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DY: Fachverband Dynamik und Statistische Physik

DY 6: Soft Matter (joint session CPP/DY)

DY 6.3: Vortrag

Mittwoch, 29. September 2021, 10:45–11:00, H3

In situ GISAXS analysis of printed hybrid diblock copolymer thin films containing mixed magnetic nanoparticles — •Christopher Everett¹, Xinyu Jiang¹, Manuel Scheel¹, Huaying Zhong¹, Martin Bitsch², Martina Plank³, Markus Gallei², Matthias Schwartzkopf⁴, Stephan V. Roth^4,5, and Peter Müller-Buschbaum^1,6 — ¹TU München, Physik-Department, LS Funktionelle Materialien, Garching, Germany — ²Saarland University, LS Polymer Chemistry, Saarbrücken, Germany — ³TU Darmstadt, Ernst-Berl-Institut, Darmstadt, Germany — ⁴Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany — ⁵KTH Royal Institute of Technology, Stockholm, Sweden — ⁶Heinz Maier-Leibnitz Zentrum (MLZ), TU München, Garching, Germany

Diblock copolymer (DBC) thin films that form periodic nanostructures are appropriate scaffolds for magnetic nanoparticles (NPs) and have potential for a variety of applications such as highly functional magnetic sensors and in high-density magnetic data storage. In this investigation, ultra-high molecular weight PS-b-PMMA films are used as templates for both ferrimagnetic magnetite NP and ferromagnetic Ni NPs. The thin films, containing up to 6 wt% NPs, are fabricated by a slot-die coating technique and the morphological evolution of the films during the deposition and drying process is monitored in situ with grazing incidence small-angle X-ray scattering (GISAXS). The dry thin films are subjected to solvent vapor annealing and ordered nanostructured hybrid films are obtained. Using a SQUID magnetometer, the resulting magnetic properties are measured.