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Room Temperature Ferromagnetism in Powder Form of Sn1-xCrxO2 (x = 0.01, 0.02, 0.03, 0.04 and 0.05) Solid Solution

Published online by Cambridge University Press:  31 January 2011

Kun Xu ,
Mitsuru Izumi ,
Osami Yanagisawa  and
Tetsuya Ida
Kun Xu
Affiliation:
[email protected], Tokyo University of Marine Science and Technology, Tokyo, Japan
Mitsuru Izumi
Affiliation:
[email protected], Tokyo University of Marine Science and Technology, Tokyo, Japan
Osami Yanagisawa
Affiliation:
[email protected], Yuge National College of Maritime Technology, Yuge, Japan
Tetsuya Ida
Affiliation:
[email protected], Hiroshima National College of Maritime Technology, Hiroshima, Japan
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Abstract

Structural and magnetic properties were investigated in the mixed powders of Sn1-xCrxO2 (x = 0.01, 0.02, 0.03, 0.04 and 0.05) in nominal composition. The lattice parameter observed in (110) x-ray diffraction indicates two step changes with increasing Cr content. The occupation of Cr ion at the interstitial position leads to elongation of the lattice parameter for x = 0.01 to x =0.03. Then, the Cr3+ ions are remarkably substituted into the Sn4+ ion site for x = 0.04 to x = 0.05, which results in shortening of the lattice. The lattice parameters for x = 0.01 and 0.02 are larger than x = 0.03 to 0.05. The room temperature ferromagnetism appeared in the sample with x = 0.01 and reaches maximum at the doping rate of x = 0.02; while the magnetization decreases for x > 0.02 was observed. Present study clearly shows the existence of correlation between appearance of ferromagnetism and the structural change.

Keywords

magnetic propertiesx-ray diffraction (XRD)dopant
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1201: Symposium H – Zinc Oxide and Related Materials-2009 , 2009 , 1201-H10-01
Copyright
Copyright © Materials Research Society 2010

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References

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