Abrupt Change in Electronic States under Pressure in New Compound EuPt3Al5

Takatsugu Koizumi, Fuminori Honda, Yoshiki J. Sato, Dexin Li, Dai Aoki, Yoshinori Haga, Jun Gouchi, Shoko Nagasaki, Yoshiya Uwatoko, Yoshio Kaneko, Yoshichika Ōnuki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We successfully grew single crystals of a new ternary Eu-divalent compound, EuPt3Al5, with an orthorhombic structure (Pnma, #62) using the Bridgman method. EuPt3Al5 orders antiferromagnetically below TN = 12.4 K. TN increases monotonically with increasing pressure up to 8.0 GPa, decreases slightly at 8.5 GPa, and suddenly becomes zero above 9.5 GPa. From the results of low-temperature dependences of electrical and residual resistivities, a sudden disappearance of the antiferromagnetic ordering occurs with a dramatic change in the Eu electronic states from the nearly divalent state to the valence fluctuating state at Pc ≈ 9 GPa.

Original languageEnglish
Article number043704
Journaljournal of the physical society of japan
Issue number4
Publication statusPublished - Apr 15 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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