纳米级铋-钇铁柘榴石粉末的合成与烧结块材的铁磁共振性质  

Preparation and Microwave Properties of Nanosize Bismuth-doped Yttrium Iron Garnet

作　　者：傅彦培 郑智文 洪东兴[2] 林正雄[3] 姚永德 

机构地区：[1]东华大学材料科学与工程系,台湾花莲97401 [2]铭传大学计算机与通讯工程系 [3]吴凤技术学院化学工程系 [4]中央研究院物理研究所

出　　处：《过程工程学报》2006年第z2期338-341,共4页The Chinese Journal of Process Engineering

摘　　要：以共沉淀法制备了纳米级铋-钇铁柘榴石粉末,并压锭成块材进行微波测试,因钇铁柘榴石块材烧结温度>1400℃,无法顺利导入低温多层共烧陶瓷制程(LTCC),本研究以掺杂铋元素进入柘榴石晶体内的方式,使块材烧结温度大幅下降,同时不降低其在微波应用上的性质.实验结果显示,随着掺杂铋元素的增加,块材的烧结温度最大可降至850℃,而微波应用于滤波器的亚铁磁共振(Ferrimagnetic magnetic resonance)特性在测量后证实并未遭受破坏.Bismuth-doped yttrium iron garnet nano-powder by co-precipitation method is prepared in this study,and bismuth-doped yttrium iron garnet bulk is sintered to measure microwave properties.In general,the sintering temperature of yttrium iron garnet is over 1400 ℃ which can not be applied in low temperature co-fired ceramics substrates.Doped bismuth into yttrium iron garnet crystal can decrease the sintering temperature,and it does not affect the microwave properties in microwave region.The result shows that the sintering temperature can be significantly decreased to 850℃ at Bi1.25Y1.75Fe5O12.

关 键 词：钇铁柘榴石 亚铁磁共振 共沉淀法 

分 类 号：TQ533[化学工程—煤化学工程]