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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НТК «Інститут монокристалів» НАН України
2009
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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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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 |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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Characterization and properties Characterization and properties |
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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 |
work_keys_str_mv |
AT shevchukvn structurefeaturesandparamagneticcentresinoxidenanopowders AT popovychdi structurefeaturesandparamagneticcentresinoxidenanopowders AT usatenkoyun structurefeaturesandparamagneticcentresinoxidenanopowders AT demchenkopyu structurefeaturesandparamagneticcentresinoxidenanopowders AT serkizrya structurefeaturesandparamagneticcentresinoxidenanopowders |
first_indexed |
2025-07-10T06:53:35Z |
last_indexed |
2025-07-10T06:53:35Z |
_version_ |
1837241909576204288 |
fulltext |
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