Inorganic Materials

, Volume 55, Issue 9, pp 964–967 | Cite as

Fergusonite–Scheelite Phase Transition of Praseodymium Orthoniobate

  • G. E. NikiforovaEmail author
  • A. V. Khoroshilov
  • K. S. Gavrichev
  • A. V. Knyazev
  • S. S. Knyazeva


Polycrystalline praseodymium orthoniobate, PrNbO4, has been studied by high-temperature X‑ray diffraction and differential scanning calorimetry. We have determined the temperature of the fergusonite–scheelite structural phase transition and shown it to be a second-order transition.


heat capacity differential scanning calorimetry high-temperature X-ray diffraction 



In this study, we used equipment at the Shared Physical Characterization Facilities Center, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences.


This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, basic research) and the Russian Foundation for Basic Research (grant no. 18-03-00343).


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • G. E. Nikiforova
    • 1
    Email author
  • A. V. Khoroshilov
    • 1
  • K. S. Gavrichev
    • 1
  • A. V. Knyazev
    • 2
  • S. S. Knyazeva
    • 2
  1. 1.Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of SciencesMoscowRussia
  2. 2.Lobachevsky State UniversityNizhny NovgorodRussia

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