Abstract
The isotope selective grazing-incidence nuclear resonance scattering (GI-NRS) technique, which is a time analog to Mössbauer spectroscopy, is made depth resolved to probe the magnetism of the diffused Fe (Fediffused) and bulk Fe (Febulk) parts of the layer in an Fe/Alq3 [ferromagnetic (FM)/organic semiconductor (OSC)] bilayer structure. On the basis of theoretical simulations, it is demonstrated that the antinode regions of x-ray standing waves (XSWs) generated through wave guide structures allow one to measure the Fediffused and Febulk parts independently, providing evidence for a diffused layer with reduced electron density and hyperfine fields. Due to possible small isolated clusters of Fe in the diffused layer, Fe moments are found with random orientations, while in Febulk moments, they are aligned in the film plane due to shape anisotropy. GI-NRS under XSW is suitable for FM/OSC structures to obtain interface resolved magnetic information, which is otherwise difficult with any other available lab based conventional methods.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
