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arXiv 2007.04165cond-mat.str-el
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CePd $_2$ P $_2$中铁磁性的压力诱导抑制

Pressure-induced suppression of ferromagnetism in CePd$_2$P$_2$

T. A. Elmslie, D. VanGennep, W. Bi, Y. Lai, S. T. Weir, Y. K. Vohra, R. E. Baumbach, J. J. Hamlin

摘要:

相关电子材料Cepd $_2$ P $_2$在29 K下以ThCr $_2$ Si $_2$结构结晶并具有铁磁性。Lai等人[Phys. Rev. B 97,224406(2018)]发现了通过Ni取代Pd的化学压缩诱导铁磁量子临界点的证据。然而,化学取代引起的无序效应干扰了对可能的临界行为的简单分析。在目前的工作中,我们研究的温度-压力-磁场相图的单晶Cepd $_2$ P $_2$到25 GPa的电阻率,磁化率和X-射线衍射测量的组合。我们发现,铁磁性似乎在12 GPa附近被破坏,而晶体结构没有任何变化。

英文摘要:

The correlated electron material CePd$_2$P$_2$ crystallizes in the ThCr$_2$Si$_2$ structure and orders ferromagnetically at 29 K. Lai et al. [Phys. Rev. B 97, 224406 (2018)] found evidence for a ferromagnetic quantum critical point induced by chemical compression via substitution of Ni for Pd. However, disorder effects due to the chemical substitution interfere with a simple analysis of the possible critical behavior. In the present work, we examine the temperature - pressure - magnetic field phase diagram of single crystalline CePd$_2$P$_2$ to 25 GPa using a combination of resistivity, magnetic susceptibility, and x-ray diffraction measurements. We find that the ferromagnetism appears to be destroyed near 12 GPa, without any change in the crystal structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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