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arXiv · 0808.0289

Superconductivity and Magnetism in REFeAsO1-xFx (RE=Rare Earth Elements)

K Kadowaki·T Goya·T Mochiji·S V Chong
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Abstract

Fluoride-doped iron-based oxypnictides containing rare-earth gadolinium (GdFeAsO0.8F0.2) and co-doping with yttrium (Gd0.8Y0.2FeAsO0.8F0.2) have been prepared via conventional solid state reaction at ambient pressure. The non-yttrium substituted oxypnictide show superconducting transition as high as 43.9 K from temperature dependent resistance measurements with the Meissner effect observed at a lower temperature of 40.8 K from temperature dependent magnetization measurements. By replacing a small amount of gadolinium with yttrium Tc was observed to be lowered by 10 K which might be caused by a change in the electronic or magnetic structures since the crystal structure was not altered.

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K Kadowaki, T Goya, T Mochiji, S V Chong. 2008-08-04. Superconductivity and Magnetism in REFeAsO1-xFx (RE=Rare Earth Elements). https://doi.org/10.1088/1742-6596/150/5/052088

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