149Sm nuclear resonant scattering of SmB2C2
149Sm nuclear resonant scattering of SmB2C2
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SmB2C2 的 149Sm 核共振散射
DOI：
10.1016/j.jmmm.2003.11.077
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发表时间：
2004
影响因子：
2.7
通讯作者：
H. Onodera
中科院分区：
文献类型：
--
作者：
S. Tsutsui;Yasuhiro Kobayashi;Y. Yoda;M. Seto;Kentaro Indoh;H. Onodera
利用{sup 149}Sm原子核共振前向散射技术，在SmB{sub 2}C{sub 2}上转变温度低于51 K的温度下，观测到了由磁有序引起的量子拍频谱。在60 K下可以观察到没有动力学拍频或量子拍频的光谱。这一结果表明，磁相互作用继续存在高于51 K。中子从HoB{sub 2}C{sub 2}的磁散射的检查表明，在尼尔温度以上的磁相互作用的类似的延续。看来，在60 K的光谱是由分布的超精细磁场。
The quantum beat spectra due to magnetic ordering can be observed below the 51 K upper transition temperature of SmB{sub 2}C{sub 2} using the nuclear resonant forward scattering technique with the {sup 149}Sm nuclei. The spectrum without dynamical or quantum beats can be observed at 60 K. This result indicates that the magnetic interaction continues to exist above 51 K. Examinations of the diffuse magnetic scattering of neutrons from HoB{sub 2}C{sub 2} show a similar continuation of the magnetic interaction above the Neel temperature. It appears that the spectrum at 60 K is caused by a distribution of the hyperfine magnetic field.