Anisotropic Broadening of Diffraction Peaks of Metallic Cobalt: Determining Parameters of a Nanoheterogeneous Domain Structure | Sciact - CRIS-система Института катализа

Anisotropic Broadening of Diffraction Peaks of Metallic Cobalt: Determining Parameters of a Nanoheterogeneous Domain Structure Научная публикация

Журнал

Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779

Вых. Данные

Год: 2025, Том: 66, Номер: 1, Страницы: 108-119 Страниц : 12 DOI: 10.1134/S002247662501010X

Ключевые слова

powder X-ray diffraction, nanoparticles, cobalt, planar defects, 1D disorder, domain structure, fcc–hcp intergrowth, modeling

Авторы

Cherepanova S.V. ¹ , Yatsenko D.A. ¹ , Gerasimov E.Y. ¹

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Информация о финансировании (1)

Российский научный фонд
Правительство Новосибирской области

23-23-10086

The disordered structure of metallic cobalt nanoparticles prepared by the in situ Co3O4 and Co2.95Al0.05O4 reduction at different temperatures is characterized. According to the transmission electron microscopy data, individual particles have a stripe contrast indicating that they consist of plate-like domains with different structures. The main feature of the recorded XRD patterns is the anisotropic peak broadening. The Rietveld analysis shows that the model represented by homogeneous particles with hcp and/or fcc structures does not agree well with the experiment. The XRD patterns calculated using statistical models of 1D disordered crystals show that metallic cobalt particles are heterogeneous and consist of plate-like domains with hcp and fcc structures. The dependences of diffraction peak parameters on the thickness of two types of domains are determined; the corresponding calibration graphs are constructed. The phase composition and domain structure parameters are determined as functions of temperature for two series of metallic particles.

Cherepanova S.V. , Yatsenko D.A. , Gerasimov E.Y.
Anisotropic Broadening of Diffraction Peaks of Metallic Cobalt: Determining Parameters of a Nanoheterogeneous Domain Structure
Journal of Structural Chemistry. 2025. V.66. N1. P.108-119. DOI: 10.1134/S002247662501010X WOS CAPlus

Черепанова С.В. , Яценко Д.А. , Герасимов Е.Ю.
Анизотропное уширение дифракционных пиков металлического кобальта: определение параметров наногетерогенной доменной структуры
Журнал структурной химии. 2025. Т.66. №1. 139017 :1-12. DOI: 10.26902/JSC_id139017 РИНЦ OpenAlex

Поступила в редакцию:	30 авг. 2024 г.
Принята к публикации:	13 окт. 2024 г.
Опубликована в печати:	1 янв. 2025 г.
Опубликована online:	12 февр. 2025 г.

Web of science:	WOS:001421218700005
Chemical Abstracts:	2025:385942

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