Fergusonite–Scheelite Phase Transition of Praseodymium Orthoniobate


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Abstract

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.

About the authors

G. E. Nikiforova

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: gen@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

A. V. Khoroshilov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: gen@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

K. S. Gavrichev

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: gen@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

A. V. Knyazev

Lobachevsky State University

Email: gen@igic.ras.ru
Russian Federation, pr. Gagarina 23/2, Nizhny Novgorod, 603950

S. S. Knyazeva

Lobachevsky State University

Email: gen@igic.ras.ru
Russian Federation, pr. Gagarina 23/2, Nizhny Novgorod, 603950

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