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We investigate electronic and magnetic properties of novel nanoscale systems to understand and improve their performance in (future) application. As main characterization technique we use x-ray absorption spectroscopy.

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illustration of magnetic heating

Carolin Schmitz-Antoniak is professor at TH Wildau

On July 1st, Carolin Schmitz-Antoniak started as professor for Instrumental Analytics and Applied Surface Physics at TH Wildau - University of Applied Science. More details will follow soon...

illustration of magnetic heating

Our work featured in Physical Chemistry Chemical Physics

Hyperthermia cancer treatment is a novel application of magnetic nanoparticles which are used to locally heat tumour cells. The heat is used to destroy tumour cells directly making use of the so-called programmed cell death or to support conventional therapies like radiation therapy by suppressing their cell repair mechanism. The search for suitable materials is still an important interdisciplinary issue. In our work a new combination of cobalt ferrite (CFO) and palladium nanoparticles show improved heat generation ability that even outperform commercially available nanoparticles. This piece of application-driven basic research gives an important insight into utilization of tailored nanohybrids and was featured on the inside back cover of the journal Physical Chemistry Chemical Physics.

spin density visualisation

First XMCD measurements of diamagnetic states

Soft x-ray magnetic circular dichroism (XMCD) is typically used to study ferro- or paramagnetic materials, but not diamagnetism. In our work, published in the Nature Communications Chemistry, we overcame this limitation and used XMCD fine structures to distinguish diamagnetic states in molecular magnets in conjunction with theoretical calculations. This work opens the field of XMCD to detailed investigations of magnetism and related electronic states of diamagnetic materials like e.g. the surface of superconductors or topological insulators.

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Shutdown of BESSY II

Bad news: Because of the coronavirus pandemia, the BESSY II synchrotron radiation source of the Helmholtz-Zentrum Berlin was converted to minimum operation on March 20th, 2020. User operation stopped completely.

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New UHV system for nanoparticle synthesis

Gas-phase condensation can now be used in our group to synthesise metallic and oxidic nanoparticles with narrow size distribution. The system is UHV compatible and offers the possibility to prepare core-shell nanoparticles by in-flight coating of the initially formed particles. The systems was purchased from Mantis Deposition Ltd., a first test run was performed successfully.

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Our work on the front cover of Annalen der Physik

What are the mutual influences of electronic properties, crystallographic structures and magnetism? Moreover, how do they affect phase transitions? To shed light on these subjects, we investigated surface modified magnetite nanoparticles using element-specific synchrotron radiation spectroscopy. Our work has been featured on the front cover of “Annalen der Physik“ a journal renowned in the field of physics for more than 225 years.
→ Press release PGI-6
→ Article (open access)



Last updated: 2021-07-04
Prof. Dr. Carolin Schmitz-Antoniak