The electronic structure, surface properties, and in situ N₂O decomposition of mechanochemically synthesised LaMnO₃

Abstract

This study reports the importance of advanced synchrotron techniques for understanding the effect of milling atmosphere, either air or argon, on mechanochemically prepared LaMnO3 and the catalytic performance towards N2O decomposition (deN2O).

Entanglement of cation ordering and manipulation of the magnetic properties through a temperature-controlled topotactic interface reaction in nanocomposite perovskite oxides

“…The slow scan of the La 3d spectra in all of the samples showed a broad peak that is deconvoluted into three additional peaks, indicating the presence of La 3+ , satellite peaks 61 and La 2 O 3 or La(OH) 3 , 62 respectively. The presence of La 2 O 3 or La(OH) 3 can be due to the chemisorption of oxygen and moisture with the chemically active La element.…”

Enhanced thermal and dielectric properties of CaCu3Ti4O12 by (Fe, La)-co-doping

“…2h, where the main peak at ∼528.93 eV can be assigned to the lattice oxygen, and the additional shoulder peak at ∼530.63 eV can be attributed to adsorbed oxygen such as O 2 − , O − or OH − , or hydroxyl groups on the surface. 32,33 It is obvious that the adsorbed oxygen gradually increases (Fig. 2g and Fig.…”

Modulation of optical absorption and electrical properties in Mn-Co-Ni-O-based high-entropy thin films

“…In Figure 5, the Mn 2p region reveals two primary peaks at approximately 653.7 eV and 642.2 eV, arising from spin-orbit Frontiers in Materials frontiersin.org coupling and identified as Mn 2p 1/2 and Mn 2p 3/2 , respectively (Blackmore et al, 2020). Through deconvolution, the Mn 2p 1/2 peak positions for all samples are observed at 655.3, 654.0 and 652.7 eV, and the Mn 2p 3/2 peak positions are noted at 643.8, 642.5, and 641.2 eV, representing the Mn 4+ , Mn 3+ , and Mn 2+ oxidation states, respectively.…”