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Ferromagnetism and structural phase transition in rhombohedral PrI r3

Journal Article · · Physical Review. B
 [1];  [2];  [3];  [4];  [2]
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Gdansk University of Technology (Poland)
  2. Gdansk University of Technology (Poland)
  3. Princeton Univ., NJ (United States)
  4. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

The synthesis, structural, magnetic, thermal, and transport properties are reported for polycrystalline PrI⁢r3. At room temperature PrI⁢r3 displays the rhombohedral space group R–3m and a PuNi3-type structure. At around 70 K a phase transition to a monoclinic C⁢2/m structure is observed and continued cooling reveals temperature independent behavior of the unit cell volume. Further, PrI⁢r3 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 P⁢r+3 ion. Finally, 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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Gordon and Betty Moore Foundation (GBMF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2440975
Alternate ID(s):
OSTI ID: 2473840
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 6 Vol. 110; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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