Elastic constants of U(Ru1?xRhx)2Si2
Elastic constants of U(Ru1?xRhx)2Si2
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U(Ru1?xRhx)2Si2 的弹性常数
DOI：
10.1088/1742-6596/200/1/012236
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
H. Amitsuka
中科院分区：
文献类型：
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作者：
T. Yanagisawa;H. Saito;T. Mayama;Y. Ikeda;H. Hidaka;M. Yokoyama;H. Amitsuka
对Rh取代体系U（Ru1−xRhx）2Si2（x = 0，0.02和0.07）进行了超声测量，以研究其“隐藏有序”（HO）相和反铁磁（AFM）相的低温相变的晶格性质. x = 0.02和0.07的样品的弹性常数C11对T表现出低于80 K的降低，这类似于已经报道的未掺杂样品中的软化。x = 0.02的C11在14.0 K时表现出台阶状异常，在6.7 K时出现最小值，软化率为3.2%，分别对应于HO和AFM转变。在x = 0.07的样品中，C11仅在17K附近表现出肩状异常，并继续下降到4.2K。
Ultrasonic measurements on Rh-substitution system U(Ru1−xRhx)2Si2 (x = 0, 0.02 and 0.07) were performed in order to investigate lattice properties for low temperature phase transitions of 'hidden order' (HO) phase and antiferromagnetc (AFM) phase. Elastic constant C11 vs. T of the x = 0.02 and 0.07 samples exhibit a depression below 80 K, which is similar to a softening in the non-doped sample which had already been reported. The C11 of x = 0.02 exhibits a step-like anomaly at 14.0 K and an additional softening of 3.2% with minimum at 6.7 K, which correspond to HO and AFM transitions, respectively. The C11 in x = 0.07 sample only exhibits a shoulder-like anomaly at around 17 K and continue to depress down to 4.2 K.