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arXiv · 1212.5531

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
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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.

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T. Stürzer, G. M. Friederichs, H. Luetkens, A. Amato, H. -H. Klauss, F. Winter, R. Pöttgen, D. Johrendt. 2012-12-21. Structural and magnetic phase transitions in triclinic Ca10(FeAs)10(Pt3As8). https://doi.org/10.1088/0953-8984%2F25%2F12%2F122203

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