RIXS, XES and XAS studies for electronic structure of rare earth and alkaline earth modified manganite.

This article reports on the RIXS (Resonant inelastic X-ray scattering), XES (X-ray emission spectroscopy), and XAS (X-ray absorption spectroscopy) of the LaSr 2 Mn 2 O 7 , La 0.95 Ba 0.05 MnO 3 , and La 1.2 (BaCa) 1.8 Mn 2 O 7 at 40 K, 100 K and 300 K. The RIXS spectra of these samples show the presence of Mn in different valence states (Mn2+, Mn3+, and Mn4+) which is associated with the Jahn-Teller distortion due to overlapping between O2− and the unpaired electrons of transition metal Mn. It has also been noticed that the distortion observed in different valence states of Mn with O2− is found to be suppressed with dropping and the temperature. So, based on aforementioned studies, the Manganites have been considered as a strongly correlated magnetic system which would be useful in magnetic device applications. • Studies on the RIXS, XES, XAS of single crystal LaSr2Mn2O7, La0.95Ba0.05MnO3, and La1.2(BaCa)1.8Mn2O7. • Different valence states of Mn have been probed under different temperatures. • Jahn-Teller distortion have been observed in Mn-O bonds due to overlapping of 3d and 2p states, respectively. • Studies of different electronic structure reflect manganites as strongly correlated magnetic system. • Suitable and potential candidates for magneto-caloric, magnetoresistance and magnetic device applications. [ABSTRACT FROM AUTHOR]