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Magnetic structure determination of Ce$$T_{2}$$Al$$_{10}$$ ($$T$$ = Ru and Os); Single crystal neutron diffraction studies

単結晶中性子回折研究によるCe$$T_{2}$$Al$$_{10}$$($$T$$=Ru and Os)の磁気構造決定

加藤 治一*; 小林 理気; 竹坂 智明*; 西岡 孝*; 松村 政博*; 金子 耕士; 目時 直人

Kato, Harukazu*; Kobayashi, Riki; Takesaka, Tomoaki*; Nishioka, Takashi*; Matsumura, Masahiro*; Kaneko, Koji; Metoki, Naoto

Neutron diffraction studies of Ce$$T_{2}$$Al$$_{10}$$ ($$T$$ = Ru and Os), which shows an anomalous transition at $$T_{0}=27$$ K for CeRu$$_{2}$$Al$$_{10}$$ and at 29 K for CeOs$$_{2}$$Al$$_{10}$$, have been carried out using single crystal samples. In the ordered state below $$T_{0}$$, obvious superlattice reflections have been found, indicating the appearance of ordered magnetic moments. The magnetic structures of both compounds could be commonly explained with a propagation vector $${rmbf q}= (0, 1, 0)$$, where collinear antiferromagnetic moments with magnitudes of 0.42(1) $$mu_{rm B}$$ for CeRu$$_{2}$$Al$$_{10}$$ and of 0.29(1) $$mu_{rm B}$$ for CeOs$$_{2}$$Al$$_{10}$$ are aligned along the $$c$$-axis.

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パーセンタイル:9.66

分野:Physics, Multidisciplinary

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