Correlating Local Structure and Magnetization Distribution in Magnetic Nanoparticles
The objective of this proposal is to investigate (using SANSPOL) the spatial magnetization distribution in monodisperse ferrite nanoparticles with a degree of structural disorder varied deliberately by post-synthesis annealing conditions. The observed enhanced magnetization upon annealing might originate in a reduction of surface spin disorder or enhancement of the particle core magnetization, or a combination of both effects can be expected as a result of increased structural order. The results will be correlated with analysis of the atomic Pair Distribution Function (PDF), obtained using high-energy X-ray diffraction experiments that are proposed at synchrotron sources in parallel. Whereas the local structure probed by PDF analysis can explain the deviation of expected physical properties on the atomic scale, the results of our combined approach will ultimately uncover the entanglement between the physical properties (here: magnetization) and the local structure (i.e. defect concentration).
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DISCH Sabrina; CUBITT Robert; DREGER Max; HONECKER Dirk; MEES Flore and ZAKUTNA Dominika. (2019). Correlating Local Structure and Magnetization Distribution in Magnetic Nanoparticles. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-890
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