Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8)

T. Stürzer; G. M. Friederichs; H. Luetkens; A. Amato; H. -H. Klauss; F. Winter; R. Pöttgen; D. Johrendt

doi:10.1088/0953-8984/25/12/122203

Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8)

Superconductivity 2013-03-05 v1 Strongly Correlated Electrons

Authors: T. Stürzer , G. M. Friederichs , H. Luetkens , A. Amato , H. -H. Klauss , F. Winter , R. Pöttgen , D. Johrendt

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Abstract

We report the structural and magnetic phase transitions of triclinic Ca10(FeAs)10(Pt3As8). High-resolution X-ray powder diffraction reveals splitting of the in-plane (a,b) lattice parameters at Ts ~ 120 K. Platinum-doping weakens the distortion and shifts the transition temperature to 80 K in Ca10(Fe1-xPt_xAs)10(Pt3As8) with x = 0.03. muSR experiments show the onset of magnetic order near Ts and a broad magnetic phase transition. No symmetry breaking is associated to the structural transition in Ca10(FeAs)10(Pt3As8) in contrast to the other parent compounds of iron arsenide superconductors.

Keywords

structural phase transition magnetic phase transition iron arsenide superconductors triclinic crystal system platinum doping muSR x-ray powder diffraction

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@article{arxiv.1212.5531,
  title  = {Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8)},
  author = {T. Stürzer and G. M. Friederichs and H. Luetkens and A. Amato and H. -H. Klauss and F. Winter and R. Pöttgen and D. Johrendt},
  journal= {arXiv preprint arXiv:1212.5531},
  year   = {2013}
}

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3 pages, 5 figures

Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8)

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