Ba_(3-x)Y_xCo_2Fe_(24)O_(41)铁氧体的制备与吸波性能研究  

Manufacture of Hexaferrite Ba_(3-x)Y_xCo_2Fe_(24)O_(41) and Research on Its Microwave Absorption Properties

作　　者：杜敏生[1] 李国栋[1] 张常在[1] 

机构地区：[1]内蒙古大学物理科学与技术学院,呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2008年第3期332-336,共5页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50164003)

摘　　要：采用溶胶-凝胶法制备了掺杂钇的磁铅石型系列Z型钡铁氧体纳米颗粒.通过对相结构的分析表明:B a3-xYxCo2F e24O41(x=0,0.1,0.2,0.3,0.4)样品在1300℃下烧结5 h后成相主要为Z型钡铁氧体,同时伴有少量W型、Y型杂相.还对添加稀土钇及间隔一段时间后吸波性能的变化进行了研究,结果表明,掺杂适量的稀土钇(x=0.1)在微波X波段平均吸波性能达到最大,抗氧化能力也明显增强,过量或少量掺杂钇都会影响材料的吸波性能及抗氧化能力.Nano-particles Ba3-xYxCo2Fe24O41 （x= 0, 0. 1,0. 2, 0. 3,0. 4） of Z-type hexaferrite doped with yttrium were synthesized by the citrate acid sol-gel method. The microwave absorption material of Z-type with fewer hybrid phases of types Y and W were obtained at 1 300 ℃ when the material was fired within 5 hours. Furthermore,the absorption property and its change of the doped samples were studied after a period of time. It was shown that adding proper yttrium of rare earth （x=0.1） can increase the absorbtion properties of the samples. At the same time,the ability of antioxidation was strengthened. The absorption property and anti-oxidation ability can be weakened whenever adding less or much yttrium.

关 键 词：溶胶-凝胶法 稀土钇 钡铁氧体 吸波性能 

分 类 号：TM277.1[一般工业技术—材料科学与工程]