TY - JOUR
T1 - Enhanced electromagnetic properties and microwave attenuation of BiFeO3-BaFe7(MnTi)2.5O19 driven by multi-relaxation and strong ferromagnetic resonance
AU - Li, Yong
AU - Cao, Maosheng
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/11/15
Y1 - 2016/11/15
N2 - We report the original observation of the electromagnetic properties and microwave attenuation performances of BiFeO3-BaFe7(MnTi)2.5O19 composites in X-band. It is found that the permittivity of BiFeO3-BaFe7(MnTi)2.5O19 shows dielectric multi-relaxation behavior, which plays an important role in maintaining the high dielectric loss. Meanwhile, BiFeO3-BaFe7(MnTi)2.5O19 exhibits increased magnetic loss due to strong ferromagnetic resonance. For all BiFeO3-BaFe7(MnTi)2.5O19 composites, the minimum reflection loss surpasses − 20 dB. Especially, the minimum reflection loss of the composites with volume ratio of 2:1 and 3:1 reaches − 50 dB, which is almost 3 times of that of BiFeO3. The enhanced microwave attenuation is attributed to the improved electromagnetic properties and electromagnetic matching. This work opens up a promising feasible route to development of microwave attenuation materials in imaging, healthcare, information safety and military fields.
AB - We report the original observation of the electromagnetic properties and microwave attenuation performances of BiFeO3-BaFe7(MnTi)2.5O19 composites in X-band. It is found that the permittivity of BiFeO3-BaFe7(MnTi)2.5O19 shows dielectric multi-relaxation behavior, which plays an important role in maintaining the high dielectric loss. Meanwhile, BiFeO3-BaFe7(MnTi)2.5O19 exhibits increased magnetic loss due to strong ferromagnetic resonance. For all BiFeO3-BaFe7(MnTi)2.5O19 composites, the minimum reflection loss surpasses − 20 dB. Especially, the minimum reflection loss of the composites with volume ratio of 2:1 and 3:1 reaches − 50 dB, which is almost 3 times of that of BiFeO3. The enhanced microwave attenuation is attributed to the improved electromagnetic properties and electromagnetic matching. This work opens up a promising feasible route to development of microwave attenuation materials in imaging, healthcare, information safety and military fields.
KW - BaFe(MnTi)O
KW - BiFeO
KW - Electromagnetic properties
KW - Ferromagnetic resonance
KW - Microwave attenuation
KW - Multi-relaxation
UR - http://www.scopus.com/inward/record.url?scp=84979885666&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2016.07.119
DO - 10.1016/j.matdes.2016.07.119
M3 - Article
AN - SCOPUS:84979885666
SN - 0264-1275
VL - 110
SP - 99
EP - 104
JO - Materials and Design
JF - Materials and Design
ER -