20 Gigahertz Noise Suppressor Based on Ferromagnetic Nanowire Arrays

摘要：

The noise suppressors based on ferromagnetic nanowire arrays were fabricated on the anodic aluminum oxide templates (AAO), and the effects of the width and length of the device and the type of the ferromagnetic nanowire array on the microwave properties of the noise suppressor were investigated. The Co and Co-Ni magnetic nanowires with an average diameter of 200 nm and a length of 10 or 30 μm were electrodeposited in the AAO templates, and the ultrasonic vibration was utilized to promote ionic diffusion and to allow hydrogen to escape easily from the cathode. Scanning electron microscope images showed uniform ferromagnetic nanowires and the hysteresis loops demonstrated that these nanowire arrays had a strong magnetic anisotropy. The resonance frequency of S21 of the noise suppressors reached 25 GHz, indicating that the working frequency of the devices was beyond 20 GHz. The synthetic method of the ferromagnetic nanowires and the fabrication processes of the devices in this work could be applied to other microwave devices such as isolators and circulators.

关键词： noise suppressor S-parameter ferromagnetic nanowires

作者: Yanqiu Li Zheng Chen Liangliang Li James Cai

作者单位: Department of Materials Science and Engineering, Key Laboratory of Advanced Materials, Tsinghua Univ Institute of Microelectronics, Tsinghua University, Beijing, 100084, Peoples Republic of China

会议类型: 国际会议

会议名称: 2011 International Symposium on Advanced Packaging Materials(2011年先进电子封装材料国际会议APM)

会议地点: 厦门

会议语种:英文

页码: 94-98

在线出版日期: 2011-10-25（万方平台首次上网日期，不代表论文的发表时间）