Synthesis and characterization of high-entropy A2B2O7 pyrochlore with multiple elements at A and B sites
Аутори
Matović, BrankoMaletaškić, Jelena
Maksimović, Vesna
Dimitrijević, Silvana
Todorović, Bratislav
Zagorac, Jelena
Luković, Aleksa
Zeng, Yu-Ping
Cvijović-Alagić, Ivana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
High-entropy pyrochlore / Combustion reaction / Monophase structure / High-density ceramicИзвор:
Science of Sintering, 2023, InPress, 23-Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (RS-MESTD-inst-2020-200017)
Колекције
Институција/група
VinčaTY - 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 . .