Role of structural, morphological, and electronic characteristics in investigating the low temperature transport and magnetic behavior of Sr doped Sm2NiMnO6

Valence band spectra and doping based alterations in band gap and electric modulus of Nd2NiMnO6

“…The already experimentally reported value of band gap for pristine samples Nd 2 NiMnO 6 is about 1.5 eV [20].…”

“…Presence of different charge states and different amount of oxygen vacancies in the three samples explained the various properties of these compounds. The change in the ionic states of B-site cations (Ni and Mn ions) as well as the change in the lattice parameters with Sr doping have a considerable effect on the various double exchange and superexchange interactions responsible for the magnetic behavior of these double perovskites [20,29]. In fact the choice of B-type cations, the B site-ordering, the antisite disorders and the dopant are the most important factor in the effecting and investigating the various physical properties of these double perovskites [20].…”

“…It has been determined that the structure of most of these R 2 NiMnO 6 (R = rare earth element) double perovskite is monoclinic but as the ionic radius of rare earth decreases, the monoclinic structure comes under distortion. These compounds have importance in the field of spintronic devices, low temperature magnetocaloric refrigerant materials and new generation quantum electronics [20]. In this study, we have considered Nd 2 NiMnO 6 , which has also been found to have monoclinic structure.…”