Abstract:
The structural, temperature variation of magnetic and dielectric properties of RE2NiMnO6(RE¼La, Pr,
Sm, and Tb) double perovskites have been investigated. RE2NiMnO6 have crystallized into pure
monoclinic bulk phase with space group P21/n, shows ferromagnetism and relaxor dielectric behavior
in intermediate temperatures. Further, magnetic and dielectric properties show a correlation with the
radius of RE ions and thereby with the average Ni–O–Mn bond angle in the monoclinic double perovskite
structure. These investigations suggest the occurrence of a spin-lattice coupling in RE2NiMnO6which
makes them attractive materials in thefield of spintronics
