Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.075
Publication date: 18th July 2019
Magnetic nanoparticles reveal unique magnetic properties which make them relevant for data storage, electronic and mechanical engineering, and biomedical applications[1,2]. With regard to these applications, one of the main aspects of fundamental interest is the magnetic anisotropy and the related magnetization distribution in individual nanoparticles. However, it is challenging to isolate surface-related effects from the effective magnetic anisotropy using macroscopic, integral magnetization methods. A size dependence of surface effects is well established, and non-saturation magnetization behavior in magnetic nanoparticles even at high fields is commonly attributed to surface spin canting or formation of a magnetically dead layer.
Polarized small-angle neutron scattering (SANS) is a versatile technique, which allows investigating the nanoparticle magnetization with spatial resolution[3]. In this presentation, I will give an overview of our studies of ferrite nanoparticles aiming at their intraparticle spatial magnetization distribution as investigated using polarized SANS[4,5]. I will introduce the capabilities of small angle scattering to determine chemical and magnetic nanoparticle morphologies and highlight the different contributions of particle core and surface spin disorder to the macroscopically observed magnetization.
Financial support from the German Research Foundation (DFG: Emmy Noether Grant DI 1788/2-1) is gratefully acknowledged.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.