Elastic anomalies associated with possible charge order and other phase transitions in a mixed-valent compound YbPd were investigated by ultrasonic measurements. A pronounced elastic anomaly was observed at a possible charge-ordering temperature of 125 K, accompanied with a distinct hysteresis. On the other hand, a slight but clear elastic anomaly was observed at other phase transitions at 1.9 K and 105 K. We argue that the data can be described in terms of 4f low-lying level scheme of Yb ions under a crystalline electric field effct and a possible charge ordering although Yb seems to go into a mixed-valent state in YbPd.
|ジャーナル||Chinese Journal of Physics|
|出版ステータス||出版済み - 2 1 2011|
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