SKM 2021 – wissenschaftliches Programm
CPP 7.3: 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. Roth4,5, and Peter Müller-Buschbaum1,6 — 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.