Abstract Co 1-x Zn x Fe 2 O 4 (0.08 ≤ x ≤ 0.56) powders prepared by a sol-gel auto-combustion method have been investigated through the combined use of structural and dc/ac-magnetization measurements under a wide range of applied magnetic field values. EDS spectra are performed to evaluate the samples chemical composition, whereas the X-ray diffraction measurements indicate the formation of the typical nanocrystalline mixed cubic spinel structure and allow to determine the cationic distribution as well as the lattice parameter and the oxygen position as function of Zn content. Magnetic characterization improves the knowledge about the correlation between the structural properties and magnetic behavior. The magnetization curves show a hysteretic behavior at room temperature and they are analyzed as function of Zn content taking in account the Yafet-Kittel’s model. The replacement of non-zero magnetic moment Co 2+ ions with zero magnetic moment Zn 2+ ions induces a gradual reduction of magnetocrystalline anisotropy and a lowering of the magnetic coercivity. The energy lost in a static and alternating magnetic field (frequency of 69 kHz) at selected vertex field values for the studied samples has been calculated in order to evaluate their prospective usage to operate in different field conditions.

中文翻译：

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阳离子分布对Co 1-x Zn x Fe 2 O 4 铁氧体粉末静动态磁性能的影响

摘要 结合结构测量和直流/交流磁化测量，研究了通过溶胶-凝胶自燃法制备的 Co 1-x Zn x Fe 2 O 4 (0.08 ≤ x ≤ 0.56) 粉末。外加磁场值。执行 EDS 光谱以评估样品的化学成分，而 X 射线衍射测量表明典型纳米晶混合立方尖晶石结构的形成，并允许确定阳离子分布以及晶格参数和氧位置作为 Zn 的函数内容。磁性表征提高了关于结构特性和磁性行为之间相关性的知识。磁化曲线在室温下表现出滞后行为，并且考虑到 Yafet-Kittel 模型，将它们作为 Zn 含量的函数进行分析。用零磁矩Zn 2+ 离子替代非零磁矩Co 2+ 离子引起磁晶各向异性的逐渐降低和矫顽力的降低。计算了所研究样品在选定顶点场值下静态和交变磁场（频率为 69 kHz）中的能量损失，以评估它们在不同场条件下的预期用途。