Understanding the charge carriers dynamics in the La_0.55Ca_0.45Mn_0.8Nb_0.2O₃ perovskite: scaling of electrical conductivity spectra

Abstract

The present work proposes the best realistic theoretical approaches to examine the experimental conductivity data taken for La0.55Ca0.45Mn0.8Nb0.2O3.

Investigation of the impact of A-site cation disorder on the structure, magnetic properties, and magnetic entropy change of trisubstituted divalent ions in La0.7(Ba,Ca,Sr)0.3MnO3 manganite

“…49 The spin–orbit splitting of the La 3d level (∼16.8 eV) was identical for all the compounds and was close to those observed for perovskite samples. 48–51…”

“…Moreover, the oxygen concentration can influence the proportion of the mixed valence state of the Mn 3+ /Mn 4+ ratio, which affects the double-exchange process. 48…”

“…49 The spin-orbit splitting of the La 3d level (B16.8 eV) was identical for all the compounds and was close to those observed for perovskite samples. [48][49][50][51] The Ba 3d core levels exhibit doublet structures, as shown in Fig. 8c.…”

“…The spinorbit splitting of Ca 2p (B3.6 eV) is identical to that of CaO states, which is attributed to Ca 2+ . 48 The Sr 3d core levels presented in Fig. 8e display peaks at B132 and B134 eV, attributed to Sr 3d 5/2 and Sr 3d 3/2 , respectively.…”

“…The additional deconvoluted satellite structures at positions B835 eV and B852 eV are attributed to the multiple interaction effects between the La 3d core hole and 4f 1 . 48 The complex structure of La 3d can be explained by innerlevel electron transfer from the ligand orbitals to metal 3d orbitals. 49 The spin-orbit splitting of the La 3d level (B16.8 eV) was identical for all the compounds and was close to those observed for perovskite samples.…”