Cobalt ferrites have attracted extraordinary attention due to their high coercivity, chemical stability, and mechanical hardness. Lanthanum doped-cobalt ferrites having chemical formula CoLa_xFe_2-xO₄ with composition x = (0.00, 0.015, 0.045, 0.060) were synthesized by chemical co-precipitation method. The prepared samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and current-voltage (I-V) technique. The structure of the crystal was analyzed by X-ray diffraction. The crystallite size of nanoparticles was examined in the range of 21–25 nm, and a fluctuating trend was found with the inclusion of La³⁺ cations. The X-ray diffraction patterns verify the contraction of lattice constant and unit cell volume with the substitution of La³⁺ cations except for the concentration of x = 0.060. Lattice constant was in the range of 8.34 Å–8.41 Å while unit volume cell was in the range of 580 Å³–596 Å³. The resistivity of all samples was calculated by the application of two probes I-V technique. The maximum resistivity of the order of 81.129 × 10⁵ Ω cm was found for the concentration of x = 0.060 at 723 K which makes it useful for high-frequency gimmicks applications. The resistivity and drift mobility were found inversely related to each other. The inverse relation low-frequency absorption band and high-frequency absorption bands were analyzed by Fourier-transform infrared spectroscopy technique.

铁氧体钴由于其高矫顽力，化学稳定性和机械硬度而备受关注。通过化学共沉淀法合成了化学式为CoLa _x Fe _2-x O ₄的组成为x =（0.00、0.015、0.045、0.060）的镧掺杂钴铁氧体。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR），拉曼光谱和电流-电压（IV）技术对制备的样品进行表征。通过X射线衍射分析晶体的结构。在21–25 nm的范围内检查了纳米颗粒的微晶尺寸，发现包含La ^3+时有波动的趋势阳离子。X射线衍射图谱证实，除了x = 0.060的浓度以外，用La ³⁺阳离子取代后，晶格常数和晶胞体积也发生了收缩。晶格常数是8.34埃〜8.41埃的范围内，而单位体积电池在580埃的范围内³ -596埃³。所有样品的电阻率是通过使用两种探针IV技术计算得出的。最大电阻率约为81.129×10 ⁵ 在723 K处x的浓度为0.060时，发现Ωcm，这使其可用于高频头应用。发现电阻率和漂移迁移率彼此成反比。利用傅里叶变换红外光谱技术分析了低频吸收带与高频吸收带的反比关系。