Formation of Nickel Magnetic Nanoparticles and Modification of Nickel Phthalocyanine Matrix by Sodium Doping | Sciact - CRIS-system of Boreskov Institute of Catalysis

Formation of Nickel Magnetic Nanoparticles and Modification of Nickel Phthalocyanine Matrix by Sodium Doping Full article

Journal

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

Output data

Year: 2017, Volume: 62, Number: 10, Pages: 1538-1544 Pages count : 7 DOI: 10.1134/s1063784217100152

Tags

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

Authors

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

Affiliations

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 AN 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

Full text from publisher

Submitted:	Dec 27, 2016
Published print:	Oct 1, 2017
Published online:	Oct 23, 2017

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

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