Structure features and paramagnetic centres in oxide nanopowders

Nanopowders ZnO, SiO₂, SiO₂/10 % V₂O₅ obtained by sol-gel technology were investigated by electron paramagnetic resonance (EPR) method at temperature of liquid nitrogen. The structures of the samples are analyzed by X-ray diffraction method. Surface morphology and chemical elementwise composition of...

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Datum:2009
Hauptverfasser: Shevchuk, V.N., Popovych, D.I., Usatenko, Yu.N., Demchenko, P.Yu., Serkiz, R.Ya.
Format: Artikel
Sprache:English
Veröffentlicht: НТК «Інститут монокристалів» НАН України 2009
Schriftenreihe:Functional Materials
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Online Zugang:http://dspace.nbuv.gov.ua/handle/123456789/138938
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Structure features and paramagnetic centres in oxide nanopowders // V.N. Shevchuk, D.I. Popovych, Yu.N. Usatenko, P.Yu. Demchenko, R.Ya. Serkiz // Functional Materials. — 2009. — Т. 16, № 4. — С. 448-455. — Бібліогр.: 42 назв. — англ.

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spelling irk-123456789-1389382018-06-20T03:03:50Z Structure features and paramagnetic centres in oxide nanopowders Shevchuk, V.N. Popovych, D.I. Usatenko, Yu.N. Demchenko, P.Yu. Serkiz, R.Ya. Characterization and properties Nanopowders ZnO, SiO₂, SiO₂/10 % V₂O₅ obtained by sol-gel technology were investigated by electron paramagnetic resonance (EPR) method at temperature of liquid nitrogen. The structures of the samples are analyzed by X-ray diffraction method. Surface morphology and chemical elementwise composition of powders were studied using scanning electron microscopy. For the nanocomposite SiO₂/10 % V₂O₅ structure of EPR spectrum is described as a result of unpaired electron and isotope nucleus ⁵¹V interaction. The prevailed EPR signal in ZnO is hypothetically associated with single-charge vacancy in oxygen sub-lattice. Нанопороmки ZnO, SiO₂, SiO₂/10 % V₂O₅, отримані за sol-gel- технологією досліджено методом електронного парамагнітного резонансу (ЕПР) при температурі рідкого азоту. Структуру зразків проаналізовано з використанням методу рентгенівської дифракції. Морфологію поверхні та хімічний елементний склад порошків вивчено скануючим електронним мікроскопом. Для нанокомпозиту SiO₂/10 % V₂O₅ структура ЕПР спектра приписується результату взаємодії неспареного електрона з ядром ізотопу ⁵¹V. Домінуючий сигнал ЕПР у ZnO попередньо пов'язується з однозарядною вакансією у кисневій підгратці. Нанопорошки ZnO, SiO₂, SiO₂/10% V₂O₅, полученные по sоl-gеl-технологии, исследованы методом электронного парамагнитного резонанса (ЭПР) при температуре жидкого азота. Структура образцов проанализирована с использованием методарентгеновской дифракции. Морфология поверхности и химический элементный состав порошков изучался сканирующим электронным микроскопом. Для нанокомпозита SiO₂/10 % V₂O₅ структура ЭПР спектра приписывается результату взаимодействия неспаренного электрона с ядром изотопа ⁵¹V. Доминирующий сигнал ЭПР в ZnO предварительно связывается с однозарядной вакансией в кислородной подрешетке. 2009 Article Structure features and paramagnetic centres in oxide nanopowders // V.N. Shevchuk, D.I. Popovych, Yu.N. Usatenko, P.Yu. Demchenko, R.Ya. Serkiz // Functional Materials. — 2009. — Т. 16, № 4. — С. 448-455. — Бібліогр.: 42 назв. — англ. 1027-5495 http://dspace.nbuv.gov.ua/handle/123456789/138938 en Functional Materials НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Characterization and properties
Characterization and properties
spellingShingle Characterization and properties
Characterization and properties
Shevchuk, V.N.
Popovych, D.I.
Usatenko, Yu.N.
Demchenko, P.Yu.
Serkiz, R.Ya.
Structure features and paramagnetic centres in oxide nanopowders
Functional Materials
description Nanopowders ZnO, SiO₂, SiO₂/10 % V₂O₅ obtained by sol-gel technology were investigated by electron paramagnetic resonance (EPR) method at temperature of liquid nitrogen. The structures of the samples are analyzed by X-ray diffraction method. Surface morphology and chemical elementwise composition of powders were studied using scanning electron microscopy. For the nanocomposite SiO₂/10 % V₂O₅ structure of EPR spectrum is described as a result of unpaired electron and isotope nucleus ⁵¹V interaction. The prevailed EPR signal in ZnO is hypothetically associated with single-charge vacancy in oxygen sub-lattice.
format Article
author Shevchuk, V.N.
Popovych, D.I.
Usatenko, Yu.N.
Demchenko, P.Yu.
Serkiz, R.Ya.
author_facet Shevchuk, V.N.
Popovych, D.I.
Usatenko, Yu.N.
Demchenko, P.Yu.
Serkiz, R.Ya.
author_sort Shevchuk, V.N.
title Structure features and paramagnetic centres in oxide nanopowders
title_short Structure features and paramagnetic centres in oxide nanopowders
title_full Structure features and paramagnetic centres in oxide nanopowders
title_fullStr Structure features and paramagnetic centres in oxide nanopowders
title_full_unstemmed Structure features and paramagnetic centres in oxide nanopowders
title_sort structure features and paramagnetic centres in oxide nanopowders
publisher НТК «Інститут монокристалів» НАН України
publishDate 2009
topic_facet Characterization and properties
url http://dspace.nbuv.gov.ua/handle/123456789/138938
citation_txt Structure features and paramagnetic centres in oxide nanopowders // V.N. Shevchuk, D.I. Popovych, Yu.N. Usatenko, P.Yu. Demchenko, R.Ya. Serkiz // Functional Materials. — 2009. — Т. 16, № 4. — С. 448-455. — Бібліогр.: 42 назв. — англ.
series Functional Materials
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first_indexed 2025-07-10T06:53:35Z
last_indexed 2025-07-10T06:53:35Z
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