Oxygen Content, Crystal Structure, and Superconductivity in YSr2Cu2.75Mo0.25O7+δ

Guanghan Cao; Yitai Qian; Qingqiao Wei; Zuyao Chen; Bin Lu; Zhiqiang Mao; Lei Shi; Yuheng Zhang

doi:10.1002/pssb.2221890119

Oxygen Content, Crystal Structure, and Superconductivity in YSr₂Cu_2.75Mo_0.25O_7+δ

Guanghan Cao, Yitai Qian, Qingqiao Wei, Zuyao Chen, Bin Lu, Zhiqiang Mao, Lei Shi, Yuheng Zhang

Research output: Contribution to journal › Article › peer-review

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Abstract

Polycrystalline samples of YSr₂Cu_2.75Mo_0.25O_7+δ with different oxygen contents are investigated by powder X‐ray diffraction and selected area electron diffraction. The temperature dependence of resistivity and the oxygen content are determined. The air‐sintered sample is tetragonal and semiconductive, while the O₂‐sintered sample is orthorhombic and superconducting at 26 K. It is suggested that the structural variation originates from the (Cu(1), Mo)O_1+δ layers and the superconductivity is induced by the excess oxygen rather than charge redistribution between Cu(1) and Cu(2).

Original language	English (US)
Pages (from-to)	171-175
Number of pages	5
Journal	physica status solidi (b)
Volume	189
Issue number	1
DOIs	https://doi.org/10.1002/pssb.2221890119
State	Published - May 1 1995

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "Polycrystalline samples of YSr2Cu2.75Mo0.25O7+δ with different oxygen contents are investigated by powder X‐ray diffraction and selected area electron diffraction. The temperature dependence of resistivity and the oxygen content are determined. The air‐sintered sample is tetragonal and semiconductive, while the O2‐sintered sample is orthorhombic and superconducting at 26 K. It is suggested that the structural variation originates from the (Cu(1), Mo)O1+δ layers and the superconductivity is induced by the excess oxygen rather than charge redistribution between Cu(1) and Cu(2).",

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T1 - Oxygen Content, Crystal Structure, and Superconductivity in YSr2Cu2.75Mo0.25O7+δ

AU - Cao, Guanghan

AU - Qian, Yitai

AU - Wei, Qingqiao

AU - Chen, Zuyao

AU - