纳米ZnO的制备及其微波介电性能  

Preparation of Nano-ZnO and Its Microwave Dielectric Properties

作　　者：张玲[1] 罗发[1] 周万城[1] 朱冬梅[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《稀有金属材料与工程》2007年第A02期117-119,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目资助(903050169)

摘　　要：用均匀沉淀法合成纳米ZnO粉体。经XRD和SEM分析表明产物为纤锌矿结构,呈球状或类球状。对所得粉体进行高温热处理。分析结果表明:热处理温度达600℃时,ZnO粉体颗粒小且分布均匀,平均粒径26 nm。对所得产物在8.2～12.4 GHz范围进行电磁参数的测量,表明:纳米ZnO粉体磁损耗很小,属于介电损耗材料,600℃热处理后,粉体与石蜡组成的复合体不仅具有良好的频响特性,且介电常数实、虚部和损耗值都较大。Zinc oxide precursors was synthesized by uniform precipitation-method from Zn（NO3）2 and carbamide. XRD and SEM analysis show that the structure of nanometer zinc oxide particles is global or similar one. The ZnO particles were 26nm when the heat treatment temperatures get to 600 ℃. The dielectric and magnetic constants of the products were studied by using the waveguide method of electromagnetic characteristics. The results indicated that at 600 ℃, compounds of the ZnO powders and paraffin not only have good frequency dependence characteristic, but also the real part, the imaginary part and the loss value of them are fairly high.

关 键 词：均匀沉淀法 纳米氧化锌 微波介电性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]