Standard

Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition. / Lomakin, M.S.; Proskurina, O.V.; Levin, A.A.; Kozlov, S.S.; Semenov, V.G.; Kozlov, V.S.; Koroleva, А.; Zhizhin, E.V.; Shevaleevskiy, O.I.

в: Ceramics International, Том 51, № 25, 01.10.2025, стр. 43488-43510.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Lomakin, MS, Proskurina, OV, Levin, AA, Kozlov, SS, Semenov, VG, Kozlov, VS, Koroleva, А, Zhizhin, EV & Shevaleevskiy, OI 2025, 'Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition', Ceramics International, Том. 51, № 25, стр. 43488-43510. https://doi.org/10.1016/j.ceramint.2025.06.323

APA

Lomakin, M. S., Proskurina, O. V., Levin, A. A., Kozlov, S. S., Semenov, V. G., Kozlov, V. S., Koroleva, А., Zhizhin, E. V., & Shevaleevskiy, O. I. (2025). Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition. Ceramics International, 51(25), 43488-43510. https://doi.org/10.1016/j.ceramint.2025.06.323

Vancouver

Lomakin MS, Proskurina OV, Levin AA, Kozlov SS, Semenov VG, Kozlov VS и пр. Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition. Ceramics International. 2025 Окт. 1;51(25):43488-43510. https://doi.org/10.1016/j.ceramint.2025.06.323

Author

Lomakin, M.S. ; Proskurina, O.V. ; Levin, A.A. ; Kozlov, S.S. ; Semenov, V.G. ; Kozlov, V.S. ; Koroleva, А. ; Zhizhin, E.V. ; Shevaleevskiy, O.I. / Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition. в: Ceramics International. 2025 ; Том 51, № 25. стр. 43488-43510.

BibTeX

@article{084d9ad319494e559151e3897a55bf36,
title = "Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition",
abstract = "Semiconductor compounds with cubic pyrochlore structure A2B2O6O', obtained in a wide range of compositions in the Bi2O3–Na2O–Fe2O3–WO3system by the hydrothermal method (T = 200 °C, P ∼ 7 MPa, pH ∼ 5), were studied by powder XRD, EDX microanalysis, SEM, M{\"o}ssbauer spectroscopy, diffuse reflectance spectroscopy, X-ray and ultraviolet photoelectron spectroscopy techniques.It was shown that metal atoms are distributed over structurally non-equivalent positions as follows: (Bi, Na, □)2(Fe, W)2O6O'δ(□ are cation vacancies). The static displacements of atoms from the “ideal” Wyckoff positions (Bi3+cations (16d→96g) and oxygen anions (8b→32e)) were detected in the A2O' sublattice.The band gap value (Eg) for the indirect allowed electronic transitions, as well as the energetic position of valence band maximum (EVBM) and conduction band minimum (ECBM) relative to the vacuum level, do not depend on the chemical composition of the obtained pyrochlores within the error limits and amount to ∼2.1 eV, −5.9 eV, and −3.8 eV, respectively. {\textcopyright} 2025 Elsevier B.V., All rights reserved.",
keywords = "Crystal structure, Energy band diagram, Hydrothermal synthesis, Pyrochlore, Semiconductor, Band diagram, Boron compounds, Energy gap, Iron oxides, Mossbauer spectroscopy, Negative ions, Positive ions, Semiconducting bismuth compounds, Sodium compounds, Tungsten compounds, X ray photoelectron spectroscopy, Chemical compositions, Crystals structures, Cubic pyrochlore structure, EDX microanalysis, Energy-band diagram, Hydrothermal methods, Powder XRD, Pyrochlore phasis, Pyrochlores, Semiconductor compounds",
author = "M.S. Lomakin and O.V. Proskurina and A.A. Levin and S.S. Kozlov and V.G. Semenov and V.S. Kozlov and А. Koroleva and E.V. Zhizhin and O.I. Shevaleevskiy",
note = "Export Date: 01 November 2025; Cited By: 0; Correspondence Address: M.S. Lomakin; Ioffe Institute, St. Petersburg, 26, Politekhnicheskaya St., 194021, Russian Federation; email: lomakinmakariy@mail.ioffe.ru; CODEN: CINND",
year = "2025",
month = oct,
day = "1",
doi = "10.1016/j.ceramint.2025.06.323",
language = "Английский",
volume = "51",
pages = "43488--43510",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Elsevier",
number = "25",

}

RIS

TY - JOUR

T1 - Pyrochlore phase in the Bi2O3‒Na2O‒Fe2O3‒WO3‒(H2O) system: crystal structure and energy band diagram depending on chemical composition

AU - Lomakin, M.S.

