We report on a new high resolution apparatus for measuring magnetostriction suitable for use at cryogenic temperatures in pulsed high magnetic fields which we have developed at the Hochfeld-Magnetlabor Dresden. Optical fibre strain gauges based on Fibre Bragg Gratings are used to measure the strain in small (~1mm) samples. We describe the implementation of a fast measurement system capable of resolving strains in the order of 10−7 with a full bandwidth of 47kHz, and demonstrate its use on single crystal samples of GdSb and GdSi.
@article{arxiv.1002.0275,
title = {High resolution magnetostriction measurements in pulsed magnetic fields using Fibre Bragg Gratings},
author = {Ramzy Daou and Franziska Weickert and Michael Nicklas and Frank Steglich and Ariane Haase and Mathias Doerr},
journal= {arXiv preprint arXiv:1002.0275},
year = {2010}
}