Open AccessMODIFICATION STUDIES ON CAOTING Sr-FERRITE NANOPARTICLES
Author(s) -
QingQing Fang,
Wenjun Zhong,
Du Yu-Wei
Publication year - 1999
Publication title -
wuli xuebao
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.