Structure and magnetic properties of multi-layered ZrO2 nanoparticles embedded in Al2O3 matrix and doped with 57Fe3+ ions

Nikolaev, S.A.; Ellert, O.G.; Maksimov, Y.V.; Imshennik, V.K.; Maslov, D.A.; Bukhtenko, O.V.; Egorysheva, A.V.; Tsodikov, M.V.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 августа 2016 г.

Авторы: Nikolaev S.A., Ellert O.G., Maksimov Yu V., Imshennik V.K., Maslov D.A., Bukhtenko O.V., Egorysheva A.V., Tsodikov M.V.
Журнал: Materials Chemistry and Physics
Том: 178
Год издания: 2016
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 31
Последняя страница: 38
DOI: 10.1016/j.matchemphys.2016.04.037
Аннотация: The multi-layered 3−8 nm ZrO2 particles doped with 57Fe3+ ions were synthesized by successive impregnations of Al2O3 with a solution of Zr isopropoxide and 57Fe acetylacetonate. This gave (Fe-ZrO2)/Al2O3 samples containing ZrO2 (≈30 mass %) and different Fe content (0.06-0.26 mass %). By means of XRD, TEM and EDS techniques, it was found that the size of ZrO2 nanoparticles in the (Fe-ZrO2)/Al2O3 samples increases in proportion to the Fe content. According to magnetic measurements and Mössbauer spectroscopy data, (Fe-ZrO2)/Al2O3 samples contain two types of paramagnetic high-spin 57Fe3+ ions. The 57Fe3+ ions of type (I) are most probably adsorbed on the outer surface of ZrO2 nanoparticles and are responsible for the spin-lattice relaxation observed in the (Fe-ZrO2)/Al2O3 samples. The 57Fe3+ ions of type (II) are embedded in the bulk of ZrO2 nanoparticles by replacing the octahedral Zr4+ positions to give a mixed oxide. As the Fe content in the (Fe-ZrO2)/Al2O3 samples increases, the fraction 57Fe3+ ions of type (I) decreases, while that of 57Fe3+ ions of type (II) increases.
Добавил в систему: Николаев Сергей Александрович

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Structure and magnetic properties of multi-layered ZrO2 nanoparticles embedded in Al2O3 matrix and doped with 57Fe3+ ionsстатья

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