TY - JOUR
T1 - Optimization of electromagnetic matching of Ba1-xCaxFe11.4Co0.6O19 (0.2 ≤ x ≤ 0.8) ceramics for microwave absorption within 2.6–18 GHz
AU - Feng, Gangli
AU - Zhou, Wancheng
AU - Li, Yiwen
AU - Luo, Fa
AU - Zhu, Dongmei
AU - Huang, Zhibin
AU - Zhou, Yingying
AU - Qing, Yuchang
N1 - Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/6/15
Y1 - 2020/6/15
N2 - The Ba1-xCaxFe11.4Co0.6O19 (x = 0.0, 0.2, 0.4, 0.6, and 0.8) composites with wide-bandwidth and good absorption performance were prepared. The MS of ceramics increases from about 62.4 to 83.4 emu g−1 as x rises from 0 to 0.6, which demonstrates that the desirable magnetic properties of such ceramics is obtained by adjusting the content of Ca2+. A bandwidth of reflection loss (RL) below - 5 dB can be obtained for frequencies from 5.9 to 18 GHz with the Ba0.4Ca0.6Fe11.4Co0.6O19 ceramic and a thickness of 2.0 mm, and a larger RL value of −34.1 dB is observed at 8.2 GHz for the Ba0.6Ca0.4Fe11.4Co0.6O19 ceramic. These results suggest the developed ceramics could act as effective and wide-bandwidth microwave absorbing materials to meet commercial and military applications.
AB - The Ba1-xCaxFe11.4Co0.6O19 (x = 0.0, 0.2, 0.4, 0.6, and 0.8) composites with wide-bandwidth and good absorption performance were prepared. The MS of ceramics increases from about 62.4 to 83.4 emu g−1 as x rises from 0 to 0.6, which demonstrates that the desirable magnetic properties of such ceramics is obtained by adjusting the content of Ca2+. A bandwidth of reflection loss (RL) below - 5 dB can be obtained for frequencies from 5.9 to 18 GHz with the Ba0.4Ca0.6Fe11.4Co0.6O19 ceramic and a thickness of 2.0 mm, and a larger RL value of −34.1 dB is observed at 8.2 GHz for the Ba0.6Ca0.4Fe11.4Co0.6O19 ceramic. These results suggest the developed ceramics could act as effective and wide-bandwidth microwave absorbing materials to meet commercial and military applications.
KW - Calcium-based substitution
KW - Microwave absorption
KW - Reflection loss
KW - Wide-bandwidth absorption
UR - http://www.scopus.com/inward/record.url?scp=85083903206&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2020.02.082
DO - 10.1016/j.ceramint.2020.02.082
M3 - 文章
AN - SCOPUS:85083903206
SN - 0272-8842
VL - 46
SP - 13102
EP - 13106
JO - Ceramics International
JF - Ceramics International
IS - 9
ER -