Transport properties accompanied by collapse of antiferromagnetism of

✍ Scribed by A. Mitsuda; Y. Ikeda; N. Ietaka; S. Fukuda; Y. Isikawa

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 197 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.031

✦ Synopsis

We have measured temperature dependence of electrical resistivity r of EuðPt 1Àx Ni x Þ 2 Si 2 (0pxp0:25) to investigate the behavior associated with collapse of antiferromagnetism which was previously found in the magnetic susceptibility. For xp0:15, the antiferromagnetism survives but is gradually collapsed with increasing x. For x ¼ 0:20 and 0.25, the rðTÞ curve exhibits T 2 dependence corresponding to Fermi-liquid behavior. The T 2 coefficient of the resistive A and Sommerfeld coefficient g fulfill new grand Kadowaki-Woods relation, which implies that the samples of x ¼ 0:20 and 0.25 are a member of heavy fermion systems.