Transport and thermodynamic properties of (Ca1-xLa x)10(Pt3As8)(Fe2As 2)5 superconductors

N. Ni, W. E. Straszheim, D. J. Williams, M. A. Tanatar, R. Prozorov, E. D. Bauer, F. Ronning, J. D. Thompson, R. J. Cava

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Single crystals of (Ca1-xLax)10(Pt 3As8)(Fe2As2)5 (x=0-0.182) superconductors have been grown and characterized by x-ray, microprobe, transport, and thermodynamic measurements. Features in the magnetic susceptibility, specific heat, and two kinks in the derivative of the electrical resistivity around 100 K in the x=0 compound support the existence of decoupled structural and magnetic phase transitions. With La doping, the structural/magnetic phase transitions are suppressed and a half dome of superconductivity with a maximal Tc around 26 K is observed in the temperature-concentration phase diagram.

Original languageEnglish (US)
Article number060507
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number6
StatePublished - Feb 22 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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