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On the high-pressure phase diagram of YbRh2Si2

机译:关于YbRh2Si2的高压相图

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We studied the high-pressure phase diagram of YbRh2Si2 by AC calorimetry under high pressure up to 12 GPa. Two magnetic transitions are observed in the pressure range up to 7 GPa. The initial linear increase of the magnetic ordering temperature T-N with pressure is followed by a regime up to 8.5 GPa where valence fluctuations are important. Above 9 GPa TN is increasing as expected from the Doniach model. Further the influence of the local crystal electric field on the magnetic ordering is discussed. (c) 2006 Elsevier B.V. All rights reserved.
机译:我们通过交流量热法在高达12 GPa的高压下研究了YbRh2Si2的高压相图。在高达7 GPa的压力范围内观察到两个磁跃迁。磁有序温度T-N随压力的最初线性增加,随后是高达8.5 GPa的状态,其中价态波动很重要。高于9 GPa TN将按照Doniach模型的预期增加。进一步讨论了局部晶体电场对磁有序性的影响。 (c)2006 Elsevier B.V.保留所有权利。

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