Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Applied and Materials
Preparation and Physical Properties of EuO Nanocrystals Using Eu(II)-Exchanged Zeolite X as a Precursor
Supitcha ThongchantShinya KatagiriYasuchika HasegawaYuji WadaSeiji WataseMasami NakamotoTakao SakataHirotaro MoriShozo Yanagida
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2004 Volume 77 Issue 4 Pages 807-812


The cation-exchange of zeolite X with divalent europium has been achieved using a methanol solution containing Eu(II) prepared by photochemical reduction of Eu(III). Emission spectra have confirmed that the valence of europium ion in the ion-exchanged zeolite X was divalent. A blue shift of emission spectra was observed after exposing Eu(II)X to air at room temperature. TEM have revealed the formation of EuO nanocrystals with average size of 4.2 nm on the outer surface of Eu(II)X. EuO nanocrystals show ferromagnetism accompanied by photo-response magnetism under UV irradiation.

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© 2004 The Chemical Society of Japan
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