000161039 001__ 161039
000161039 005__ 20251017144557.0
000161039 0247_ $$2doi$$a10.1016/j.micron.2025.103858
000161039 0248_ $$2sideral$$a144268
000161039 037__ $$aART-2025-144268
000161039 041__ $$aeng
000161039 100__ $$aHettler, Simon
000161039 245__ $$aOn the relationship between oxygen K edge fine structure and cobalt/nickel content in magnetite-based core-shell nanoparticles
000161039 260__ $$c2025
000161039 5060_ $$aAccess copy available to the general public$$fUnrestricted
000161039 5203_ $$aIron oxide nanoparticles (NPs) are used in a broad range of applications and offer the possibility of fine tuning their properties by forming hybrid core-shell structures. Scanning transmission electron microscopy (STEM) combined with electron energy loss spectroscopy (EELS) is frequently used to study such NPs at the local scale. Specifically, the energy loss near edge structure (ELNES) provides rich information on the local chemistry. Here, the dependence between the ELNES signal of the oxygen K edge and the incorporation of cobalt and nickel into the shell of magnetite NPs is investigated quantitatively using an intensity ratio between specific energy windows of the O-K edge. The analysis shows that both the local and global cobalt and nickel content of a NP influence this relationship. In addition, the overlap between the Fe-L1 and Ni-L2,3 edges is studied, the impact of a supporting film on the ELNES analysis is discussed, and the importance of a clean sample preparation is demonstrated.
000161039 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E13-23R$$9info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICIU/PID2023-151080NB-I00$$9info:eu-repo/grantAgreement/ES/MICIU/PRTR-C17.I1
000161039 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000161039 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000161039 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, Raul
000161039 773__ $$g196-197 (2025), 103858 [10 pp.]$$pMicron$$tMICRON$$x0968-4328
000161039 8564_ $$s6416649$$uhttps://zaguan.unizar.es/record/161039/files/texto_completo.pdf$$yVersión publicada
000161039 8564_ $$s2766162$$uhttps://zaguan.unizar.es/record/161039/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000161039 909CO $$ooai:zaguan.unizar.es:161039$$particulos$$pdriver
000161039 951__ $$a2025-10-17-14:13:25
000161039 980__ $$aARTICLE