Evidence for negative thermal expansion in the superconducting precursor phase SmFeAsO

The fluorine-doped rare-earth iron oxypnictide series SmFeAsO\(_{1-x}\)F\(_x\) (0 \(\leq x \leq\) 0.10) was investigated with high resolution powder x-ray scattering. In agreement with previous studies, the parent compound SmFeAsO exhibits a tetragonal-to-orthorhombic structural distortion at T\(\rm...

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Veröffentlicht in:	arXiv.org 2018-02
Hauptverfasser:	Zhou, H D, Sarte, P M, Conner, B S, Balicas, L, Wiebe, C R, Chen, X H, T Wu, G Wu, Liu, R H, Chen, H, Fang, D F
Format:	Artikel
Sprache:	eng
Schlagworte:	Distortion Fluorine Iron Phase diagrams Physics - Superconductivity Rare earth elements Spin density waves Stability Superconductivity Temperature Temperature dependence Thermal expansion Unit cell X-ray scattering
Online-Zugang:	Volltext
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