Fig. 1

Sketch of the in-situ XRD and dilatometer setup used at Desy. A picture of a CGO: Cu bar sample, the thermal expansion recorded by the dilatometer. The interior of the dilatometer and the diffracted rings are also shown.

Sketch of the in-situ XRD and dilatometer setup used at Desy. A picture of a CGO: Cu bar sample, the thermal expansion recorded by the dilatometer. The interior of the dilatometer and the diffracted rings are also shown.