Open AccessTHE EFFECT OF SURFACTANT ON THE MAGNETIC PROPERTIES AND M?SSBAUER SPECTRA OF MEGNETITE
Author(s) -
Yong Du,
Huanjun Lu,
Wang Ting-Xiang,
Yaqi Wang
Publication year - 1982
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.31.1417
Subject(s) - magnetite , materials science , pulmonary surfactant , coating , absorption (acoustics) , particle size , spectral line , magnetization , absorption spectroscopy , anisotropy , particle (ecology) , magnetic field , analytical chemistry (journal) , chemical engineering , nanotechnology , chemistry , optics , composite material , physics , metallurgy , chromatography , quantum mechanics , oceanography , astronomy , geology , engineering
The magnetic properties, infrared absorption spectra and M?ssbauer spectra of dif f irent size magnetite particles were measured before and after coating with organic surfactant. The experimental results show that the nature of coating is chemical absorption between the fine magnetite particle surface and the surfactant. After coating the specific magnetization is reduced under equal magnetic field condition and M?ssbauer spectra become more broadened with the magnetite particle size decreasing. The experimental results may be explained by the surface anisotropy theory.