. Our results indicate that chlorides are not good precursors, since the formation of spinel structure has not been achieved. On the other hand, the use of nitrates has successfully led to a primary spinel ( Fd 3m ) phase. Still, certain issues persist, as secondary phases are commonly formed, especially in the presence of Mg or Cu. A potential solution that could ensure the formation of a single phase is the use of quenching from high temperatures (1000 °C), instead of gradual cooling.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
C3  - CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
T1  - High-entropy spinel oxides: fundamentals, synthesis and characterization
SP  - 39
EP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11741
ER  - 

@conference{
author = "Nidžović, Emilija and Luković, Aleksa and Maletaškić, Jelena and Matović, Branko and Dapčević, Aleksandra and Prekajski-Đorđević, Marija D.",
year = "2023",
abstract = "High-entropy spinel oxides (HESOs) are oxides with 5 or more cations with the general formula AB2O4 and the spinel ( Fd 3m ) structure. Due to their unique structure and properties, HESOs have shown great potential in various technological applications, i.e. they can be used as catalysts, adsorbents and photocatalysts. Since the first successful synthesis in 2018, researchers have been experimenting with different precursors and synthesis methods. However, further research is still needed in order to fully understand their capabilities and exploit their properties. The aim of this research is to synthesize novel HESOs using the self-propagating room temperature (SPRT) method, which is time and cost-effective and has not been utilized so far. Our results indicate that chlorides are not good precursors, since the formation of spinel structure has not been achieved. On the other hand, the use of nitrates has successfully led to a primary spinel ( Fd 3m ) phase. Still, certain issues persist, as secondary phases are commonly formed, especially in the presence of Mg or Cu. A potential solution that could ensure the formation of a single phase is the use of quenching from high temperatures (1000 °C), instead of gradual cooling.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad",
title = "High-entropy spinel oxides: fundamentals, synthesis and characterization",
pages = "39-39",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11741"
}

Nidžović, E., Luković, A., Maletaškić, J., Matović, B., Dapčević, A.,& Prekajski-Đorđević, M. D.. (2023). High-entropy spinel oxides: fundamentals, synthesis and characterization. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
Novi Sad : Faculty of Technology, University of Novi Sad., 39-39.
https://hdl.handle.net/21.15107/rcub_vinar_11741

Nidžović E, Luković A, Maletaškić J, Matović B, Dapčević A, Prekajski-Đorđević MD. High-entropy spinel oxides: fundamentals, synthesis and characterization. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad. 2023;:39-39.
https://hdl.handle.net/21.15107/rcub_vinar_11741 .

Nidžović, Emilija, Luković, Aleksa, Maletaškić, Jelena, Matović, Branko, Dapčević, Aleksandra, Prekajski-Đorđević, Marija D., "High-entropy spinel oxides: fundamentals, synthesis and characterization" in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad (2023):39-39,
https://hdl.handle.net/21.15107/rcub_vinar_11741 .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Maksimović, Vesna
AU  - Zagorac, Jelena
AU  - Luković, Aleksa
AU  - Zeng, Yu-Ping
AU  - Cvijović-Alagić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11324
AB  - A novel class of high-entropy pyrochlore compounds with multiple elements at the A and B site positions (A2B2O7) was successfully obtained. Powders with (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 nominal composition were fabricated from pure metal oxides obtained through a reaction of metal nitrates (for site A) and metal chlorides (for site B) with sodium hydroxide during the solid-state displacement reaction (SSDR). The phase evolution was analyzed using XRD method. During the thermal treatment of ten individual metal oxides, the single pyrochlore phase was created. The present study showed that the highdensity (98%TD) ceramics with a hardness of 8.1GPa was successfully obtained after pressureless sintering at 1650 °C for 4 h. Results of the Raman study and the Rietveld structural refinement showed that sintered highentropy ceramics is characterized by a single-phase pyrochlore structure, which was investigated in detail.
T2  - Processing and Application of Ceramics
T1  - Heavily doped high-entropy A2B2O7 pyrochlore
VL  - 17
IS  - 2
SP  - 113
EP  - 117
DO  - 10.2298/PAC2302113M
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Maksimović, Vesna and Zagorac, Jelena and Luković, Aleksa and Zeng, Yu-Ping and Cvijović-Alagić, Ivana",
year = "2023",
abstract = "A novel class of high-entropy pyrochlore compounds with multiple elements at the A and B site positions (A2B2O7) was successfully obtained. Powders with (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 nominal composition were fabricated from pure metal oxides obtained through a reaction of metal nitrates (for site A) and metal chlorides (for site B) with sodium hydroxide during the solid-state displacement reaction (SSDR). The phase evolution was analyzed using XRD method. During the thermal treatment of ten individual metal oxides, the single pyrochlore phase was created. The present study showed that the highdensity (98%TD) ceramics with a hardness of 8.1GPa was successfully obtained after pressureless sintering at 1650 °C for 4 h. Results of the Raman study and the Rietveld structural refinement showed that sintered highentropy ceramics is characterized by a single-phase pyrochlore structure, which was investigated in detail.",
journal = "Processing and Application of Ceramics",
title = "Heavily doped high-entropy A2B2O7 pyrochlore",
volume = "17",
number = "2",
pages = "113-117",
doi = "10.2298/PAC2302113M"
}

