High resolution magnetostriction measurements in pulsed magnetic fields
  using Fibre Bragg Gratings

Doerr, Mathias; Haase, Ariane; Daou, Ramzy; Steglich, Frank; Weickert, Franziska; Nicklas, Michael

doi:10.1063/1.3356980

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High resolution magnetostriction measurements in pulsed magnetic fields using Fibre Bragg Gratings

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Author(s): Ramzy Daou , Franziska Weickert , Michael Nicklas , Frank Steglich , Ariane Haase , Mathias Doerr

Publication date Created: 01 February 2010

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Abstract

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.