LETTER TO THE EDITOR: The magnetic structure of CeAl2 is a non-chiral spiral
LETTER TO THE EDITOR: The magnetic structure of CeAl2 is a non-chiral spiral
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致编辑的信：CeAl2 的磁性结构是非手性螺旋
DOI：
10.1088/0953-8984/2/50/026
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Y. Bi
中科院分区：
文献类型：
--
作者：
E. Forgan;B. Rainford;S. Lee;J. Abell;Y. Bi
先前公认的CeAl2的空间调制磁结构是不正确的。外加磁场中的中子衍射测量表明，零场磁结构是螺旋形的；然而，两个Ce亚晶格上的矩以相反的方式旋转。在作者的模型中，Ce有序矩的大小在不同地点变化不大；不再需要Ce3+离子的非磁性基态，并且解释了谐波的极端弱点。
The previously accepted spatially modulated magnetic structure of CeAl2 is shown to be incorrect. Neutron diffraction measurements in an applied magnetic field imply that the zero-field magnetic structure is spiral: however, the moments on the two Ce sublattices rotate in opposite senses. In the author's model, the magnitude of the Ce ordered moment varies little from site to site; a non-magnetic ground state for the Ce3+ ion is no longer required, and the extreme weakness of the harmonics is explained.