  Double perovskites R2NiMnO6 (R= Rare earth element) (RNMO) are a significant
class of materials owing to their varied tunability of the magnetic and
electrical properties with the structural modifications. Pr2NiMnO6 (PNMO) is
one of the least explored members of this series, which shows spin-phonon
coupling, magnetocaloric effect, and electrochemical performance for various
applications such as spintronics, magnetocaloric refrigerant, and solid oxide
fuel cells. Most of the studies in PNMO are limited to the application domain
and focus on the comparative study with different rare earth elements. Detailed
structural studies like neutron diffraction are sparse in PNMO samples which
will give a perception to the ordering in the compound that strongly depends on
the physical and chemical properties. This review article goes through the
various aspects of PNMO materials that have been reported till now and showcase
the octahedral distortions and corresponding structural changes and the
exchange interactions, which in turn correlates with the magnetic and
electrical properties. The comparison study of PNMO with other members of the
RNMO family and the relevance of PNMO over other members is also tried to
showcase through this article. Hope this article provides an insight into the
scope of studies in PNMO material for exploring unexposed properties of the
materials in the double perovskite family.
