Structural, Optical and Dielectric Properties of Sm2NiMnO6 Double Perovskite Nanoparticles . J. Int. Acad. Phys. Sci. [Internet]. 2026 Jun. 15 [cited 2026 Oct. 23];30(2):117-34. Available from: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/1042