Rai, Binod K.Banda, JacinthaStavinoha, MacyBorth, R.Jang, D.-J.Benavides, Katherine A.Sokolov, D. A.Chan, Julia Y.Nicklas, M.Brando, ManuelHuang, C.-L.Morosan, E.2019-01-112019-01-112018Rai, Binod K., Banda, Jacintha, Stavinoha, Macy, et al.. "CeIr3Ge7: A local moment antiferromagnetic metal with extremely low ordering temperature." <i>Physical Review B,</i> 98, no. 19 (2018) American Physical Society: https://doi.org/10.1103/PhysRevB.98.195119.https://hdl.handle.net/1911/105071CeIr3Ge7 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.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlePhysRevB.98.195119https://doi.org/10.1103/PhysRevB.98.195119