Effects of Co2O3 concentration on high Q-factor NiCuZn ferrites for 13.56 MHz radio identification communication
Effects of Co2O3 concentration on high Q-factor NiCuZn ferrites for 13.56 MHz radio identification communication
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DOI：
10.1016/j.ceramint.2016.05.187
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发表时间：
2016-09
影响因子：
5.2
通讯作者：
Hongxing Yang;Hua Su;Xiaoli Tang;Huaiwu Zhang;B. Liu;Y. Jing
中科院分区：
文献类型：
--
作者：
Hongxing Yang;Hua Su;Xiaoli Tang;Huaiwu Zhang;B. Liu;Y. Jing
Co2O3-doped NiCuZn ferrites with a high (group A) or low (group B) permeability were prepared using the conventional ceramic method to obtain highQ-factor NiCuZn ferrites for a 13.56 MHz near-field-communication (NFC) system. The XRD patterns of samples from both groups exhibited single spinel phase. Permeability monotonously decreased with increasing Co2O3content, whereas sintering density and saturation magnetic flux density (Bs) slightly changed with Co2O3content. The permeability of 0.45 wt% Co2O3-doped ferrite (A0.45) was similar to that of 0.10 wt% Co2O3-doped ferrite (B0.10). However, the former sample presented a considerably higherQ-factor than the latter sample. The former sample also presented enhanced stability variation ofQ-factor with frequency, which indicated an improved electromagnetic shielding function for the NFC system. The mechanisms involved were also elucidated.
