Ferromagnetism and structural phase transition in rhombohedral PrI r3

Karolina Gornicka, Michal J. Winiarski, Robert J. Cava, Michael A. McGuire, Tomasz Klimczuk

Research output: Contribution to journalArticlepeer-review

Abstract

The synthesis, structural, magnetic, thermal, and transport properties are reported for polycrystalline PrIr3. At room temperature PrIr3 displays the rhombohedral space group R-3m and a PuNi3-type structure. At around 70 K a phase transition to a monoclinic C2/m structure is observed and continued cooling reveals temperature independent behavior of the unit cell volume. Further, PrIr3 undergoes a paramagnetic to ferromagnetic transition with Tc=7.5K. The temperature dependent magnetic susceptibility follows the Curie-Weiss law with a positive Curie-Weiss temperature, and an effective moment that is close to the theoretical effective moment for a free Pr+3 ion. The structural transition introduces further complexity into the behavior of PuNi3-type materials and highlights the importance of temperature-dependent structural studies to complement physical property measurements in intermetallic compounds.

Original languageEnglish
Article number064431
JournalPhysical Review B
Volume110
Issue number6
DOIs
StatePublished - Aug 1 2024

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