| 纳米镍钴铁氧体空心微球的制备与性能 |
| Preparation and Properties of Nickel Substituted Cobalt Ferrite Hollow Microspheres |
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| 摘要: 以乙二醇为溶剂,氯化铁、氯化钴、氯化镍和醋酸铵为反应试剂,采用溶剂热法制备纳米NixCo1-xFe2O4(x=0、0.3、0.5、0.7、1)铁氧体空心微球,研究镍含量对铁氧体空心球的磁性与吸波性能的影响。借助X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、振动样品磁强计(VSM)和网络分析仪对试样的物相组成、微观形貌和电磁特性进行表征。结果表明制备的镍钴铁氧体为尖晶石结构,且形貌为空心球,粒径在200nm左右。当x=0时,镍钴铁氧体空心球饱和磁化强度最大为81.7emu·g-1,反射损耗在1658.8MHz有最小值为-16.9dB。 |
| 关键词: 铁氧体 空心球 溶剂热法 制备 电磁特性 |
| 基金项目: 国家自然科学基金(No.20871108,51272239)资助项目。 |
| Abstract: Nano-structure NixCo1-xFe2O4 (x=0, 0.3, 0.5, 0.7, 1) microspheres were synthesized in ethylene glycol (EG) solution, using FeCl3·6H2O, CoCl2·6H2O, NiCl2·H2O and NH4Ac as the starting materials through solvothermal method. The influence of the amount of Ni2+ on the magnetic and absorbing properties was studied. The structure, morphology, magnetic properties and wave absorbing properties of the products were characterized by XRD, SEM, TEM, Vibration sample magnetometer (VSM) and network vector analyzer. Results show that monodispersed NixCo1-xFe2O4 hollow microsphere ferrites are single-crystal cubic spinel structure with the average diameter of 200 nm． When x=0, the value of maximum saturation magnetization is 81.7 emu·g-1 and the reflection loss in 1 658.8 MHz has a minimum value of -16.9 dB. |
| Keywords: ferrite hollow spheres hydrothermal method preparation electromagnetic properties |
| 投稿时间：2015-06-07 修订日期：2015-09-24 |
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| 段红珍,陈国红,周芳灵,李巧玲,赵丽平.纳米镍钴铁氧体空心微球的制备与性能[J].无机化学学报,2015,31(11):2181-2187. |
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