Heavily doped high-entropy A2B2O7 pyrochlore
Аутори
Matović, BrankoMaletaškić, Jelena
Maksimović, Vesna
Zagorac, Jelena
Luković, Aleksa
Zeng, Yu-Ping
Cvijović-Alagić, Ivana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
high-entropy oxide / pyrochlore / phase evolution / XRD / microstructure / hardnessИзвор:
Processing and Application of Ceramics, 2023, 17, 2, 113-117Финансирање / 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)
- Visiting Professor Program of the Chinese Academy of Sciences [2021VEA0003]
Институција/група
VinčaTY - 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 . .