锶铁氧体稳定悬浮液的制备及电泳沉积  

Preparation of stabilized strontium ferrite suspension and electrophoretic deposition

作　　者：李军科[1] 彭斌[1] 王渊朝[1] 张万里[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,成都610054

出　　处：《功能材料》2014年第10期138-142,共5页Journal of Functional Materials

基　　金：国防预研资助项目(51312060403);国防预研基金资助项目(9140A12020311DZ0202);教育部支撑计划资助项目(62501036015)

摘　　要：通过添加表面活性剂十二烷基苯磺酸(DBSA)包覆锶铁氧体,在1-丁醇中制备了稳定的悬浮液并成功进行电泳沉积锶铁氧体膜。利用zeta电位仪分析了悬浮液的稳定性,利用红外光谱分析仪(FT-IR)分析了DBSA对锶铁氧体的包覆情况,利用X射线分析仪(XRD)分析了膜的组分,利用场发射扫描电子显微镜(FESEM)获得了膜的显微形貌和膜厚,利用振动样品磁强计(VSM)测试了膜的磁性能,结果表明,由DBSA包覆锶铁氧体在1-丁醇中的zeta电位为87mV,沉积膜厚9.44μm,矫顽力为366.16kA/m,饱和磁化强度为42A·m2/kg,剩磁比为0.56。利用该方法制备的膜可用于微波环行器、隔离器等微波非互易器件的制备。In this paper we prepared of stable strontium ferrite suspensions.The stability of the magnetic stron-tium ferrite particles was increased by the addition of a surfactant dodecylbenzene sulfonic acid（DBSA）.The stable suspensions of the strontium ferrite particles were obtained in 1-butanol,and these were then used for a subsequent electrophoretic deposition.The stability of the suspension was analyzed by zeta potential measure-ments.The combination of DBSA with strontium ferrite was analyzed by infrared spectrum analyzer （FT-IR）. The structure of the film was analyzed by X-ray diffraction （XRD）.The morphology and thickness of the film were obtained by a field emission scanning electron microscope （FESEM）and the magnetic properties of the film were analyzed by a vibrating sample magnetometer （VSM）.The results showed that：electrophoresis dep-osition of strontium ferrite film was feasible.The zeta potential of the suspension in 1-butanol was 87 mV.The thickness of the film by electrophoretic deposition was 9.44μm.The coercivity was 366.16 kA/m,with the sat-uration magnetization 42 A·m2/kg and the remanence ratio 0.56.The film can be potentially applied in circula-tors and isolaters at microwave frequencies.

关 键 词：锶铁氧体薄膜 ZETA电位 电泳 

分 类 号：TQ174[化学工程—陶瓷工业]