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ЖУРНАЛЫ // Наносистемы: физика, химия, математика // Архив

Наносистемы: физика, химия, математика, 2017, том 8, выпуск 5, страницы 647–653 (Mi nano87)

Эта публикация цитируется в 8 статьях

CHEMISTRY AND MATERIAL SCIENCE

Peculiarities of LaFeO$_3$ nanocrystals formation via glycine-nitrate combustion

A. Bachinaab, V. A. Ivanova, V. I. Popkovab

a Saint Petersburg State Technological Institute (Technical University), Moskovskiy 26, St. Petersburg, 190013, Russia
b Ioffe Institute, Russian Academy of Sciences, Politekhnicheskaya 26, St. Petersburg, 194021 Russia

Аннотация: Varying glycine to nitrate ratio in the initial solution the powders based on nanocrystalline LaFeO$_3$ were synthesized by solution combustion synthesis. The powders were studied by X-ray diffractometry, scanning electron microscopy, adsorption analysis and helium pycnometry. The average crystallite size of the synthesized LaFeO$_3$ nanocrystals ranged from 18 $\pm$ 2 to 85 $\pm$ 9 nm, and the specific surface area of the nanopowders based on them ranged from 8 to 33 m2/g. Based on the results, the influence of redox composition of the reaction solution on the nature of the combustion processes, as well as the composition, structure and properties of LaFeO$_3$ nanocrystals were analyzed. Here, it was shown, that the nanopowders have specific microstructure in terms of monocrystalline nanoscale layers of lanthanum orthoferrite, therefore it is allowed to consider them as a promising base for catalytically and magnetically functional materials.

Ключевые слова: lanthanum orthoferrite, glycine-nitrate combustion, nanocrystals, formation mechanism, XRD, SEM.

PACS: 81.07.-b

Поступила в редакцию: 15.09.2017
Исправленный вариант: 09.10.2017

Язык публикации: английский

DOI: 10.17586/2220-8054-2017-8-5-647-653



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