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arXiv · 0909.4600

Structural properties and superconductivity of SrFe2As2-xPx and CaFe2As2-yPy

H. L. Shi·H. X. Yang·H. F. Tian·J. B. Lu·Z. W. Wang·Y. B. Qin·Y. J. Song·J. Q. Li*
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Abstract

The SrFe2As2-xPx and CaFe2As2-yPy materials were prepared by a solid state reaction method. X-ray diffraction measurements indicate the single-phase samples can be successfully obtained for SrFe2As2-xPx and CaFe2As2-yPy samples. Clear contraction of the lattice parameters are clearly determined due to the relatively smaller P ions substation for As. The SDW instability associated with tetragonal to orthorhombic phase transition is suppressed visibly in both systems following with the increase of P contents. The highest superconducting transitions are respectively observed at about 27 K in SrFe2As1.3P0.7 and at about 13 K in CaFe2As1.7P0.3.

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H. L. Shi, H. X. Yang, H. F. Tian, J. B. Lu, Z. W. Wang, Y. B. Qin, Y. J. Song, J. Q. Li*. 2009-09-25. Structural properties and superconductivity of SrFe2As2-xPx and CaFe2As2-yPy. https://doi.org/10.1088/0953-8984%2F22%2F12%2F125702

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