The present studies have mainly been focused on the development (synthesis and characterization) of eco-friendly co-substituted (Ni, Ti) bismuth ferrite (referred as BFO) multiferroic of a composition Bi(Ni_0.35Ti_0.35Fe_0.30)O₃. The structural and morphological features of the ceramic technology prepared material were first examined by powder X-ray diffraction and field-emission scanning electron microscopy (FE-SEM) techniques. It is found that the Fe-site co-substitution has created deformation in structure of BFO from rhombohedral to orthorhombic symmetry. Their crystallite size was estimated by the Scherrer’s technique and found to be in the range of 20–49 nm. Detailed analysis of the FE-SEM micrograph and EDX (energy-dispersive X-rays) spectrum has shown the (i) uniform distribution of grains of varying size and (ii) elemental content and composition of the Bi(Ni_0.35Ti_0.35Fe_0.30)O₃ compound. Studies of the dielectric-impedance spectroscopy and transport parameters, obtained in a broad range of temperatures (298–773 K) and frequency (1 kHz–1 MHz), have provided many important data and mechanism, such as dielectric dispersion at high temperature, conduction mechanism, transport properties, non-Debye type of relaxation processes and negative temperature coefficient behavior of resistance (NTCR) of the studied material. The polarization vs. electric field (hysteresis loop) analysis exhibits that the magnitude of polarization increases with the increase of applied electric field. The magnetic measurement shows the change in ferromagnetic properties which may be due to the observed high remanent magnetization and coercive field. Thus, prepared material with modified multiferroic features may lead to numerous applications in the field of transducers, sensors and electronic industry.

目前的研究主要集中在开发（合成和表征）生态友好的共取代（Ni，Ti）铋铁氧体（称为 BFO）多铁性，其组成为 Bi(Ni _0.35 Ti _0.35 Fe _0.30 )O ₃. 首先通过粉末 X 射线衍射和场发射扫描电子显微镜 (FE-SEM) 技术检查陶瓷技术制备的材料的结构和形态特征。发现 Fe 位共取代使 BFO 的结构从菱形对称到正交对称变形。它们的微晶尺寸通过 Scherrer 技术估计，发现在 20-49 nm 的范围内。FE-SEM 显微照片和 EDX（能量色散 X 射线）光谱的详细分析表明 (i) 不同尺寸晶粒的均匀分布和 (ii) Bi(Ni _0.35 Ti _0.35 Fe _0.30 ) 的元素含量和组成)O ₃化合物。在广泛的温度 (298–773 K) 和频率 (1 kHz–1 MHz) 下获得的介电阻抗谱和传输参数的研究提供了许多重要的数据和机制，例如高温下的介电色散、所研究材料的传导机制、传输特性、非德拜型弛豫过程和电阻的负温度系数行为 (NTCR)。极化与电场（磁滞回线）分析表明，极化的幅度随着外加电场的增加而增加。磁性测量显示铁磁特性的变化，这可能是由于观察到的高剩磁和矫顽场所致。因此，