Influences of Nd3+ Ions Substitution on the Structure and Electromagnetic Properties of the Nanocrystalline Co0.5Zn0.5Fe2O4 Ferrite

Rui Ting Ma; San Kuan Chen; Gang Zhang

doi:10.4028/www.scientific.net/AMR.194-196.524

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 194-196Influences of Nd3+ Ions Substitution on the...

Influences of Nd³⁺ Ions Substitution on the Structure and Electromagnetic Properties of the Nanocrystalline Co_0.5Zn_0.5Fe₂O₄ Ferrite

Abstract:

The spinel nanocrystalline Co_0.5Zn_0.5Nd_0.05Fe_1.95O₄ ferrite was prepared by polyacrylamide gel method. Influences of Nd³⁺ ions substitution on the microstructural and electromagnetic properties for the Co_0.5Zn_0.5Fe₂O₄ ferrites had been systematically investigated by X-ray diffraction (XRD), transmission electron microscope (TEM) and wave-guide method. The results showed that the Nd³⁺ ions can replace Fe³⁺ ions and adjust lattice parameters. The average size of the Co_0.5Zn_0.5Fe₂O₄ and Co_0.5Zn_0.5Nd_0.05Fe_1.95O₄ particles were identified to be about 50nm and 60nm by TEM, respectively. The complex permittivity (=ε′-jε″) and complex permeability (=μ′-jμ″) for the composites had been measured in the frequency range of 8.2-12.4GHz. The results showed that the Co_0.5Zn_0.5Fe₂O₄ and Co_0.5Zn_0.5Nd_0.05Fe_1.95O₄ ferrites had both dielectric loss and magnetic loss. The dielectric loss tangent (tgδ_ε) and magnetic loss tangent (tgδ_m) for the Co_0.5Zn_0.5Nd_0.05Fe_1.95O₄ ferrite were obviously higher than those of the Co_0.5Zn_0.5Fe₂O₄. The maximal value of tgδ_ε and tgδ_m for the Co_0.5Zn_0.5Nd_0.05Fe_1.95O₄ ferrite was around 0.30 at 12.4GHz and 0.16 at 10.8GHz, respectively.

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Advanced Materials Research (Volumes 194-196)

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524-528

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https://doi.org/10.4028/www.scientific.net/AMR.194-196.524

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February 2011

Authors:

Rui Ting Ma, San Kuan Chen, Gang Zhang

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Dielectric Property, Ferrite, Magnetic Property, Nd³⁺Ion, Polyacrylamide Gel Method

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