Effect of heat treatment on microwave absorbing properties of Ni0.5Zn0.4Mg0.1La0.01Fei1.99O4 ferrite

摘要：

Spinel structure Ni0.5Zn0.4Mg0.1La0.01Fe1.99O4 ferrite has been prepared by sol-gel route and investigated as a radar absorbing material (RAM). The ferrite exhibits a single-spinel structure. The average crystallite sizes of the ferrite are in the range of 20-26nm. The microwave-absorbing properties are studied as a function of frequency, annealing temperature, and thickness of absorber. The reflection loss varies with the change of annealing temperature by calculating the microwave absorption as a single-layer absorber. The ferrite annealed at 850℃ shows minimum reflection loss. The results indicate that Ni0.5Zn0.4Mg0.1La0.01Fe1.99O4 ferrite annealed at 850C is suitable for microwave absorbing materials.

关键词： sol-gel magnetic materials heat treatment

作者: Yi Liu Shicheng Wei Binshi Xu Yujiang Wang Haoliang Tian Hui Tong

作者单位: National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China

会议类型: 国际会议

会议名称: International Federation for Heat Treatment and Surface Engineering Congress 2012 第20届国际热处理及表面工程联合会 20th IFHTSE

会议地点: 北京

会议语种:英文

页码: 209-211

在线出版日期: 2012-10-23（万方平台首次上网日期，不代表论文的发表时间）