Sulfidation of Single-Phase Oxide on Copper and as Powder Studied Using Soft X-Ray Spectroscopy

Spin state transition in LaCoO3 studied using soft x-ray absorption spectroscopy and magnetic circular dichroism.

Using soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co-L(2,3) edge, we reveal that the spin state transition in LaCoO3 can be well described by a low-spin ground state and a triply degenerate high-spin first excited state. From the temperature dependence of the spectral line shapes, we find that LaCoO3 at finite temperatures is an inhomogeneous mixed-spin state syste...

Green Synthesis and Characterization of Copper Oxide Nanoparticles Using Coffee Powder Extract

The use of plant extract is generating interest of researchers toward cost effective and eco-friendly green synthesis of nanoparticles. In the present work, Cupric oxide nanoparticles were synthesized using coffee powder extracts by the sol-gel method at different calcination temperatures. The synthesized nanoparticles were characterized by X-ray diffraction, scanning electron microscopy , ultr...

Electron-hole recombination on ZnO(0001) single-crystal surface studied by time- resolved soft X-ray photoelectron spectroscopy

Stability of cerium oxide on silicon studied by x-ray photoelectron spectroscopy

The silicon–cerium oxide interface is studied using x-ray photoelectron spectroscopy. The oxidation and reduction of species at the interface are examined as a function of annealing temperature both in vacuum and oxygen ambient, in order to determine their relative stabilities. By depositing a very thin CeO2 film ~;30 Å!, the cerium and silicon core level peaks can be monitored simultaneously. ...

Electronic structure of InN studied using soft x-ray emission, soft x-ray absorption, and quasiparticle band structure calculations

The electronic structure of wurtzite InN 0001̄ thin films has been studied using a combination of soft x-ray emission and absorption spectroscopies. We measured the elementally and orbitally resolved InN valence and conduction bands by recording the N K-edge spectra. Theoretical calculations of the N 2p partial density of states were performed within the GW framework of many body perturbation th...