Sonochemical synthesis of nanocrystalline rare earth orthoferrites using Fe(CO)5 precursor

M. Sivakumar, A. Gedanken*, D. Bhattacharya, I. Brukental, Y. Yeshurun, W. Zhong, Y. W. Du, I. Felner, I. Nowik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

This paper describes, for the first time, a simple sonochemical method for the synthesis of nanoparticles of a series of rare earth orthoferrites. This sonochemical process is enabling synthesis of nanoparticles of the rare earth orthoferrites at a substantially lower calcination temperature by using simple precursors, iron pentacarbonyl and rare earth carbonates. It is particularly noteworthy that the cogeneration of the garnet phase has not been observed, as is usual with the conventional methods. The drastic reduction in the calcination temperature could be due to the ultrasonic generation of amorphous iron oxide from Fe(CO)5. Nanosized GdFeO3, ErFeO3, TbFeO3, and EuFeO3 were prepared by this method and their magnetic properties were also studied in detail.

Original languageEnglish
Pages (from-to)3623-3632
Number of pages10
JournalChemistry of Materials
Volume16
Issue number19
DOIs
StatePublished - 21 Sep 2004

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