Scandium (Sc) modified barium iron niobates (i.e., Ba(Fe_0.5-x Sc_xNb_0.5)O₃ (x = 0.03,0.05 and 0.07) (BFSN)) were synthesized by using a standard ceramic technology (i.e., high-temperature solid-state reaction of mixed oxide route). The analysis of room temperature X-ray diffraction data shows the monoclinic phase of the materials. The dielectric and impedance parameters were measured in different temperature (25⁰C–500 °C) and frequency (1 kHz-1 MHz) ranges. Detailed study of temperature dependent dielectric constant shows the two anomalies; one may be related to the ferroelectric to paraelectric phase transition at about 249 °C and another at about 368 °C may be due to some extrinsic effects (due to creation of oxygen vacancies for variable oxidation states). The grains and grain boundary contributions in resistive and capacitive characteristics, temperature activated polarization mechanisms are analysed. The Leakage (J ~ E) characteristics illuminate the bulk (ohms due to hopping of charge carriers and, space charge limited) conduction processes of the samples. With the increase in scandium, diffusivity decreases in BFSN compounds.

using（Sc）改性的铌铁钡酸盐（即Ba（Fe _0.5-x Sc _x Nb _0.5）O ₃（x = 0.03,0.05和0.07）（BFSN））是使用标准陶瓷技术（例如，固相反应的混合氧化物路线）。室温X射线衍射数据的分析显示了材料的单斜晶相。在不同温度下测量介电常数和阻抗参数（25 ⁰C–500°C）和频率（1 kHz-1 MHz）范围。对温度相关介电常数的详细研究显示了这两个异常。一个可能与约249°C的铁电至顺电相变有关，另一个可能与约368°C的归因于某些外在效应（由于可变氧化态产生了氧空位）。分析了晶粒和晶界在电阻和电容特性中的作用，分析了温度激活的极化机理。泄漏（J〜E）特性照亮了样品的体积（由于电荷载流子的跳跃和空间电荷的限制而导致的欧姆）导电过程。随着scan的增加，BFSN化合物的扩散率降低。