Effect of Wood Template on Magnetic Properties of Ni_0.5Zn_0.5Fe_2-xCr_xO₄ Ceramics

Abstract:

Porous Ni_0.5Zn_0.5Fe_2-xCr_xO₄ (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5) ceramics were prepared by a sol-gel method using basswood as the mold. At the same time, Ni_0.5Zn_0.5Fe_2-xCr_xO₄ nanocrystalline powders were obtained by sintering the gel in oxygen at high temperature. The result of the XRD test showed that all samples presented the single-phase of the cubic spinel structure. With the increase of doping amount x, both porous ceramics and nanopowders decreased their grain size; At the same doping amount, the grain size of powder ferrites was about twice as large as that of porous ceramics. The magnetic test results showed that with the increase of doping amount x, the coercivity values increased monotonously and the saturation magnetization values decreased monotonously for all samples. Under the same doping content, the saturation magnetization values were lower but the coercivity values were higher as compared to the powder ferrites.

• Periodical: Materials Science Forum (Volume 956)
• Pages: 107-113
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.956.107
• Online since: June 2019
• Authors: Rui Li*, Liang Cun Qian, Xue Feng Sun
• Keywords: Electromagnetic Properties, Ni_0.5Zn_0.5Fe_2-xCr_xO ₄, Porous Materials, Sol-Gel Preparation

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