Imaging of displacement fields in a bulk amorphous alloy
We will investigate the magnetic microstructure of a bulk metallic glass (BMG) (Fe70Mo5Ni5P12.5B2.5C5) by means of spin-polarized and magnetic-field-dependent small-angle neutron scattering (SANS). Recent theoretical work predicts that the fundamental instability of a BMG - when subjected to a compressive stress - is accompanied by the appearance of coherent quadrupolar structures forming along a line which is at an angle of 45° relative to the compressive stress axis. As consequence of magnetoelastic coupling (linking the strain tensor to the magnetization), we expect that the displacement field related to the compressive stress couples to the magnetization distribution. SANS is ideally suited to image the resulting quadrupolar spin texture in the bulk of the material and on the nanometer length scale. The proposed POLARIS experiments will provide insights into the existence and structure of displacement fields in a BMG, and we may, thus, contribute to the understanding of the fundamental instability and to the improvement of the mechanical properties of this important class of materials.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
MICHELS Andreas; BENDER Philipp; BIRRINGER Rainer; Michael Johannes Deckarm; HONECKER Dirk; LEIBNER Andreas and METTUS Denis. (2015). Imaging of displacement fields in a bulk amorphous alloy. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-816
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.