Formation of nanocrystalline BiFeO3 under hydrothermal conditions
- Авторы: Proskurina O.1,2, Tomkovich M.1, Bachina A.2, Sokolov V.1, Danilovich D.2, Panchuk V.3, Semenov V.3, Gusarov V.1
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Учреждения:
- Ioffe Institute
- St. Petersburg State Institute of Technology (Technical University)
- St. Petersburg State University
- Выпуск: Том 87, № 11 (2017)
- Страницы: 2507-2515
- Раздел: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/221543
- DOI: https://doi.org/10.1134/S1070363217110019
- ID: 221543
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Аннотация
The formation of bismuth orthoferrite under hydrothermal conditions at temperature 160, 180, or 200°С and pressure 100 MPa in aqueous solution of potassium hydroxide has been studied. The determined composition and structure of polycrystalline phase with sillenite structure have evidenced its formation at the interface of the crystallites of amorphous iron oxide. It has been shown that the formation of polycrystalline round-shaped BiFeO3 particles with size about 20 μm occurs via aggregation of perovskite-type phase crystallites (38–70 nm). Pycnometric density of BiFeO3 and the amorphous phase has been determined, and Mossbauer spectra reflecting the state of iron in the phases coexisting during the formation of BiFeO3 have been analyzed.
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Об авторах
O. Proskurina
Ioffe Institute; St. Petersburg State Institute of Technology (Technical University)
Автор, ответственный за переписку.
Email: proskurinaov@mail.ru
Россия, ul. Politekhnicheskaya 26, St. Petersburg, 194021; St. Petersburg
M. Tomkovich
Ioffe Institute
Email: proskurinaov@mail.ru
Россия, ul. Politekhnicheskaya 26, St. Petersburg, 194021
A. Bachina
St. Petersburg State Institute of Technology (Technical University)
Email: proskurinaov@mail.ru
Россия, St. Petersburg
V. Sokolov
Ioffe Institute
Email: proskurinaov@mail.ru
Россия, ul. Politekhnicheskaya 26, St. Petersburg, 194021
D. Danilovich
St. Petersburg State Institute of Technology (Technical University)
Email: proskurinaov@mail.ru
Россия, St. Petersburg
V. Panchuk
St. Petersburg State University
Email: proskurinaov@mail.ru
Россия, St. Petersburg
V. Semenov
St. Petersburg State University
Email: proskurinaov@mail.ru
Россия, St. Petersburg
V. Gusarov
Ioffe Institute
Email: proskurinaov@mail.ru
Россия, ul. Politekhnicheskaya 26, St. Petersburg, 194021