High Field 31P NMR Study of Filled Skutterudite Compound SmRu4P12 |
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Filled skutterudite compound SmRu4P12 has successive phase transition at 16.5 K and 15 K in zero field. The higher temperature, T, transition is considered as a magnetic octapole order and the lower T transition as an antiferromagnetic order. The field dependence of the nuclear spin-lattice relaxation rate 1/T1 (31P) has shown that the anomaly associated with the antiferromagnetic order is vague at low field. With increasing field, apparent anomalies associated with respective transitions were observed.
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Fac. of Sci., Chiba University: Y. Kohori, H. Fukazawa, K. Hachitani |
充填スクッテルダイト化合物SmRu4P12は,零磁場では16.5 Kで八極子秩序と考えられる相転移を示し,引き続き15以下で反強磁性秩序が発生すると考えられている.31P-NMRの測定結果から,二つの相転移は低磁場では不明確であるが,磁場の増加と共に徐々に離れて行き,150kOeで明確に分離していることが分かる. |
千葉大学理学部:小堀 洋, 深澤英人, 蜂谷健一 |