  Double perovskites R2NiMnO6 (R= Rare earth element) (RNMO) are a significant
class of materials owing to their Multifunctional properties with structural
modifications. In particular, multifunctional double perovskite oxides
La2NiMnO6 (LNMO) which possess both electric and magnetic orderings, chemical
flexibility, versatility, and indispensable properties like high ferromagnetic
curie temperature, high absorption rates, dielectrics, etc. have drawn a lot of
attention due their rich physics and diverse applications in various
technology. This justifies the intense research in this class of materials, and
the keen interest they are subject to both the fundamental and practical side.
In view of the demands of this material in lead-free perovskite solar cells,
photocatalytic degradation of organic dyes, clean hydrogen production, electric
tuneable devices, Fuel cells, gas sensing, and Biomedical applications, there
is a need for an overview of all the literature so far, the ongoing research
and the future prospective. This review summarised all the Physical and
Structural Properties of LNMO such as electric, magnetic, catalytic, and
dielectric properties with their underlying mechanisms. This review article
provides insight into the scope of studies in LNMO material for exploring
unexposed properties in new material research and to identify areas of future
investigation of the materials in the double perovskite family.
