High pressure crystal growth of the antiperovskite centrosymmetric superconductor SrPt3P

Publication date: 1 December 2016
Source:Journal of Crystal Growth, Volume 455
Author(s): Nikolai D. Zhigadlo
Bulk single crystals of SrPt3P have been grown for the first time by a self-flux method at 2GPa and 1500°C using the cubic-anvil, high-pressure and high-temperature technique. The grown black crystals were found to have either a plate-like or pillar-like morphology with maximum dimensions of ~1×0.6×0.3mm³. According to a goniometric study the crystals are elongated in the ab-plane with the c-axis perpendicular to the plane. The crystal structure was confirmed by X-ray diffraction (P4/nmm, #129, Z=2, a=b=5.7927(2)Å, c=5.3729(2)Å and V=180.290(11)ų). Temperature dependent susceptibility measurements showed a single-phase behaviour and a superconducting transition temperature of 8.6K. This value for single crystals is slightly higher than that previously reported for polycrystalline SrPt3P. The sharpness of the susceptibility drop (∆Tc=0.07K) supports a high homogeneity of obtained crystals.

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