Neutron Scattering Study on the Orbital Order of DyB2C2 in Magnetic Fields
Neutron Scattering Study on the Orbital Order of DyB2C2 in Magnetic Fields
复制标题
DyB2C2 磁场中轨道序的中子散射研究
DOI：
10.1143/jpsjs.71s.94
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发表时间：
2002
影响因子：
1.7
通讯作者：
Yamaguchi Yasuo
中科院分区：
文献类型：
--
作者：
Yamauchi Hiroki;O. Kenji;Sato Masugu;Katano Susumu;Onodera Hideya;Yamaguchi Yasuo
用中子散射方法研究了DyB 2C 2的反铁四极（AFQ）有序.在AFQ有序相中，施加磁场时出现指数为1，0，1/2，1，0，1和1，0，3/2的反铁磁反射，并且在高达2.5T的磁场下发展。这些场致AFM反射是DyB 2C 2中AFQ有序的明显证据.实验结果表明，Dy四极矩的AFQ阶数强烈地抑制了感生磁偶极矩。提出了这种磁有序的一种可能的模型。
Antiferroquadrupolar (AFQ) ordering in DyB 2 C 2 has been investigated by neutron scattering under applied magnetic fields. In the AFQ ordered phase, antiferromagnetic reflections indexed as 1,0,1/2, 1,0,1 and 1,0,3/2 appear upon applying magnetic fields, and develop with fields up to 2.5 T. These field induced AFM reflections are clear evidence of the AFQ order in DyB 2 C 2 . Experimental result shows that the induced magnetic dipolar moments are strongly suppressed by the AFQ order of the Dy quadrupolar moments. A possible model of this magnetic ordering is proposed.