| Crystallographic and magnetic structures ofPr6Fe13Ge studied by powder neutron diffraction |
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| 作者姓名： | 王芳卫 张泮霖 沈保根 严启伟 |
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| 作者单位： | State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Leon Brillouin Laboratory, CEA/Saclay, 91191 Gif sur Yvette, France;State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 摘 要： | Crystallographic and magnetic structures of Pr_6Fe_{13}Ge have been investigated by high-resolution powder neutron diffraction in the temperature range of 10－300 K. The magnetic structure consists of ferromagnetic Pr_6Fe_{13} slabs that alternate antiferromagnetically, along c, with the next Pr_6Fe_{13} slab separated by a non-magnetic Ge layer. The magnetic moments lie within the ab-planes. The propagation vector of this structure is k=(001) with respect to the conventional reciprocal lattice of the I-centred structure. However, the temperature-dependence of neutron-scattering intensity of the (110) Bragg peak, very similar to the temperature-dependent magnetization measured by SQUID magnetometer, indicates that a small c-axis ferromagnetic component should be added to the above antiferromagnetic model.
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| 关 键 词： | 中子衍射 磁场构造 镨铁镉铁磁体 反铁磁体 |
| 收稿时间： | 2003-05-20 |
Crystallographic and magnetic structures of Pr6Fe13Ge studied by powder neutron diffraction |
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| Wang Fang-Wei,Zhang Pan-Lin,Shen Bao-Gen and Yan Qi-Wei.Crystallographic and magnetic structures ofPr6Fe13Ge studied by powder neutron diffraction[J].Chinese Physics B,2004,13(6):918-923. |
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| Authors: | Wang Fang-Wei Zhang Pan-Lin Shen Bao-Gen and Yan Qi-Wei |
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| Institution: | State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Leon Brillouin Laboratory, CEA/Saclay, 91191 Gif sur Yvette, France |
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| Abstract: | Crystallographic and magnetic structures of Pr_6Fe_{13}Ge have been investigated by high-resolution powder neutron diffraction in the temperature range of 10－300 K. The magnetic structure consists of ferromagnetic Pr_6Fe_{13} slabs that alternate antiferromagnetically, along c, with the next Pr_6Fe_{13} slab separated by a non-magnetic Ge layer. The magnetic moments lie within the ab-planes. The propagation vector of this structure is k=(001) with respect to the conventional reciprocal lattice of the I-centred structure. However, the temperature-dependence of neutron-scattering intensity of the (110) Bragg peak, very similar to the temperature-dependent magnetization measured by SQUID magnetometer, indicates that a small c-axis ferromagnetic component should be added to the above antiferromagnetic model. |
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| Keywords: | neutron diffraction magnetic configuration Pr_6Fe_{13}Ge |
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