Barium hexaferrite BaFe₁₂O₁₉ (BHF) ceramic was synthesized by chemical route on sintering at 1050 °C for 12 h. The synthesized material was characterized by XRD, SEM, AFM and TEM analysis. Metal oxide stretching frequencies corresponding to Fe-O, Ba-O, and Fe-O-Fe bands are confirmed by FTIR studies. The hexagonal nature of the BHF ceramic was confirmed by TEM analysis and Rietveld refinement with space group P6₃/mmc. The particle size observed by TEM is 175 nm. The root means square and average roughness were found to be 61.048 nm and 44.025 nm respectively. The M-T and M-H hysteresis loop indicates temperature dependent ferromagnetic behavior of BHF ceramic. The temperature and frequency dependent dielectric properties were explained by Maxwell-Wagner theory. The value of dielectric constant (ε′) for BHF ceramic was found to be 22× 10³ at 100 Hz and 483 K.

通过化学途径在1050℃下烧结12h，合成了六铁酸钡BaFe ₁₂ O ₁₉（BHF）陶瓷。通过XRD，SEM，AFM和TEM分析对合成材料进行表征。通过FTIR研究证实了对应于Fe-O，Ba-O和Fe-O-Fe带的金属氧化物拉伸频率。通过TEM分析和空间群P6 _3的Rietveld细化证实了BHF陶瓷的六方性/ mmc。通过TEM观察的粒径为175nm。均方根和平均粗糙度分别为61.048 nm和44.025 nm。MT和MH磁滞回线表示BHF陶瓷的温度依赖性铁磁行为。麦克斯韦-瓦格纳理论解释了温度和频率相关的介电特性。发现BHF陶瓷的介电常数（ε ′）在100 Hz和483 K时为22×10 ³。