najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2023-14-1-120-126najo-202Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХInfluence of using different types of microreactors on the formation of nanocrystalline BiFeO3Влияние использования различных типов микрореакторов на формирование нанокристаллического BiFeO3https://orcid.org/0000-0002-2807-375XПроскуринаО. В.ProskurinaO. V.

Санкт-Петербург.

Olga V. Proskurina,

194021 St. Petersburg.

proskurinaov@mail.ruhttps://orcid.org/0000-0003-3571-5770АбиевР. Ш.AbievR. Sh.

Санкт-Петербург.

Rufat Sh. Abiev,

194021 St. Petersburg.

abiev.rufat@gmail.comhttps://orcid.org/0000-0002-7661-9155НеведомскийВ. Н.NevedomskiyV. N.

Санкт-Петербург.

Vladimir N. Nevedomskiy,

194021 St. Petersburg.

nevedom@mail.ioffe.ruIoffe Institute; St. Petersburg State Institute of TechnologyRussian FederationIoffe InstituteRussian Federation202305062025141120126Copyright © Proskurina O.V., Abiev R.S., Nevedomskiy V.N., 20252025Проскурина О.В., Абиев Р.Ш., Неведомский В.Н.Proskurina O.V., Abiev R.S., Nevedomskiy V.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/202

The influence of the coprecipitation of bismuth and iron hydroxides in microreactors of various types on the formation of nanocrystalline bismuth orthoferrite during the heat treatment of the deposit was described. Free impinging-jets microreactor, microreactor with submerged jets, microreactor with intensively swirling flows were used. It was revealed that nanocrystalline bismuth orthoferrite with the smallest weighted average crystallite size of 12 nm is formed when a microreactor with tangentially swirling flows of reagent solutions is used for coprecipitation of hydroxides. The minimum size of BiFeO3 crystallites according to transmission electron microscopy data is determined as 3–4 nm.

Определено влияние соосаждения гидроксидов висмута и железа в микрореакторах различных типов на формирование нанокристаллического ортоферрита висмута при термообработке осадка. Использованы микрореакторы со сталкивающимися струями, с затопленными струями и с закрученными потоками. Показано, что нанокристаллический ортоферрит висмута с наименьшим средневзвешенным размером кристаллитов – 12 нм, образуется при использовании для соосаждения гидроксидов микрореактора с тангенциально закрученными потоками растворов реагентов. Минимальный размер кристаллитов BiFeO3 по данным просвечивающей электронной микроскопии определен как 3-4 нм.

микрореактор со свободно сталкивающимися струямимикрореактор с затопленными струямимикрореактор с интенсивно закрученными потокаминанокристаллыферрит висмутаfree impinging-jets microreactormicroreactor with submerged jetsmicroreactor with intensively swirling flowsnanocrystalsbismuth ferriteX-ray diffraction studies were performed employing the equipment of the Engineering Center of the St. Petersburg State Institute of Technology. TEM characterization was performed using equipment owned by the Federal Joint Research Center “Material science and characterization in advanced technology”. The authors are grateful to V. V. Gusarov for his attention to the work. The research was supported by the Russian Science Foundation Grant 20-63-47016.ReferencesKushwaha A.K., John M., Misra M., Menezes P.L. Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications. Crystals, 2021, 11(11), P. 1317.Kushwaha A.K., John M., Misra M., Menezes P.L. 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The authors declare that there are no conflicts of interest present.