Antiferromagnetism and Crystalline Electric Field Effect of Ce2Pt3Si5

Antiferromagnetism and Crystalline Electric Field Effect of Ce2Pt3Si5
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Ce2Pt3Si5的反铁磁性和晶体电场效应

DOI:
10.1143/jpsj.77.124707
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发表时间:
2008
影响因子:
1.7
通讯作者:
K. Motoya
K. Motoya
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Y. Muro;M. Nakano;K. Motoya

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Ce2Pt3Si5是一种近藤晶格化合物,在TN=6.3K时发生反铁磁性相变。我们用磁化率和磁化强度测量确定了单晶Ce2Pt3Si5的晶态电场参数。得到的CEF参数解释了在比热的磁性部分观察到的肖特基反常现象。此外,我们还测量了在沿有序磁矩平行的[010]方向施加不同磁场时的比热和磁化强度。在3T以上,我们在这些测量中观察到了额外的异常。这一特征可以用CEF各向异性和Ruderman-Kittel-Kasuya-Yosida相互作用之间的竞争来解释。
Ce 2 Pt 3 Si 5 is a Kondo-lattice compound showing an antiferromagnetic transition at T N =6.3 K. We have determined the crystalline electric field (CEF) parameters by using the magnetic susceptibility and magnetization measurements of single-crystalline Ce 2 Pt 3 Si 5 above T N . The obtained CEF parameters explain a Schottky-type anomaly observed in the magnetic part of specific heat. Moreover, we have measured the specific heat and magnetization under various magnetic fields applied along [010] direction to which the magnetic moments are parallel in the ordered state. Above 3 T, we observed extra anomalies in these measurements. This feature can be explained by the competition between the CEF anisotropy and the Ruderman–Kittel–Kasuya–Yosida interaction.
新型Ce化合物Ce_2Pt_3Si_5的单晶研究
DOI: --
发表时间: 2008
期刊: Physica B-Condensed Matter 403
影响因子: --
作者:
Y. Muro;M. Nakano;K. Motoya
通讯作者: K. Motoya