Open AccessSTUDY ON THE M?SSBAUER EFFECT OF γ-Fe2O3 POWDER WITH CoxFe3-xO4-DOPED COATING
Author(s) -
Li Shi,
Zang Pei-Qun,
Ji Gui-Quan,
Luo He-Lie,
Sun Ke
Publication year - 1981
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.30.120
Subject(s) - materials science , coating , coercivity , doping , mössbauer spectroscopy , solid solution , mössbauer effect , epitaxy , analytical chemistry (journal) , chemical engineering , condensed matter physics , crystallography , metallurgy , composite material , optoelectronics , chemistry , chromatography , engineering , physics , layer (electronics)
The γ-Fe2O3 powder with CoxFe3-xO4-doped coating was obtained by reaction of the γ-Fe2O3 powder in the solutions containing Co++ and Fe++ ions. It was found that this epitaxial CoxFe3-xO4 coating raised the coercivity of the γ-Fe2O3 from 420 (Oe) to 715 (Oe).The epitaxial CoxFe3-xO4 coating was isvestigated by means of M?ssbauer Effect of 57Fe. The M?ssbauer Spectrum indicates that the surface of γ-Fe2O3 was doped with CoxFe3-xO4 solid solution, and a static magnetic interaction takes place between the γ-Fe2O3 matrix and CoxFe3-xO4 solid solution.