| 高磁性能SrFe_(12-x)Cr_xO_(19)铁氧体制备和表征 |
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| 引用本文： | 黄风,刘先松,冯双久,张战军,黄鑫,马玉启.高磁性能SrFe_(12-x)Cr_xO_(19)铁氧体制备和表征[J].磁性材料及器件,2015(1). |
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| 作者姓名： | 黄风 刘先松 冯双久 张战军 黄鑫 马玉启 |
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| 作者单位： | 安徽大学 物理与材料科学学院,安徽合肥,230601 |
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| 基金项目： | 国家自然科学基金资助项目(51072002；51272003)；安徽省教育厅重点科研项目( KJ2010A008;KJ2012A027)；2013年度安徽省级自然科学研究资助项目 |
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| 摘 要： | 用传统陶瓷工艺制备了M型Sr Fe12-xCrxO19(x=0~0.6)铁氧体,利用X射线衍射、扫描电子显微镜和B-H分析仪对样品的结构与磁性能进行了表征。研究了铬含量、烧结温度和复合添加剂对磁体性能的影响。结果表明,适量的铬取代和复合添加可以提高锶铁氧体的综合磁性能;当x=0.2时,在相对低的温度(1135~1165℃)烧结,其磁性能达到TDK的FB6H性能水平。其中,最佳磁性能可达到Br=401.7m T、Hcb=300.5k A/m、Hcj=353.1k A/m和(BH)max=31.4k J/m3。
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| 关 键 词： | M型锶铁氧体 Cr取代 添加剂 磁性能 |
Preparation and characterization of SrFe12-xCrxO19 ferrite with high magnetic performance |
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| HUANG Feng,LIU Xian-song,FENG Shuang-jiu,ZHANG Zhan-jun,HUANG Xin,MA Yu-qi.Preparation and characterization of SrFe12-xCrxO19 ferrite with high magnetic performance[J].Journal of Magnetic Materials and Devices,2015(1). |
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| Authors: | HUANG Feng LIU Xian-song FENG Shuang-jiu ZHANG Zhan-jun HUANG Xin MA Yu-qi |
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| Abstract: | M-type SrFe12-xCrxO19 (x=0-0.6) ferrite were prepared by conventional ceramic process. The samples were characterized by means of X-ray diffractometer (XRD), scanning electron microscopy (SEM) and B-H hysteresis curve measurements. The influences of chromium content, sintering temperature and compound additives on magnetic properties were investigated. Measurements show that suitable Cr3+doping and using compound additives can improve magnetic properties of the samples. With x=0.2, the magnetic properties have reached the level of TDK FB6H at sintering temperature of 1135 to 1165℃, in which optimal properties reach the value of Br=401.7mT, Hcb=300.5kA/m, Hcj=353.1kA/m and (BH)max=31.4 kJ/m3. |
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| Keywords: | M-type strontium ferrite Cr substitution dopant magnetic properties |
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