Single crystals of superconducting SmFeAsO Hx

Structure and properties

A. Pisoni, S. Katrych, A. Arakcheeva, T. Verebélyi, M. Bokor, P. Huang, R. Gaál, P. Matus, J. Karpinski, L. Forró

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report the synthesis, structure, and superconducting properties of single crystals of SmFeAsOHx. The crystals were grown at high pressure and high temperature using a cubic anvil technique. H1-NMR studies confirm the presence of H atoms in the samples. Single crystal x-ray diffraction analyses demonstrate a remarkable disorder in the Sm2O2 layers induced by hydrogen incorporation and reveal that the H positions are compatible with a H2O-like geometry inside the crystals. We have measured the magnetotransport properties of SmFeAsOHx single crystals with x=0.07, 0.11, and 0.16 in magnetic field up to 16 T, oriented along the two main crystallographic directions. The results show an increase of the critical temperature with hydrogen content. The zero-temperature upper critical fields and the magnetic anisotropy are calculated as a function of the hydrogen content. SmFeAsOHx crystals present significantly higher upper critical fields and magnetic anisotropies compared to SmFeAsO1-xFx compounds.

Original languageEnglish
Article number024525
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume94
Issue number2
DOIs
Publication statusPublished - Jul 29 2016

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Hydrogen
Magnetic anisotropy
Single crystals
Crystals
single crystals
hydrogen
crystals
Galvanomagnetic effects
anisotropy
anvils
Temperature
critical temperature
x ray diffraction
Diffraction
Nuclear magnetic resonance
disorders
Magnetic fields
X rays
Atoms
nuclear magnetic resonance

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Single crystals of superconducting SmFeAsO Hx : Structure and properties. / Pisoni, A.; Katrych, S.; Arakcheeva, A.; Verebélyi, T.; Bokor, M.; Huang, P.; Gaál, R.; Matus, P.; Karpinski, J.; Forró, L.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 94, No. 2, 024525, 29.07.2016.

Research output: Contribution to journalArticle

Pisoni, A, Katrych, S, Arakcheeva, A, Verebélyi, T, Bokor, M, Huang, P, Gaál, R, Matus, P, Karpinski, J & Forró, L 2016, 'Single crystals of superconducting SmFeAsO Hx: Structure and properties', Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 2, 024525. https://doi.org/10.1103/PhysRevB.94.024525
Pisoni, A. ; Katrych, S. ; Arakcheeva, A. ; Verebélyi, T. ; Bokor, M. ; Huang, P. ; Gaál, R. ; Matus, P. ; Karpinski, J. ; Forró, L. / Single crystals of superconducting SmFeAsO Hx : Structure and properties. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 94, No. 2.
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