DOI > 10.5291/ILL-DATA.5-54-193

This proposal is publicly available since 11/09/2020

Title

Dipolar coupling in arrays of magnetic nanoparticles, studied using time-of-flight polarized GISANS

Abstract

We propose a time-of-flight polarized GISANS study on mesocrystals of iron oxide nanoparticles in order to elucidate the magnetic dipolar interactions in orientationally aligned nanoparticles. The long range ordered mesocrystals under study consist of monodisperse maghemite nanocubes with edge lengths of 9.3 nm and 11.1 nm. First polarized GISANS test measurements carried out at D33 reveal a large amount of reflections that are resolution-limited in their FWHM. With the proposed experiment we will exploit the time-of-flight mode at D33 in order to access the depth resolution of GISANS without variation of the incident angle and at the same time increase the Q resolution onf the experiment. As a result, we expect to gain insight into the dipolar coupling in long range ordered arrangements of orientationally aligned nanoparticles. This study will be a valuable asset to our ongoing TISANE studies towards the directionally resolved magnetization relaxation in maghemite nanocubes.

Experimental Report

Download Data

Please note that you will need to login with your ILL credentials to download the data.

Download Data

Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

DISCH Sabrina; DRESEN Dominique and HONECKER Dirk. (2015). Dipolar coupling in arrays of magnetic nanoparticles, studied using time-of-flight polarized GISANS. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-193

Cited by

This data has not been cited by any articles.

Metadata

Experiment Parameters

  • Environment temperature

    10 - 300 K

Sample Parameters

  • Formula

    • iron oxide mesocrystals