Phase composition and structure of iron oxide nanopowders prepared by chemical meansстатья
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Дата последнего поиска статьи во внешних источниках: 27 января 2018 г.
Авторы:
Salikhov S.V.,
Savchenko A.G.,
Grebennikov I.S.,
Yurtov E.V.
Журнал:
Bulletin of the Russian Academy of Sciences: Physics
Том:
79
Номер:
9
Год издания:
2015
Издательство:
Allerton Press Inc.
Местоположение издательства:
United States
Первая страница:
1106
Последняя страница:
1112
DOI:
10.3103/S1062873815090166
Аннотация:
The phase composition and structure of iron oxide nanopowders obtained by different chemical means are explored via X-ray diffraction, transmission electron microscopy, and Mössbauer and X-ray photoelectron spectroscopy. It is shown that nanoparticles with sizes of 10–85 nm are nonstoichiometric magnetite–maggemite compounds. Particles with average sizes of 10 nm are close in composition and structure to (γ-Fe<inf>2</inf>O<inf>3</inf>) maggemite, while those with sizes above 70 nm resemble (Fe<inf>3</inf>O<inf>4</inf>) magnetite. Estimates of the magnetite particle size yield a value of 130 nm, which may be considered the conditional boundary from the bulk state to nanoscale effects. © 2015, Allerton Press, Inc.
Добавил в систему:
Юртов Евгений Васильевич