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柳澤 達也*; 立岩 尚之; 真山 太一*; 齋藤 旬*; 日高 宏之*; 網塚 浩*; 芳賀 芳範; 根本 祐一*; 後藤 輝孝*
Journal of the Physical Society of Japan, 80(Suppl.A), p.SA105_1 - SA105_3, 2011/07
被引用回数:3 パーセンタイル:27.54(Physics, Multidisciplinary)Ultrasonic measurements of UPdSi were performed in order to investigate elastic properties of the cage-structured compound UPdSi. At temperatures over antiferromagnetic ordering at = 19 K, neither an up-turn anomaly nor frequency dependence of the elastic constants, regarding the ultrasonic dispersion (UD), was found. A drastic change of mode at , in particular, implies a strong magneto-elastic coupling of 5-electrons or a possible contribution of a ferroquadrupole interaction to the antiferromagnetism in UPdSi.