Extraordinary magnetic properties of double perovskite EuCoMnOwide band gap semiconductor.

Some novel magnetic behaviours in double perovskite EuCoMnO(ECMO) have been reported. The x-ray photoemission spectroscopy study shows the presence of mixed valence states of transition metal ions. The UV-visible absorption spectroscopic study suggests that the ECMO has a direct wide band gap.

Probing the Griffiths like phase, unconventional dual glassy states, giant exchange bias effects and its correlation with its electronic structure in Pr Sr CoMnO.

Crystal, electronic structure, dc and ac magnetization properties of the hole substituted (Sr) and partially B-site disordered double perovskite Pr Sr CoMnO system have been investigated. The XRD pattern analysis showed a systematic decrease in the lattice parameters owing to the enhanced oxidation states of the Co/Mn ions. The electronic structure study by XPS measurements suggested the presence of mixed valence states of the B-site ions (Co /Co and Mn /Mn) with significant enhancement of the average oxidation states due to hole doping.

Investigation of multi-mode spin-phonon coupling and local B-site disorder in PrCoFeO by Raman spectroscopy and correlation with its electronic structure by XPS and XAS studies.

Electronic structure of PrCoFeO (at 300 K) was investigated by x-ray photoemission spectroscopy (XPS) and x-ray absorption spectroscopy techniques. All three cations, i.e.