Title :
Magnetic and Magnetoelastic Properties of Chromium Substituted Cobalt Ferrite
Author :
Lo, C. ; Matlage, P. ; Melikhov, Y. ; Snyder, J. ; Song, S. ; Jiles, D.
Author_Institution :
Iowa State Univ., Ames
Abstract :
In the present study, A series of polycrystalline chromium-substituted cobalt ferrite samples with compositions of CoCrxFe2-xO4 were prepared by standard powder ceramic techniques. The microstructure and final composition of the samples were characterized using a scanning electron microscope with energy-dispersive X-ray spectroscopy (EDX). The crystal structure of the samples was determined by X-ray diffractometry to be cubic spinel. Curie temperature, Tc, was determined by measuring magnetization as a function of temperature in a vibrating sample magnetometer (VSM). Magnetostriction as a function of applied field was measured using the strain gauge method. The results show that Cr substitution has more profound effects on the Curie temperature and magnetoelastic properties of cobalt ferrite than does Mn substitution.
Keywords :
Curie temperature; X-ray chemical analysis; X-ray diffraction; chromium compounds; cobalt compounds; crystal structure; ferrites; magnetisation; magnetoelastic effects; magnetometers; magnetostriction; powder technology; scanning electron microscopy; strain gauges; CoCrFe2O4; Curie temperature; EDX; VSM; X-ray diffractometry; chemical composition; crystal structure; cubic spinel phase; energy-dispersiveX-ray spectroscopy; magnetization; magnetoelastic properties; magnetostriction; microstructure; polycrystalline chromium substituted cobalt ferrite; scanning electron microscopy; standard powder ceramic technique; strain gauge method; vibrating sample magnetometer; Chromium; Cobalt; Ferrites; Iron; Magnetic field measurement; Magnetic properties; Magnetostriction; Powders; Strain measurement; Temperature;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376182