| 微量Al3+掺杂对钴铁氧体结构与磁学性能的影响 |
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| 引用本文： | 郭瑞,汪长安,杨安坤,徐婷婷.微量Al3+掺杂对钴铁氧体结构与磁学性能的影响[J].稀有金属材料与工程,2011(Z1):379-382. |
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| 作者姓名： | 郭瑞 汪长安 杨安坤 徐婷婷 |
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| 作者单位： | 清华大学 |
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| 基金项目： | 自然科学基金创新研究群体(50921061) |
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| 摘 要： | 采用固相反应法制备CoFe2-xAlxO4(x=0,0.023,0.046,0.069,0.092)钴铁氧体系列样品,在1300℃氧气气氛下热处理后,采用X射线衍射仪(XRD)、物理性能测试系统(PPMS-9T)对样品的结构与磁性能进行了分析。结果表明,Al3+进入CoFe2O4晶格;本研究范围内微量的Al3+掺杂有助于促进CoFe2O4烧结致密化,微量的Al3+对CoFe2-xAlxO4样品的比饱和磁化强度没有损害,而样品的矫顽力略有降低。
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| 关 键 词： | 钴铁氧体 掺杂 氧化铝 磁滞回线 |
Influence of Doping Trace Aluminum on Structure and Magnetic Properties of Cobalt Ferrite |
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| Guo Rui, Wang Changan, Yang Ankun, Xu Tingting.Influence of Doping Trace Aluminum on Structure and Magnetic Properties of Cobalt Ferrite[J].Rare Metal Materials and Engineering,2011(Z1):379-382. |
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| Authors: | Guo Rui Wang Changan Yang Ankun Xu Tingting |
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| Affiliation: | (Tsinghua University, Beijing 100084, China) |
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| Abstract: | Cobalt ferrite CoFe2-xAlxO4 (x=0, 0.023, 0.046, 0.069, 0.092) samples were prepared by solid phase reaction method and sintered at 1300 oC in flow oxygen atmosphere for 2 h. The structure and magnetic properties of the samples were measured and analyzed by X-ray diffraction (XRD) and physical parameter testing system (PPMS-9T). The experiment results showed that all the Al3+ entered into the crystal lattice of CoFe2O4. The doped Al3+ was beneficial to the sintering and densification process. The trace amount of Al3+ was harmless to the specific saturation magnetization of CoFe2-xAlxO4 samples but the coercive force was reduced. |
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| Keywords: | cobalt ferrite doping aluminum hysteresis loop |
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