najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2021-12-2-224-231najo-369Research ArticleNANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICSНАНОСИСТЕМЫ: ФИЗИКА, ХИМИЯ, МАТЕМАТИКАThe effect of co-precipitation temperature on the crystallite size and aggregation/agglomeration of GdFeO3 nanoparticlesВлияние температуры соосаждения на размер кристаллитов и агрегацию/агломерацию наночастиц GdFeO3PopkovV. I.PopkovV. I.

Saint Petersburg, 194021

Saint Petersburg, 194021

vadim.i.popkov@mail.ioffe.ruAlbadiY.AlbadiY.

Saint Petersburg, 190013; 

Homs, 77, Syrian Arab Republic

Saint Petersburg, 190013, 

Homs, 77, Syrian Arab Republic

Ioffe InstituteIoffe InstituteSaint Petersburg State Institute of Technology; Al-Baath UniversitySaint Petersburg State Institute of Technology; Al-Baath University202128072025122224231Copyright © Popkov V.I., Albadi Y., 20252025Popkov V.I., Albadi Y.Popkov V.I., Albadi Y.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/369

In this work, a series of GdFeO3 nanopowders was successfully synthesized via a reverse co-precipitation technique at different solution tem­peratures (0, 25 and 50 ◦ C) followed by thermal treatment. Co-precipitated hydroxides and heat treatment products were analyzed using EDXS, DTA-TGA, PXRD, ASA and LD methods. It was shown that the formation temperature of GdFeO3 nanoparticles varies in the range of 737.5­758.8 ◦C and total weight loss varies in the range of 23.6-26.4% depending on the temperature of initial solutions. The specific surface areas of nanopowders were found to be strongly dependent on the factor mentioned above and belong to 2.5-16.3 m2/g values interval. The hierarchical structure of the obtained nanopowders was established and the effect of co-precipitation temperature on the average crystallite (21.4-34.3 nm), aggregate (46.2-301.2 nm) and agglomerate (33.5-40.9 pm) sizes was discussed in detail.

В данной работе серия нанопорошков GdFeO3 была успешно синтезирована методом обратного соосаждения при различных температурах раствора (0, 25 и 50 °С) с последующей термической обработкой. Соосажденные гидроксиды и продукты термообработки анализировали методами РСМА, ДТА-ТГА, ПРД, АСА и ЛД. Показано, что температура образования наночастиц GdFeO3 колеблется в пределах 737.5–758.8 °С, а общая потеря массы колеблется в пределах 23.6–26.4 % в зависимости от температуры исходных растворов. Установлено, что удельная поверхность нанопорошков сильно зависит от упомянутого выше фактора и находится в интервале значений 2.5–16.3 м2/г. Установлена иерархическая структура полученных нанопорошков и подробно обсуждено влияние температуры соосаждения на средние размеры кристаллитов (21.4–34.3 нм), агрегатов (46.2–301.2 нм) и агломератов (33.5–40.9 мкм).

соосаждениеортоферрит гадолиниянаночастицыагрегацияагломерацияco-precipitationgadolinium orthoferritenanoparticlesaggregationagglomerationThe research was supported by the Russian Science Foundation (project No. 19-73-00286). The study was partially performed on equipment of the Engineering Center of Saint Petersburg State Institute of Technology. The authors acknowledge D.P. Danilovich (EDXS, DTA-TGA, LD) and M.I. Chebanenko (ASA) for their help with the physicochemical characterization of the samples.The research was supported by the Russian Science Foundation (project No. 19-73-00286). The study was partially performed on equipment of the Engineering Center of Saint Petersburg State Institute of Technology. The authors acknowledge D.P. Danilovich (EDXS, DTA-TGA, LD) and M.I. Chebanenko (ASA) for their help with the physicochemical characterization of the samples.ReferencesTretyakov Y.D. 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The authors declare that there are no conflicts of interest present.