当前位置: X-MOL 学术J. Electroceram. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Magnetic and dielectric studies of barium hexaferrite (BaFe12O19) ceramic synthesized by chemical route
Journal of Electroceramics ( IF 1.7 ) Pub Date : 2018-06-28 , DOI: 10.1007/s10832-018-0146-x
Atendra Kumar , Shiva Sundar Yadava , Pooja Gautam , Ankur Khare , K. D. Mandal

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.



中文翻译:

六价铁酸钡(BaFe12Ø19用化学方法合成的陶瓷

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

更新日期:2018-06-28
down
wechat
bug