| Doping effects on structural and magnetic evolutions of orthoferrite SmFe（1-x） Alx O3 |
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| 引用本文： | 李娜娜,李会,唐瑞莲,韩丹丹,赵永胜,高伟,朱品文,王欣.Doping effects on structural and magnetic evolutions of orthoferrite SmFe（1-x） Alx O3[J].中国物理 B,2014(4):438-443. |
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| 作者姓名： | 李娜娜 李会 唐瑞莲 韩丹丹 赵永胜 高伟 朱品文 王欣 |
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| 作者单位： | State Key Laboratory of Superhard Mate~als, Jilin University, Changchun 130012, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.51172091) |
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| 摘 要： | The structural and magnetic properties of SmFeO3 with B site substitution of non-magnetic atom A1 are investigated. The x-ray diffraction patterns show that SmFe（1-x）AlxO3 remains an orthorhombic structure within the whole doping range, and the unit-cell volume decreases monotonically with the increase of doped A1 concentration. Besides, the octa- hedral tilting distortions of FeO6 are found to be alleviated while the tolerance factor increases. However, the relationship between the lattice parameters and Al concentration is observed to deviate from Vegard＇s rule, and this may be caused by magnetostriction effects. For the doping content values in a range 0 〈 x 〈 0.6, the ferromagnetism, antiferromagnetism, and paramagnetism are observed to occur continuously. Moreover, the magnetization and the spin reorientation temperature （Tk） decrease monotonically as Al content value increases. With the doping content values being x = 0.8 and 1.0, these compounds only show paramagnetic behavior.
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| 关 键 词： | 斜方晶结构 掺杂量 非磁性 铁氧体 演化 X-射线衍射 磁致伸缩效应 反铁磁性 |
Doping effects on structural and magnetic evolutions of orthoferrite SmFe_((1-x) )Al_x O_3 |
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| Abstract: | magnetic materials, X-ray diffraction, magnetic properties |
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| Keywords: | magnetic materials X-ray diffraction magnetic properties |
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