Abstract Interfacial coupling in heterostructures of spinel-perovskite nanocomposites, primarily controls the performance of the multiferroic samples, especially in such type of binary structure systems. The interfacial response in this class of composites is a key feature to enhance the magnetoelectric response of the materials. For this purpose, here we synthesized a series of 0.5BiFeO3−0.5Ni0.5Co0.5Fe2O4 by substituting Zn at Co-site in spinel phase, using a facile wet chemical technique. The structural analysis carried out using X-ray diffraction revealed the presence of both the phases. Spherical type agglomerated grains with sharp and distinct grain boundaries were exposed by field emission scanning electron microscopy. Elemental profile was mapped by energy dispersive X-ray spectroscopy to confirm the stoichiometric composition of these composites. Improvement in saturation magnetization and remanence with increasing substitution contents was analyzed via vibrating sample magnetometer. In addition, the ferroelectric investigations were carried out to calculate the recoverable energy and energy loss density. Magneto-polarizability investigations uncovered the potential of these composites for multi-state device applications.

中文翻译：

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异质结构尖晶石-钙钛矿多铁复合材料中应变介导引起的磁电耦合

摘要 尖晶石-钙钛矿纳米复合材料异质结构中的界面耦合主要控制多铁性样品的性能，尤其是在此类二元结构系统中。这类复合材料的界面响应是增强材料磁电响应的关键特征。为此，我们在这里使用简便的湿化学技术，通过在尖晶石相的 Co 位点取代 Zn，合成了一系列 0.5BiFeO3−0.5Ni0.5Co0.5Fe2O4。使用 X 射线衍射进行的结构分析揭示了两种相的存在。通过场发射扫描电子显微镜暴露出具有尖锐和明显晶界的球形团聚颗粒。通过能量色散 X 射线光谱绘制元素分布图，以确认这些复合材料的化学计量组成。通过振动样品磁强计分析了饱和磁化强度和剩磁随着置换含量的增加而改善。此外，还进行了铁电研究以计算可回收能量和能量损失密度。磁极化率研究揭示了这些复合材料在多态设备应用中的潜力。