摘要
采用传统的陶瓷工艺制备贫铁MnZn铁氧体材料Mn0.61Zn0.41Ti0.02Fe1.96O4,并采用流延工艺制备出厚度为100~150μm的贫铁MnZn铁氧体薄片。研究了贫铁MnZn铁氧体材料的微观形貌和晶相结构,测试了贫铁MnZn铁氧体材料的磁性能。研究表明,贫铁Mn Zn铁氧体在低频区域的磁性能与富铁MnZn铁氧体相当,并在13.56 MHz的高频区域仍保持了较高的磁导率。通过运用仿真软件CST模拟NFC（近场通信）天线的场强分布并根据可读写距离测试了铁氧体薄片的屏蔽能力,讨论了贫铁MnZn铁氧体材料同时运用于无线充电及近场通信的可行性。
Fe-poor MnZn ferrites Mn0.61Zn0.41Ti0.02Fe1.96O4 were prepared by conventional ceramics preparation technique, and ferrite sheets with the thickness of 100-150 μm were shaped by tape casting process. The microstructure and crystal phase of ferrite sheets were detected by SEM and XRD, respectively. The magnetic properties were tested. It is shown that the magnetic properties of Fe-poor ferrite sheets are similar to those of Fe-rich ferrite sheets at lower frequency region used for wireless charging, and the Fe-poor ferrite sheats maintain a high magnetic permeability at 13.56 MHz as well, suggesting its potential application in NFC. Simulation software CST was employed to simulate field intensity distribution for NFC antenna and read/write distance was measured as an evidence of shielding ability. The possibility for applying MnZn ferrites with Fe-poor composition to wireless charging and NFC was discussed.
出处
《电子元件与材料》
CAS
CSCD
2015年第5期38-41,共4页
Electronic Components And Materials
