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Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure. / Zhuk, Nadezhda; Badanina, Ksenia; Korolev, Roman; Makeev, Boris; Krzhizhanovskaya, Maria; Kharton, Vladislav.

In: Inorganics, Vol. 11, No. 7, 288, 03.07.2023.

Research output: Contribution to journal › Article › peer-review

Harvard

Zhuk, N, Badanina, K, Korolev, R, Makeev, B, Krzhizhanovskaya, M & Kharton, V 2023, 'Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure', Inorganics, vol. 11, no. 7, 288. https://doi.org/10.3390/inorganics11070288

APA

Zhuk, N., Badanina, K., Korolev, R., Makeev, B., Krzhizhanovskaya, M., & Kharton, V. (2023). Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure. Inorganics, 11(7), [288]. https://doi.org/10.3390/inorganics11070288

Vancouver

Zhuk N, Badanina K, Korolev R, Makeev B, Krzhizhanovskaya M, Kharton V. Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure. Inorganics. 2023 Jul 3;11(7). 288. https://doi.org/10.3390/inorganics11070288

Author

Zhuk, Nadezhda ; Badanina, Ksenia ; Korolev, Roman ; Makeev, Boris ; Krzhizhanovskaya, Maria ; Kharton, Vladislav. / Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure. In: Inorganics. 2023 ; Vol. 11, No. 7.

BibTeX

@article{8d81b394343c4540ab698f9612db2f42,
title = "Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure",
abstract = "The formation mechanisms of pyrochlore-type Bi2Co1/2Cr1/2Nb2O9+Δ (space group Fd-3m, a = 10.4838(8) {\AA}), in the temperature range from 400 to 1050 °C were studied by employing X-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy. An extensive reaction between the binary metal oxides was found to begin at temperatures above 550 °C, following the transition of monoclinic α-Bi2O3 into a tetragonal β-Bi2O3 polymorph. The synthesis process occurs in several stages when Bi-rich intermediate products (Bi6CrO12, Bi6Cr2O15, and Bi5Nb3O15) transform into bismuth-depleted BiNbO4 and a chromium–cobalt spinel is formed. The formation of a single pyrochlore phase occurs at the final reaction stage at 1050 °C via the doping of bismuth ortho-niobate, BiNbO4, by the transition metal cations. The observed mechanism is essentially similar to the mechanism of tantalate-based phases except for the formation of Bi5Nb3O15 at the intermediate reaction stages.",
author = "Nadezhda Zhuk and Ksenia Badanina and Roman Korolev and Boris Makeev and Maria Krzhizhanovskaya and Vladislav Kharton",
year = "2023",
month = jul,
day = "3",
doi = "10.3390/inorganics11070288",
language = "English",
volume = "11",
journal = "Inorganics",
issn = "2304-6740",
publisher = "MDPI AG",
number = "7",

}

RIS

TY - JOUR

T1 - Phase Formation of Co and Cr Co-Doped Bismuth Niobate with Pyrochlore Structure

AU - Zhuk, Nadezhda

AU - Badanina, Ksenia

AU - Korolev, Roman

AU - Makeev, Boris

AU - Krzhizhanovskaya, Maria

AU - Kharton, Vladislav

PY - 2023/7/3

Y1 - 2023/7/3

N2 - The formation mechanisms of pyrochlore-type Bi2Co1/2Cr1/2Nb2O9+Δ (space group Fd-3m, a = 10.4838(8) Å), in the temperature range from 400 to 1050 °C were studied by employing X-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy. An extensive reaction between the binary metal oxides was found to begin at temperatures above 550 °C, following the transition of monoclinic α-Bi2O3 into a tetragonal β-Bi2O3 polymorph. The synthesis process occurs in several stages when Bi-rich intermediate products (Bi6CrO12, Bi6Cr2O15, and Bi5Nb3O15) transform into bismuth-depleted BiNbO4 and a chromium–cobalt spinel is formed. The formation of a single pyrochlore phase occurs at the final reaction stage at 1050 °C via the doping of bismuth ortho-niobate, BiNbO4, by the transition metal cations. The observed mechanism is essentially similar to the mechanism of tantalate-based phases except for the formation of Bi5Nb3O15 at the intermediate reaction stages.

AB - The formation mechanisms of pyrochlore-type Bi2Co1/2Cr1/2Nb2O9+Δ (space group Fd-3m, a = 10.4838(8) Å), in the temperature range from 400 to 1050 °C were studied by employing X-ray diffraction, scanning electron microscopy and energy-dispersive spectroscopy. An extensive reaction between the binary metal oxides was found to begin at temperatures above 550 °C, following the transition of monoclinic α-Bi2O3 into a tetragonal β-Bi2O3 polymorph. The synthesis process occurs in several stages when Bi-rich intermediate products (Bi6CrO12, Bi6Cr2O15, and Bi5Nb3O15) transform into bismuth-depleted BiNbO4 and a chromium–cobalt spinel is formed. The formation of a single pyrochlore phase occurs at the final reaction stage at 1050 °C via the doping of bismuth ortho-niobate, BiNbO4, by the transition metal cations. The observed mechanism is essentially similar to the mechanism of tantalate-based phases except for the formation of Bi5Nb3O15 at the intermediate reaction stages.

UR - https://www.mendeley.com/catalogue/f4edf5c5-3422-3b92-a0fc-8a64c87fd0ba/

U2 - 10.3390/inorganics11070288

DO - 10.3390/inorganics11070288

M3 - Article

VL - 11

JO - Inorganics

JF - Inorganics

SN - 2304-6740

IS - 7

M1 - 288

ER -

ID: 111863032