In this study, Ba_0.5Zn_0.2Co_0.3Fe_12-yLa_yO₁₉ (y = 0, 0.1, 0.2, 0.3, 0.4, 0.5) nano-hexaferrites were prepared through the co-precipitation route. The synthesized powder was sintered at 1100 °C for 6 h to assist the crystallization process. The formation of single-phase hexagonal structure was confirmed by XRD. The size of prepared crystals of nano-hexaferrites was estimated in the range of 12.5–28.1 nm. The FTIR spectra also confirmed the formation of M-type hexagonal phase with the characteristic band of hexagonal structure observed at about 560 cm⁻¹. The current voltage measurements were performed to study the electrical nature of prepared samples in the temperature range 300–900 K. At room temperature, the highest values 2 × 10¹¹ Ω cm and 0.5 eV of electrical resistivity and activation energy, respectively, are found for the sample with La concentration y = 0.2. The enhanced dc electrical resistivity due to La substitution shows that the synthesized hexaferrites are efficient to reduce the eddy current losses for device fabrication in the high-frequency range.

在这项研究中， 通过共沉淀途径制备了Ba _0.5 Zn _0.2 Co _0.3 Fe _{12- y} La _y O ₁₉（y = 0、0.1、0.2、0.3、0.4、0.5）纳米六方铁氧体。合成的粉末在1100°C下烧结6 h以辅助结晶过程。通过XRD确认单相六边形结构的形成。制备的纳米六价铁氧体晶体的大小估计在12.5-28.1 nm范围内。FTIR光谱还证实了在约560cm ^-1处观察到具有六方结构的特征带的M型六方相的形成。。进行电流电压测量结果来300-900 K.在室温下研究制备的样品的电性质的温度范围内，最高的值2×10 ¹¹  Ωcm且电阻率和活化能为0.5eV，分别被发现对于La浓度y  = 0.2的样品。由于La取代而提高的直流电阻率表明，合成的六价铁氧体可有效减少高频范围内器件制造中的涡流损耗。