The permeability and electrical resistivity of barium hexaferrite magnetic materials can be used in various products such as magnetic recording media, computers, electronic devices, materials for permanent magnets, and communication devices. This work focuses on the synthesis of rare earth lanthanum (La³⁺)-doped manganese in barium hexaferrite (Ba_1−xLa_xMn_yFe_12−yO₁₉) (x = 0.02–0.10 and y = 0.02–0.10) prepared by using the coprecipitation method. The intensity peak is increased with increasing the concentration of lanthanum, which shows the enhancement in the degree of crystallinity and increase in the size of crystallite. The band gap energy decreased gradually with the increase of concentration of lanthanum. The micrographs observed that the material is basically made up of some rings or rods such as particles in pure La-Ma in barium hexaferrite. The agglomeration was observed because of heat behavior at 600°C or may be concentration effect. The structural studies are done using X-ray diffraction, UV, FT-IR, and SEM techniques.

中文翻译：

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不同取代条件下掺镧锰钡六方铁氧体光学性质的增强

六价铁酸钡磁性材料的磁导率和电阻率可用于各种产品中，例如磁记录介质，计算机，电子设备，用于永磁体的材料和通信设备。此工作的重点是稀土镧（La的合成³⁺）掺杂在锰钡铁氧体（BA _{1- X}的La _X锰_ý的Fe _{12- ý} Ô ₁₉）（X  = 0.02-0.10和ÿ = 0.02–0.10）使用共沉淀法制备。强度峰值随镧浓度的增加而增加，这表明结晶度的增强和晶粒尺寸的增加。随着镧浓度的增加，带隙能量逐渐减小。显微照片观察到，该材料基本上由一些环或杆组成，例如六铁酸钡中纯La-Ma中的颗粒。观察到结块是由于在600°C下的热行为，或者可能是集中效应。使用X射线衍射，UV，FT-IR和SEM技术进行结构研究。