Structural properties and superconductivity of SrFe2As 2 - XPx (0.0 ≤ x ≤ 1.0) and CaFe2As 2 - YPy (0.0 ≤ y ≤ 0.3)

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

doi:10.1088/0953-8984/22/12/125702

Structural properties and superconductivity of SrFe₂As _{2 - X}P_x (0.0 ≤ x ≤ 1.0) and CaFe₂As _{2 - Y}P_y (0.0 ≤ y ≤ 0.3)

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

CAS - Institute of Physics

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Abstract

The SrFe₂As_{2 - x}P_x (0.0 ≤ x ≤ 1.0) and CaFe₂As_{2 - y}P_y (0.0 ≤ y ≤ 0.3) materials were prepared by a solid-state reaction method. X-ray diffraction measurements indicate that the single-phase samples can be successfully obtained for SrFe₂As_{2 - x}P_x (0.0 ≤ x ≤ 0.8) and CaFe₂As_{2 - y}P_y (0.0 ≤ y ≤ 0.3). Visible contraction of the lattice parameters is determined due to the relatively smaller radius of P ions in comparison with that of As. The spin-density-wave (SDW) instability associated with the tetragonal to orthorhombic phase transition is suppressed noticeably in both systems following the increase in P content. The highest superconducting transitions are observed at about 27K in SrFe₂As_1.3P_0.7 and at about 13K in CaFe ₂As_1.925P_0.075, respectively. Structural analysis suggests that lattice contraction could notably affect the superconductivity in these materials.

Original language	English
Article number	125702
Journal	Journal of Physics Condensed Matter
Volume	22
Issue number	12
DOIs	https://doi.org/10.1088/0953-8984/22/12/125702
Publication status	Published - 2010
Externally published	Yes

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Shi, H. L., Yang, H. X., Tian, H. F., Lu, J. B., Wang, Z. W., Qin, Y. B., Song, Y. J., & Li, J. Q. (2010). Structural properties and superconductivity of SrFe₂As _{2 - X}P_x (0.0 ≤ x ≤ 1.0) and CaFe₂As _{2 - Y}P_y (0.0 ≤ y ≤ 0.3). Journal of Physics Condensed Matter, 22(12), Article 125702. https://doi.org/10.1088/0953-8984/22/12/125702

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title = "Structural properties and superconductivity of SrFe2As 2 - XPx (0.0 ≤ x ≤ 1.0) and CaFe2As 2 - YPy (0.0 ≤ y ≤ 0.3)",

abstract = "The SrFe2As2 - xPx (0.0 ≤ x ≤ 1.0) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3) materials were prepared by a solid-state reaction method. X-ray diffraction measurements indicate that the single-phase samples can be successfully obtained for SrFe2As2 - xPx (0.0 ≤ x ≤ 0.8) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3). Visible contraction of the lattice parameters is determined due to the relatively smaller radius of P ions in comparison with that of As. The spin-density-wave (SDW) instability associated with the tetragonal to orthorhombic phase transition is suppressed noticeably in both systems following the increase in P content. The highest superconducting transitions are observed at about 27K in SrFe2As1.3P0.7 and at about 13K in CaFe 2As1.925P0.075, respectively. Structural analysis suggests that lattice contraction could notably affect the superconductivity in these materials.",

author = "Shi, {H. L.} and Yang, {H. X.} and Tian, {H. F.} and Lu, {J. B.} and Wang, {Z. W.} and Qin, {Y. B.} and Song, {Y. J.} and Li, {J. Q.}",

year = "2010",

doi = "10.1088/0953-8984/22/12/125702",

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T1 - Structural properties and superconductivity of SrFe2As 2 - XPx (0.0 ≤ x ≤ 1.0) and CaFe2As 2 - YPy (0.0 ≤ y ≤ 0.3)

AU - Shi, H. L.

AU - Yang, H. X.

AU - Tian, H. F.

AU - Lu, J. B.

AU - Wang, Z. W.

AU - Qin, Y. B.

AU - Song, Y. J.

AU - Li, J. Q.

PY - 2010

Y1 - 2010

N2 - The SrFe2As2 - xPx (0.0 ≤ x ≤ 1.0) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3) materials were prepared by a solid-state reaction method. X-ray diffraction measurements indicate that the single-phase samples can be successfully obtained for SrFe2As2 - xPx (0.0 ≤ x ≤ 0.8) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3). Visible contraction of the lattice parameters is determined due to the relatively smaller radius of P ions in comparison with that of As. The spin-density-wave (SDW) instability associated with the tetragonal to orthorhombic phase transition is suppressed noticeably in both systems following the increase in P content. The highest superconducting transitions are observed at about 27K in SrFe2As1.3P0.7 and at about 13K in CaFe 2As1.925P0.075, respectively. Structural analysis suggests that lattice contraction could notably affect the superconductivity in these materials.

AB - The SrFe2As2 - xPx (0.0 ≤ x ≤ 1.0) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3) materials were prepared by a solid-state reaction method. X-ray diffraction measurements indicate that the single-phase samples can be successfully obtained for SrFe2As2 - xPx (0.0 ≤ x ≤ 0.8) and CaFe2As2 - yPy (0.0 ≤ y ≤ 0.3). Visible contraction of the lattice parameters is determined due to the relatively smaller radius of P ions in comparison with that of As. The spin-density-wave (SDW) instability associated with the tetragonal to orthorhombic phase transition is suppressed noticeably in both systems following the increase in P content. The highest superconducting transitions are observed at about 27K in SrFe2As1.3P0.7 and at about 13K in CaFe 2As1.925P0.075, respectively. Structural analysis suggests that lattice contraction could notably affect the superconductivity in these materials.

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JO - Journal of Physics Condensed Matter

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Structural properties and superconductivity of SrFe₂As _{2 - X}P_x (0.0 ≤ x ≤ 1.0) and CaFe₂As _{2 - Y}P_y (0.0 ≤ y ≤ 0.3)

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