CeIr3Ge7: A local moment antiferromagnetic metal with extremely low ordering temperature

Binod K. Rai, Jacintha Banda, Macy Stavinoha, R. Borth, D. J. Jang, Katherine A. Benavides, D. A. Sokolov, Julia Y. Chan, M. Nicklas, Manuel Brando, C. L. Huang, E. Morosan

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

CeIr3Ge7 is an antiferromagnetic metal with a remarkably low ordering temperature TN=0.63K, while most Ce-based magnets order between 2 and 15 K. Thermodynamic and transport properties as a function of magnetic field or pressure do not show signatures of Kondo correlations, interaction competition, or frustration, as had been observed in a few antiferromagnets with comparably low or lower TN. The averaged Weiss temperature measured below 10 K is comparable to TN, suggesting that the Ruderman-Kittel-Kasuya-Yosida exchange coupling is very weak in this material. The unusually low TN in CeIr3Ge7 can therefore be attributed to the large Ce-Ce bond length of about 5.7 Å, which is about 1.5 Å larger than in the most Ce-based intermetallic systems.

Original languageEnglish
Article number195119
JournalPhysical Review B
Volume98
Issue number19
DOIs
Publication statusPublished - 2018 Nov 16

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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