Matović, B., Maletaškić, J., Maksimović, V., Zagorac, J., Luković, A., Zeng, Y.,& Cvijović-Alagić, I.. (2023). Heavily doped high-entropy A2B2O7 pyrochlore. in Processing and Application of Ceramics, 17(2), 113-117.
https://doi.org/10.2298/PAC2302113M

Matović B, Maletaškić J, Maksimović V, Zagorac J, Luković A, Zeng Y, Cvijović-Alagić I. Heavily doped high-entropy A2B2O7 pyrochlore. in Processing and Application of Ceramics. 2023;17(2):113-117.
doi:10.2298/PAC2302113M .

Matović, Branko, Maletaškić, Jelena, Maksimović, Vesna, Zagorac, Jelena, Luković, Aleksa, Zeng, Yu-Ping, Cvijović-Alagić, Ivana, "Heavily doped high-entropy A2B2O7 pyrochlore" in Processing and Application of Ceramics, 17, no. 2 (2023):113-117,
https://doi.org/10.2298/PAC2302113M . .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Maksimović, Vesna
AU  - Dimitrijević, Silvana
AU  - Todorović, Bratislav
AU  - Zagorac, Jelena
AU  - Luković, Aleksa
AU  - Zeng, Yu-Ping
AU  - Cvijović-Alagić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11350
AB  - Single nano high-entropy pyrochlore-type compound (A2B2O7) with 7 different
rare-earth cations at site A and 3 different metal cations at site B with equiatomic
amounts (7A1/7)2(3B1/3)2O7 is successfully obtained. The powder with nominal
composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 was fabricated by
reacting metal nitrates (site A) and metal chlorides (site B) with glycine during the
combustion reaction. The XRD analysis revealed that the powder attained during
synthesis is in an amorphous state. To induce crystallization of the obtained pyrochlore structure, the post-calcination process at 600-1500 °C was conducted and studied.
Results of this study showed that the monophase pyrochlore (A2B2O7) structure is
obtained during the calcination at 900 °C. The high-density ceramic pellet with 97% of
theoretical density and free of any additives was obtained through pressureless sintering
at 1650 °C for 4 h in the air using the powder calcined at 900 °C.
T2  - Science of Sintering
T1  - Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites
IS  - InPress
SP  - 23
DO  - 10.2298/SOS220802023M
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Maksimović, Vesna and Dimitrijević, Silvana and Todorović, Bratislav and Zagorac, Jelena and Luković, Aleksa and Zeng, Yu-Ping and Cvijović-Alagić, Ivana",
year = "2023",
abstract = "Single nano high-entropy pyrochlore-type compound (A2B2O7) with 7 different
rare-earth cations at site A and 3 different metal cations at site B with equiatomic
amounts (7A1/7)2(3B1/3)2O7 is successfully obtained. The powder with nominal
composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 was fabricated by
reacting metal nitrates (site A) and metal chlorides (site B) with glycine during the
combustion reaction. The XRD analysis revealed that the powder attained during
synthesis is in an amorphous state. To induce crystallization of the obtained pyrochlore structure, the post-calcination process at 600-1500 °C was conducted and studied.
Results of this study showed that the monophase pyrochlore (A2B2O7) structure is
obtained during the calcination at 900 °C. The high-density ceramic pellet with 97% of
theoretical density and free of any additives was obtained through pressureless sintering
at 1650 °C for 4 h in the air using the powder calcined at 900 °C.",
journal = "Science of Sintering",
title = "Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites",
number = "InPress",
pages = "23",
doi = "10.2298/SOS220802023M"
}

Matović, B., Maletaškić, J., Maksimović, V., Dimitrijević, S., Todorović, B., Zagorac, J., Luković, A., Zeng, Y.,& Cvijović-Alagić, I.. (2023). Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites. in Science of Sintering(InPress), 23.
https://doi.org/10.2298/SOS220802023M

Matović B, Maletaškić J, Maksimović V, Dimitrijević S, Todorović B, Zagorac J, Luković A, Zeng Y, Cvijović-Alagić I. Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites. in Science of Sintering. 2023;(InPress):23.
doi:10.2298/SOS220802023M .

