Neutron-diffraction study of the magnetic structure of GdB2C2
Neutron-diffraction study of the magnetic structure of GdB2C2
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GdB2C2磁结构的中子衍射研究
DOI：
10.1007/s003390201366
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Onodera
中科院分区：
文献类型：
--
作者：
Y. Yamaguchi;K. Ohoyama;H. Yamauchi;K. Indoh;H. Onodera
本研究有两个目的。一个是观察我们的粉末中子衍射仪爱马仕对重中子吸收剂GdB2C2的性能。另一种是将GdB_2C_2的磁性结构看作是四元RB_2C_2家族的化合物，其中反铁四极相互作用和磁性相互作用相互竞争。由于Gd离子没有四极矩，我们选择GdB2C2来阐明该系统中的纯磁相互作用。我们得到的衍射数据，使用反射几何，并得出结论，磁相互作用是反铁磁的c平面和铁磁沿着c轴。
There are two purposes in this study. One is to see the performance of our powder neutron diffractometer, HERMES, for a very heavy neutron absorber, GdB2C2. The other is to see the magnetic structure of GdB2C2as a compound of the tetragonal RB2C2family, in which antiferroquadrupolar and magnetic interactions compete. We choose GdB2C2to clarify the purely magnetic interaction in this system because the Gd ion has no quadrupolar moment. We obtained diffraction data using reflection geometry and concluded that the magnetic interaction is antiferromagnetic in the c plane and ferromagnetic along the c axis.