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Influence of ferrite phase on electrical properties of the barium zirconium titanate based multiferroic composites
Journal of Electroceramics ( IF 1.7 ) Pub Date : 2021-06-16 , DOI: 10.1007/s10832-021-00244-9
Adis S. Dzunuzovic , M. M. Vijatovic Petrovic , J. D. Bobic , N. I. Ilic , B. D. Stojanovic

Multiferroic composites with general formula Ba(Ti0.95Zr0.05)O3 – Ni0.7Zn0.3Fe2O4, Ba(Ti0.95Zr0.05)O3 – CoFe2O4, Ba(Ti0.95Zr0.05)O3 – Ni0.7Cu0.01Sm0.05Zn0.29Fe1.95O4, (BTZr(95–5) – NZF, BTZr(95–5) – CF, BTZr(95–5) – NCuSmZF) were prepared by mixing chemically obtained different types of ferrites and BTZ(95–5) powders in the planetary mill for 24 h. The optimization of sintering process was performed and powders were pressed and sintered at 1300 °C for obtained composites samples. From the X-ray analysis for single phase and composites ceramics the formation of crystallized structure of ferrites and barium zirconium titanate can be noticed. SEM analyses indicated the formation of two types nanosized grains, polygonal ferromagnetic and rounded ferroelectric grains. The electrical properties of these materials were investigated using impedance spectroscopy and analysis of ferroelectric measurements. Impedance analysis of all investigated samples has shown different relaxation processes that originated from the grain and grain boundary contributions. The results of polarization vs. electric field measurements have shown the influence of magnetic phase type and its concentration on the ferroelectric properties of the composites. Due to high conductivity of ferrite phases and presence of interfacial polarization, the shapes of these curves differed from the conventional ferroelectric materials.



中文翻译:

铁素体相对钛酸锆钡基多铁性复合材料电性能的影响

多重铁性复合材料具有一般式:Ba(钛0.950.05)O 3 -镍0.70.3的Fe 2 ö 4,钡(钛0.950.05)O 3 -的CoFe 2 ö 4,BA(钛0.950.05)O 3 -镍0.7 Cu 0.01 Sm 0.05 Zn 0.29 Fe 1.95 O 4, (BTZr(95-5) – NZF, BTZr(95-5) – CF, BTZr(95-5) – NCuSmZF) 是通过混合化学获得的不同类型的铁氧体和 BTZ(95-5) 粉末在行星研磨 24 小时。对烧结工艺进行优化,将粉末压制并在 1300 °C 下烧结,以获得复合材料样品。从单相陶瓷和复合陶瓷的 X 射线分析中,可以注意到铁氧体和钛酸锆钡的结晶结构的形成。SEM 分析表明形成了两种类型的纳米颗粒,多边形铁磁颗粒和圆形铁电颗粒。使用阻抗谱和铁电测量分析来研究这些材料的电性能。所有研究样品的阻抗分析表明,源自晶粒和晶界贡献的不同弛豫过程。极化与电场测量的结果显示了磁相类型及其浓度对复合材料铁电性能的影响。由于铁氧体相的高导电性和界面极化的存在,这些曲线的形状不同于传统的铁电材料。

更新日期:2021-06-17
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