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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AU - Huang, P.

AU - Gaál, R.

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