Effect of the chemical substitution on structural parameters and microwave properties of the Co–Ni–Zn spinels

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t Pub Date : 2024-09-10 DOI:10.1016/j.jmrt.2024.09.055

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引用次数: 0

Abstract

Co_0.3Ni_0.7-xZn _xFe₂O₄ (where x = 0.00–0.7 with step 0.1) spinels or CNZF with constant Co concentration and varying of the Ni/Zn concentration were obtained by the ceramic method from initial oxides. Based on X-ray diffraction data it was concluded that all samples are single-phase (SG: Fd-3m). Concentration dependences of the lattice constant and unit cell volume correlate well with Vegard's rule and the average value of the Zn²⁺ and Ni²⁺ ionic radii. The microwave permeability was measured in the frequency range of 0.1–20 GHz by a coaxial technique. Two resonances on frequency dependences were observed. Analysis of the microwave properties and magnetostatic data showed that low-frequency magnetic peak was caused by a resonance of domain boundaries; high-frequency peak was due to a natural ferrimagnetic resonance. Obtained results opens broad perspectives for practical application of such kind of materials and possibility for microwave parameters control by the external magnetic field.

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化学取代对钴-镍-锌尖晶石结构参数和微波特性的影响

Co0.3Ni0.7-xZn xFe2O4（其中 x = 0.00-0.7，步长为 0.1）尖晶石或 CNZF 具有恒定的 Co 浓度和不同的 Ni/Zn 浓度，由初始氧化物通过陶瓷法获得。根据 X 射线衍射数据得出结论，所有样品均为单相（SG：Fd-3m）。晶格常数和单位晶胞体积的浓度相关性与 Vegard 规则以及 Zn2+ 和 Ni2+ 离子半径的平均值密切相关。采用同轴技术测量了 0.1-20 GHz 频率范围内的微波渗透率。观察到两个与频率相关的共振。对微波特性和磁静力数据的分析表明，低频磁峰值是由畴界共振引起的；高频峰值是由自然铁磁共振引起的。获得的结果为这类材料的实际应用开辟了广阔的前景，并为通过外部磁场控制微波参数提供了可能性。

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.