| 溶液凝胶自然燃烧制备的铝掺杂对钡铁氧体晶相和磁性能的影响 |
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| 引用本文： | 岳中岳,钟敏建,马洪良,郭广磊.溶液凝胶自然燃烧制备的铝掺杂对钡铁氧体晶相和磁性能的影响[J].上海大学学报(英文版),2008,12(3):216-220. |
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| 作者姓名： | 岳中岳 钟敏建 马洪良 郭广磊 |
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| 作者单位： | [1]Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, P. R. China [2]Instrumental Analysis ＆ Research Center, Shanghai University, Shanghai 200444, P. R. China |
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| 摘 要： | Al-substituted barium ferrite powders were synthesized using the sol-gel auto-combustion method according to the molecular formula BaAlxFe12-xO19 (x=0, 0.1, 0.2, 0.3, 0.4, 0.5, 1.0). Compared with non-substituted barium ferrite annealing at 1000℃, the vibrating sample magnetometer (VSM) measurement manifested that the optimum magnetic properties formation temperature of Al-substituted barium ferrite was 1100℃. The data from X-ray diffractometer (XRD) showed that with increasing x, the lattice constants (a and c) decreased as well as the unit-cell volume Vcell. Magnetic measurement of non-substituted and Al-substituted powders annealed from 900℃ to 1200℃ exhibited that the maximum magnetization M (10 kOe), the remanent magnetization Mr and the coercivity Hc depended strongly on the chemical composition of powder as well as the annealing temperature. When annealing at 1100℃, BaAl0.5Fe11.5019 of high coercivity Hc (6584 Oe) was produced. Meanwhile, M (10 kOe) and Mr were 42.83emu/g and 25.65emu/g, respectively.
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| 关 键 词： | Al-substituted barium ferrite non-substituted barium ferrite sol-gel auto-combustion magnetic properties 溶液凝胶 自燃烧 法制 铝掺杂 钡铁氧体 晶相 磁性能 影响 method synthesized hexaferrite barium ferrite magnetic properties phase formation high remanent magnetization coercivity depended chemical composition powders |
| 收稿时间： | 2006-07-19 |
| 修稿时间： | 2006年6月19日 |
Effect of Al-substitution on phase formation and magnetic properties of barium hexaferrite synthesized with sol-gel auto-combustion method |
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| Zhong-yue?Yue,Min-jian?Zhong,Hong-liang?Ma,Guang-lei?Guo.Effect of Al-substitution on phase formation and magnetic properties of barium hexaferrite synthesized with sol-gel auto-combustion method[J].Journal of Shanghai University(English Edition),2008,12(3):216-220. |
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| Authors: | Zhong-yue Yue Min-jian Zhong Hong-liang Ma Guang-lei Guo |
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| Institution: | 1. Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, P. R. China
2. Instrumental Analysis & Research Center, Shanghai University, Shanghai 200444, P. R. China |
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| Abstract: | Al-substituted barium ferrite powders were synthesized using the sol-gel auto-combustion method according to the molecular formula BaAlxFe12-xO19 (x=0, 0.1, 0.2, 0.3, 0.4, 0.5, 1.0). Compared with non-substituted barium ferrite annealing at 1000℃, the vibrating sample magnetometer (VSM) measurement manifested that the optimum magnetic properties formation temperature of Al-substituted barium ferrite was 1100℃. The data from X-ray diffractometer (XRD) showed that with increasing x, the lattice constants (a and c) decreased as well as the unit-cell volume Vcell. Magnetic measurement of non-substituted and Al-substituted powders annealed from 900℃ to 1200℃ exhibited that the maximum magnetization M (10 kOe), the remanent magnetization Mr and the coercivity Hc depended strongly on the chemical composition of powder as well as the annealing temperature. When annealing at 1100℃, BaAl0.5Fe11.5019 of high coercivity Hc (6584 Oe) was produced. Meanwhile, M (10 kOe) and Mr were 42.83emu/g and 25.65emu/g, respectively. |
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| Keywords: | Al-substituted barium ferrite non-substituted barium ferrite sol-gel auto-combustion magnetic properties |
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