Cation distribution by Rietveld, spectral and magnetic studies of chromium-substituted nickel ferrites
Ultrafine crystals of chromium-substituted nickel ferrite were prepared by wet chemical co-precipitation method using sulphates of respective metal ions. Formation of these materials has been confirmed by X-ray powder diffraction method. The fine crystal nature of these materials is evidenced from s...
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Published in | Applied physics. A, Materials science & processing Vol. 95; no. 2; pp. 429 - 434 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer-Verlag
01.05.2009
Springer |
Subjects | |
Online Access | Get full text |
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Summary: | Ultrafine crystals of chromium-substituted nickel ferrite were prepared by wet chemical co-precipitation method using sulphates of respective metal ions. Formation of these materials has been confirmed by X-ray powder diffraction method. The fine crystal nature of these materials is evidenced from scanning electron microscope (SEM). Cation distribution has been investigated using X-ray diffraction technique. Cation distribution indicates that chromium occupy octahedral site for all the values of composition
x
. The saturation magnetization and magneton number both are decreasing with increase of chromium concentration
x
. The decrease in saturation magnetization and magneton number is attributed to the substitution of the Cr
3+
ions. Curie temperature (
T
C
) from susceptibility plot is found to decrease with Cr concentration
x
. Curie temperature of all the compositions are also obtained theoretically and it agrees with observed Curie temperature. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0947-8396 1432-0630 |
DOI: | 10.1007/s00339-008-4897-0 |