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Magnetic behavior of Cd2+ substituted cobalt ferrites
Dept of Physics, Khulna University of Engineering and Technology, Khulna, Bangladesh.
Material Science Division, Atomic Energy Centre, Dhaka, Bangladesh.
Dept of Physics, Khulna University of Engineering and Technology, Khulna, Bangladesh.
Material Science Division, Atomic Energy Centre, Dhaka, Bangladesh.
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2012 (English)In: Journal of Physics and Chemistry of Solids, ISSN 0022-3697, E-ISSN 1879-2553, Vol. 73, no 2, 227-231 p.Article in journal (Refereed) Published
Abstract [en]

The effect of Cd-substitution on the variation of saturation magnetization M,, Curie temperature T-c, and magnetic moments n(B) of Co1-xCdxFe2O4 (x=0.0-1.0 in steps of 0.1) ferrites have been investigated using SQUID magnetometer and impedance analyzer. The samples were prepared by conventional double sintering ceramic technique and found to be single-phase cubic spinel structure by X-ray diffraction. Saturation magnetization M-s, is found to increase with increase of Cd substitution attaining a maximum value at x=0.4 and decreases thereafter. Curie temperature decreases almost linearly with increasing x content up to x=0.7. Samples having x >= 0.8 display complex magnetic behavior with competing antiferromagnetic and ferromagnetic interactions with the manifestation of large hysteresis at low temperature and no sign of saturation. Samples with x > 0.8 show paramagnetic characteristic at T=5 K with no spontaneous magnetization revealed through Arrot-Belov-Kouvel (ABK) plots.

Place, publisher, year, edition, pages
2012. Vol. 73, no 2, 227-231 p.
Keyword [en]
Magnetic material, X-ray diffraction, Magnetic properties
National Category
Physical Sciences Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
URN: urn:nbn:se:uu:diva-171430DOI: 10.1016/j.jpcs.2011.10.038ISI: 000300265000015OAI: oai:DiVA.org:uu-171430DiVA: diva2:510923
Available from: 2012-03-19 Created: 2012-03-19 Last updated: 2017-12-07Bibliographically approved

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Nordblad, Per

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