Matović, Branko, Maletaškić, Jelena, Maksimović, Vesna, Dimitrijević, Silvana, Todorović, Bratislav, Zagorac, Jelena, Luković, Aleksa, Zeng, Yu-Ping, Cvijović-Alagić, Ivana, "Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites" in Science of Sintering, no. InPress (2023):23,
https://doi.org/10.2298/SOS220802023M . .

TY  - CONF
AU  - Stoiljković, Milovan
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Luković, Aleksa
AU  - Maksimović, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11563
AB  - In this work, the basalt deposits site from southern Serbia was used as a matrix for the composite materials. The corrosion behavior of basalt matrix composites with various ratios of commercial stainless steel 316L (5, 10, 15, and 20 wt.%) and bulk basalt produced by sintering in the air (t=1060ºC and τ=60 min) were studied by immersion corrosion technique. The samples were immersed in a solution of artificial acid rain H2SO4:HNO3 = 9:1 at ≈ pH 3 to measure the concentration of released metal ions using inductively coupled plasma-optical emission spectrometry (ICP-OES). The elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. The concentrations of the metal ions in the solution were studied over 15 weeks. The ions release rate from all the sintered samples was found to follow the Weibull cumulative distribution function (CDF). This means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The changes in the samples were monitored by light microscopy (LM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and weight loss. Sintered basalt shows high resistance to corrosion with a characteristic time of about 18 years for Fe and more than 25 years for Cr and Mn. The weight difference between the initial and after 15 weeks of exposure to the solution (sintered basalt) was not observed. On the other hand, the presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. When the steel powder content in the composite materials increases, the metal release rate does not change further, but a weight loss is observed. The characteristic times for Fe, Cr, Ni, and Mn in composite materials are about 5 years. These composite materials can be investigated as materials for using in an acid environment.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia (AMES)
C3  - MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
T1  - Corrosion of Ceramic-Metal Composites in Artificial Acid Rain
SP  - 73
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11563
ER  - 

@conference{
author = "Stoiljković, Milovan and Pavkov, Vladimir and Bakić, Gordana and Luković, Aleksa and Maksimović, Vesna",
year = "2023",
abstract = "In this work, the basalt deposits site from southern Serbia was used as a matrix for the composite materials. The corrosion behavior of basalt matrix composites with various ratios of commercial stainless steel 316L (5, 10, 15, and 20 wt.%) and bulk basalt produced by sintering in the air (t=1060ºC and τ=60 min) were studied by immersion corrosion technique. The samples were immersed in a solution of artificial acid rain H2SO4:HNO3 = 9:1 at ≈ pH 3 to measure the concentration of released metal ions using inductively coupled plasma-optical emission spectrometry (ICP-OES). The elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. The concentrations of the metal ions in the solution were studied over 15 weeks. The ions release rate from all the sintered samples was found to follow the Weibull cumulative distribution function (CDF). This means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The changes in the samples were monitored by light microscopy (LM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and weight loss. Sintered basalt shows high resistance to corrosion with a characteristic time of about 18 years for Fe and more than 25 years for Cr and Mn. The weight difference between the initial and after 15 weeks of exposure to the solution (sintered basalt) was not observed. On the other hand, the presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. When the steel powder content in the composite materials increases, the metal release rate does not change further, but a weight loss is observed. The characteristic times for Fe, Cr, Ni, and Mn in composite materials are about 5 years. These composite materials can be investigated as materials for using in an acid environment.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia (AMES)",
journal = "MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina",
title = "Corrosion of Ceramic-Metal Composites in Artificial Acid Rain",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11563"
}

Stoiljković, M., Pavkov, V., Bakić, G., Luković, A.,& Maksimović, V.. (2023). Corrosion of Ceramic-Metal Composites in Artificial Acid Rain. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
Belgrade : Association of Metallurgical Engineers of Serbia (AMES)., 73-73.
https://hdl.handle.net/21.15107/rcub_vinar_11563

Stoiljković M, Pavkov V, Bakić G, Luković A, Maksimović V. Corrosion of Ceramic-Metal Composites in Artificial Acid Rain. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina. 2023;:73-73.
https://hdl.handle.net/21.15107/rcub_vinar_11563 .

Stoiljković, Milovan, Pavkov, Vladimir, Bakić, Gordana, Luković, Aleksa, Maksimović, Vesna, "Corrosion of Ceramic-Metal Composites in Artificial Acid Rain" in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina (2023):73-73,
https://hdl.handle.net/21.15107/rcub_vinar_11563 .