科研之友
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摘要
Neutron diffraction measurements were performed on single-crystal samples to study the nature of the exotic order phase of CeOs4Sb12 below the transition temperature 0.9 K. An antiferromagnetic ordering with propagation vector q = (100), and a tiny moment is determined as the magnetic ground state. Our neutron data provide direct evidence for a spin-density-wave (SDW) ground state as first proposed by Yogi et al.
