The (1-x)Ba(Zr_0.25Ti_0.75)O₃-xSr(Fe_0.5Nb_0.5)O₃ or (1-x)BZT-xSFN ceramics have been fabricated via a solid-state reaction technique. All ceramics exhibit a pure phase perovskite with cubic symmetry. The addition of a small amount of SFN (x = 0.1) produces an obvious change in dielectric behavior. Very high dielectric constants (ε_r > 164,000 at 1 kHz and temperature > 150°C) are observed and the value is obviously higher than dielectric constants for Ba(Zr_0.25Ti_0.75)O₃ and Sr(Fe_0.5Nb_0.5)O₃ ceramics. The ferroelectric measurement data suggests that the unmodified sample exhibited a ferroelectric behavior. However, a transformation from a ferroelectric to a relaxor-like behavior is noted with increasing x concentration. Impedance Spectroscopy (IS) analysis indicates that the presence of excellent dielectric constants is due to the heterogeneous conduction in the ceramics after adding SFN, which can be explained in terms of the Maxwell-Wagner polarization mechanism.

（1- x）Ba（Zr _0.25 Ti _0.75）O ₃ - x Sr（Fe _0.5 Nb _0.5）O ₃或（1- x）BZT- x SFN陶瓷是通过固态反应技术制备的。所有陶瓷均表现出具有立方对称性的纯相钙钛矿。添加少量的SFN（x  = 0.1）会导致介电性能发生明显变化。非常高的介电常数（ε _{- [R}  > 164000在1kHz和温度> 150℃），观察到该值明显高于Ba的（Zr的介电常数_0.25的Ti _0.75）O₃和Sr（Fe _0.5 Nb _0.5）O ₃陶瓷。铁电测量数据表明未改性的样品表现出铁电行为。然而，随着x浓度的增加，注意到从铁电到类似弛豫的行为的转变。阻抗谱（IS）分析表明，优异的介电常数的存在是由于添加SFN后陶瓷中的异相传导，可以用麦克斯韦-瓦格纳极化机理来解释。