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Effect of fractional substitution of Sb~(3+) ions on structural, magnetic and electrical properties of cobalt ferrite

机译:Sb〜(3+)离子分数取代对钴铁氧体结构,磁性和电性能的影响

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The present work suggests the preparation of a series of Sb-substituted cobalt ferrite by the sol-gel auto-combustion method. The phase purity of the samples was evaluated by X-ray diffraction, Raman analysis, and infrared spectroscopy. Raman and infrared spectra exhibited the characteristic absorption bands corresponding to M-0 stretching vibrations. The precise chemical composition was verified using the Inductively coupled plasma -atomic emission spectroscopy technique. X-ray photoelectron spectroscopy studies validated the chemical state of present species of the metal ions. The morphology of the samples and their particle sizes were estimated by Scanning electron microscopy and Transmission electron microscopy analysis, respectively. The saturation magnetization decreased with Sb-substitution both at 300 K and 50 K and showed a comparatively higher value at 50 K. The DC electrical resistivity studies showed the semiconducting behavior of the materials and an increasing trend observed with Sb~(3+) ions content. The increase in dielectric constant with increasing Sb~(3+) ions concentration and the temperature was observed.
机译:本作者表明,通过溶胶 - 凝胶自燃方法制备一系列Sb取代的钴铁氧体。通过X射线衍射,拉曼分析和红外光谱评估样品的相纯度。拉曼和红外光谱表现出对应于M-0拉伸振动的特征吸收带。使用电感耦合等离子体 - 陶瓷发射光谱技术验证了精确的化学组合物。 X射线光电子能谱研究验证了金属离子的现有物种的化学状态。通过扫描电子显微镜和透射电子显微镜分析估计样品及其粒度的形态。饱和磁化强度在300k和50k下,Sb取代均降低,并且在50k下显示相对较高的值。DC电阻率研究显示了材料的半导体行为和用Sb〜(3+)离子观察到的趋势。内容。观察到随着Sb〜(3+)离子浓度和温度的增加,介电常数的增加。

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