MODIFICATION STUDIES ON CAOTING Sr-FERRITE NANOPARTICLES | Zendy

QingQing Fang | Zendy; Zhong Wei | Zendy; DU YU-WEI | Zendy

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MODIFICATION STUDIES ON CAOTING Sr-FERRITE NANOPARTICLES

Author(s) -

QingQing Fang,

Zhong Wei,

DU YU-WEI

Publication year - 1999

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.48.1170

Subject(s) - materials science , spinel , coating , nanoparticle , chemical engineering , ferrite (magnet) , ion , crystal structure , suspension (topology) , overlayer , magnetic nanoparticles , composite material , nanotechnology , crystallography , metallurgy , chemistry , mathematics , organic chemistry , homotopy , pure mathematics , engineering

Using XRD and TEM techniques, the modification mechanism of Fe3O4-SrFe12O19 particles has been studied. We have also studied the growth mechanism of spinel phase coating overlayer, and demonstrated that there exists a strong exchange coupling between coating overleyer and core particles due to the complexation of Fe2+ ions in suspension and Fe3+ ions extracted from the core particles. After modification, crystal structure and magnetic properties of SiFe12O19 particles were modified.

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