We are examining the behavior of a composite made of ferroelectrics with strong dielectric properties and ferrites with magnetic properties due to the rising need for materials for multipurpose devices. Many application avenues will be favored by the pairing of these materials’ individual qualities with one another. Perovskite and U-type hexaferrite composite materials have been chosen for this study based on their magnetic and dielectric properties. The composites, (1?x) PLT?x(Ba1?3xNd₂x)₄Co₂Fe36O60 where x = 0.52, 0.54, 0.56, 0.58 are prepared by solid state reaction method and phase formation was examined. Consideration has been given to the magnetic, dielectric, and magneto-dielectric properties. This work has established the link between the electric and magnetic domains while applying electric and magnetic forces to the materials. The magneto-dielectric research revealed magneto-electric coupling in all of the samples. However, the sample shows the maximum coupling for x = 0.54 with MDR% values of 93.17%, which might be because this sample appears to have a high magneto-resistance (161%).

六角铁氧体由于其具备高温下的低场磁电耦合特性, 有望应用于新型多态存储器及磁电传感器等微电子器件。利用Ti ⁴⁺离子对M型六角铁氧体BaFe₁₂O₁₉进行B位掺杂, 不仅可以调控材料的磁结构和磁学特性, 同时, Ti离子在六角铁氧体B位的不等价掺杂还可以产生相关缺陷、载流子和变价Fe离子进而改变其电学特性。本研究采用固相烧结法制备了M型六角铁氧体BaFe_12-xTi_xO₁₉ (x=0, 0.5, 1, 1.5)陶瓷, 并对其进行了性能表征和测试, 研究了B位Ti ⁴⁺掺杂对材料结构、磁学和介电特性的影响。研究结果表明, BaFe_12-xTi_xO₁₉呈现上、下自旋反平行的亚铁磁序。当Ti ⁴⁺离子掺杂量较低时, 更易取代位于上自旋格子的Fe ³⁺离子, 其磁化强度随Ti掺杂量的增加而减小; 随着Ti ⁴⁺离子掺杂量的进一步增加, 位于下自旋格子的Fe ³⁺离子也会逐渐被取代, 此时, 饱和磁化强度随掺杂量的增加而增加。此外, Ti ⁴⁺离子的引入也会使晶粒内部呈现半导性, 在晶粒/晶界处产生Maxwell-Wagner界面极化, 故而M型六角铁氧体BaFe_12-xTi_xO₁₉陶瓷会出现明显的低频介电增强并伴随着Maxwell-Wagner介电弛豫。