| 用中子衍射研究稀土-富铁永磁合金磁结构和D(H)LAP晶体结构 |
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| 引用本文： | 勾成,张百生,成之诸,程玉芬,杜红林,孙凯.用中子衍射研究稀土-富铁永磁合金磁结构和D(H)LAP晶体结构[J].原子能科学技术,1999,33(6):515-520. |
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| 作者姓名： | 勾成 张百生 成之诸 程玉芬 杜红林 孙凯 |
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| 作者单位： | 中国原子能科学研究院核物理研究所,北京,102413 |
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| 摘 要： | 用粉末中子衍射测量Ｈｏ２Ｆｅ９Ｇａ８－ｘＡｌｘ（ｘ＝２，４）和ＰｒＦｅ１０．５Ｍｏ１．５Ｎｘ的晶体结构和磁结构。衍射数据分别用ＲＸｉｅｔｖｅｌｄ结构精修程序ＲＩＥＴＡＮ和Ｆｕｌｌｐｒｏｆ处理。确定了替代原子Ｇａ，Ａｌ，Ｍｏ及间隙原子Ｎ的占位数以及磁性原子Ｈｏ，Ｆｅ，Ｐｒ的原子磁矩的大小和方向。
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| 关 键 词： | 中子衍射 晶体结构 磁结构 稀土 永磁合金 |
NEUTRON DIFFRACTION STUDIES OF THE MAGNETIC STRUCTURE OF RARE EARTH-IRON-RICH PERMANENT MAGNETIC ALLOYS AND THE CRYSTALLOGRAPHIC STRUCTURE OF D(H)LAP |
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| Gou Cheng,Zhang Baisheng,Cheng Zhixu,Cheng Yufen,Du Honglin,Sun Kai.NEUTRON DIFFRACTION STUDIES OF THE MAGNETIC STRUCTURE OF RARE EARTH-IRON-RICH PERMANENT MAGNETIC ALLOYS AND THE CRYSTALLOGRAPHIC STRUCTURE OF D(H)LAP[J].Atomic Energy Science and Technology,1999,33(6):515-520. |
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| Authors: | Gou Cheng Zhang Baisheng Cheng Zhixu Cheng Yufen Du Honglin Sun Kai |
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| Abstract: | The crystallographic and magnetic structure of Ho 2Fe 9Ga 8- x Al x ( x =2,4) and PrFe 10.5 Mo 1.5 N x compounds are studied by powder neutron diffraction. The atom fractional occupancies of Ga, Al, Mo and N and the atom magnetic moments of Ho, Fe and Pr are obtained by Rietveld analysis program. For Ho 2Fe 9Ga 8- x Al x ( x =2,4), the magnetic moments of the phase with the x =2,4 at 50 K and x =2 at 300 K show uniaxial magnetic anisotropy. PrFe 10.5 Mo 1.5 N x compound exhibits easy axis magnetic anisotropy, but the anisotropy of PrFe 10.5 Mo 1.5 is easy planar. The crystal structure of D(H)LAP is determined by single crystal neutron diffraction. The results indicate that the deuteriums occupy hydrogen positions except those hydrogen atoms bonded to carbon atoms. |
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| Keywords: | Neutron diffraction Crystallographic structure Magnetic structure |
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