Formation of Nickel Magnetic Nanoparticles and Modification of Nickel Phthalocyanine Matrix by Sodium Doping | Sciact - CRIS-система Института катализа

Formation of Nickel Magnetic Nanoparticles and Modification of Nickel Phthalocyanine Matrix by Sodium Doping Научная публикация

Журнал

Technical Physics
ISSN: 1063-7842 , E-ISSN: 1090-6525

Вых. Данные

Год: 2017, Том: 62, Номер: 10, Страницы: 1538-1544 Страниц : 7 DOI: 10.1134/s1063784217100152

Ключевые слова

silver nanoparticles; atomic structure; X-ray; temperature; scattering

Авторы

Kolpacheva N.A. ^1,4 , Avramenko M.V. ¹ , Avakyan L.A. ¹ , Zubavichus Ya.V. ² , Mirzakhanyan A.A. ³ , Manukyan A.S. ³ , Sharoyan E.G. ³ , Bugaev L.A. ¹

Организации

1	Sothern Federal University
2	National Scientific Center Kurchatov Institute
3	Institute of Physical Research, National Academy of Sciences of Armenia
4	Don State Technical University

Data for the vapor-phase doping (300°C) of nickel phthalocyanine (NiPc) by sodium taken in different concentrations (x), as well as structural analysis data for Nax = 0.2NiPc, Nax = 1NiPc, and Nax = 3NiPc samples, have been reported. The structure of the samples and their atomic configuration versus the doping level have been studied by transmission electron microscopy, Raman scattering, X-ray diffraction, X-ray absorption spectroscopy, and extended X-ray absorption fine structure (EXAFS) spectroscopy. The structural parameters of Ni–N, Ni–C, and Ni–Ni bonds have been determined, and it has been found that, at a low level of doping by sodium, local structural distortions are observed in some molecules of the NiPc matrix near nickel atoms. The fraction of these molecules grows as the doping level rises from x = 0.2 to x = 1.0. It has been shown that doping changes the oscillation mode of light atoms, which indicates a rise in the electron concentration on five- and six-membered rings. At a high level of sodium doping (x = 3.0), nickel nanoparticles with a mean size of 20 nm and molecule decomposition products have been observed in the NiPc matrix. It has been found that the fraction of nickel atoms in the Nax = 3NiPc nanoparticles as estimated from EXAFS data is sufficient for the room-temperature magnetic properties of the samples to persist for a long time.

Kolpacheva N.A. , Avramenko M.V. , Avakyan L.A. , Zubavichus Y.V. , Mirzakhanyan A.A. , Manukyan A.S. , Sharoyan E.G. , Bugaev L.A.
Formation of Nickel Magnetic Nanoparticles and Modification of Nickel Phthalocyanine Matrix by Sodium Doping

Technical Physics. 2017. V.62. N10. P.1538-1544. DOI: 10.1134/s1063784217100152 WOS Scopus РИНЦ CAPlus OpenAlex

Колпачева Н.А. , Авраменко М.В. , Авакян Л.А. , Зубавичус Я.В. , Мирзаханян А.А. , Манукян А.С. , Шароян Э.Г. , Бугаев Л.А.
Формирование магнитных никелевых наночастиц и изменения матрицы фталоцианина никеля при допировании натрием

Журнал технической физики. 2017. Т.87. №10. С.1532-1538. DOI: 10.21883/JTF.2017.10.44998.2149 РИНЦ OpenAlex

Полный текст от издателя

Поступила в редакцию:	27 дек. 2016 г.
Опубликована в печати:	1 окт. 2017 г.
Опубликована online:	23 окт. 2017 г.

Web of science:	WOS:000413438900014
Scopus:	2-s2.0-85031998272
РИНЦ:	31068702
Chemical Abstracts:	2017:1703760
OpenAlex:	W2765498268

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