AU - Proskurina, O.V.

AU - Levin, A.A.

AU - Kozlov, S.S.

AU - Semenov, V.G.

AU - Kozlov, V.S.

AU - Koroleva, А.

AU - Zhizhin, E.V.

AU - Shevaleevskiy, O.I.

N1 - Export Date: 01 November 2025; Cited By: 0; Correspondence Address: M.S. Lomakin; Ioffe Institute, St. Petersburg, 26, Politekhnicheskaya St., 194021, Russian Federation; email: lomakinmakariy@mail.ioffe.ru; CODEN: CINND

PY - 2025/10/1

Y1 - 2025/10/1

N2 - Semiconductor compounds with cubic pyrochlore structure A2B2O6O', obtained in a wide range of compositions in the Bi2O3–Na2O–Fe2O3–WO3system by the hydrothermal method (T = 200 °C, P ∼ 7 MPa, pH ∼ 5), were studied by powder XRD, EDX microanalysis, SEM, Mössbauer spectroscopy, diffuse reflectance spectroscopy, X-ray and ultraviolet photoelectron spectroscopy techniques.It was shown that metal atoms are distributed over structurally non-equivalent positions as follows: (Bi, Na, □)2(Fe, W)2O6O'δ(□ are cation vacancies). The static displacements of atoms from the “ideal” Wyckoff positions (Bi3+cations (16d→96g) and oxygen anions (8b→32e)) were detected in the A2O' sublattice.The band gap value (Eg) for the indirect allowed electronic transitions, as well as the energetic position of valence band maximum (EVBM) and conduction band minimum (ECBM) relative to the vacuum level, do not depend on the chemical composition of the obtained pyrochlores within the error limits and amount to ∼2.1 eV, −5.9 eV, and −3.8 eV, respectively. © 2025 Elsevier B.V., All rights reserved.

AB - Semiconductor compounds with cubic pyrochlore structure A2B2O6O', obtained in a wide range of compositions in the Bi2O3–Na2O–Fe2O3–WO3system by the hydrothermal method (T = 200 °C, P ∼ 7 MPa, pH ∼ 5), were studied by powder XRD, EDX microanalysis, SEM, Mössbauer spectroscopy, diffuse reflectance spectroscopy, X-ray and ultraviolet photoelectron spectroscopy techniques.It was shown that metal atoms are distributed over structurally non-equivalent positions as follows: (Bi, Na, □)2(Fe, W)2O6O'δ(□ are cation vacancies). The static displacements of atoms from the “ideal” Wyckoff positions (Bi3+cations (16d→96g) and oxygen anions (8b→32e)) were detected in the A2O' sublattice.The band gap value (Eg) for the indirect allowed electronic transitions, as well as the energetic position of valence band maximum (EVBM) and conduction band minimum (ECBM) relative to the vacuum level, do not depend on the chemical composition of the obtained pyrochlores within the error limits and amount to ∼2.1 eV, −5.9 eV, and −3.8 eV, respectively. © 2025 Elsevier B.V., All rights reserved.

KW - Crystal structure

KW - Energy band diagram

KW - Hydrothermal synthesis

KW - Pyrochlore

KW - Semiconductor

KW - Band diagram

KW - Boron compounds

KW - Energy gap

KW - Iron oxides

KW - Mossbauer spectroscopy

KW - Negative ions

KW - Positive ions

KW - Semiconducting bismuth compounds

KW - Sodium compounds

KW - Tungsten compounds

KW - X ray photoelectron spectroscopy

KW - Chemical compositions

KW - Crystals structures

KW - Cubic pyrochlore structure

KW - EDX microanalysis

KW - Energy-band diagram

KW - Hydrothermal methods

KW - Powder XRD

KW - Pyrochlore phasis

KW - Pyrochlores

KW - Semiconductor compounds

UR - https://www.mendeley.com/catalogue/3d46ec3c-f376-3af9-ae44-fa8949bb962d/

U2 - 10.1016/j.ceramint.2025.06.323

DO - 10.1016/j.ceramint.2025.06.323

M3 - статья

VL - 51

SP - 43488

EP - 43510

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 25

ER -

ID: 143728957