Iron-resonant valence band photoemission and oxygen near edge x-ray absorption fine structure study on La&lt;SUB&gt;1―x&lt;/SUB&gt;Sr&lt;SUB&gt;x&lt;/SUB&gt;Fe&lt;SUB&gt;0.75&lt;/SUB&gt;Ni&lt;SUB&gt;0.25&lt;/SUB&gt;O&lt;SUB&gt;3―&lt;/SUB&gt;&lt;I&gt;&lt;SUB&gt;δ&lt;/SUB&gt;&lt;/I&gt;

Erat, Selma; Wadati, Hiroki; Aksoy, Funda; Liu, Zhi; Graule, Thomas; Gauckler, Ludwig J.; Braun, Artur

doi:10.1063/1.3484960

Iron-resonant valence band photoemission and oxygen near edge x-ray absorption fine structure study on La_1―xSr_xFe_0.75Ni_0.25O_3―_δ

Erat S, Wadati H, Aksoy F, Liu Z, Graule T, Gauckler LJ & Braun A

Citation

Erat, S., Wadati, H., Aksoy, F., Liu, Z., Graule, T., Gauckler, L. J., & Braun, A. (2010). Iron-resonant valence band photoemission and oxygen near edge x-ray absorption fine structure study on La_1―xSr_xFe_0.75Ni_0.25O_3―_δ. Applied Physics Letters, 97(12), 124101 (3 pp.). https://doi.org/10.1063/1.3484960

Persistent URL https://www.dora.lib4ri.ch/empa/islandora/object/empa:4217

Iron resonant valence band photoemission spectra (VB PES) of Sr substituted LaFe_0.75Ni_0.25O₃₋_δ have been recorded across the Fe 2p-3d absorption threshold to obtain Fe specific spectral information on the 3d projected partial density of states. Comparison with La_1−xSr_xFeO₃ resonant VB PES literature data suggests that substitution of Fe by Ni forms electron holes which have mainly O 2p character. Substitution of La by Sr increases the hole concentration to an extent that the e_g structure vanishes. The variation in the e_g and t_2g structures is paralleled by the changes in the electrical conductivity.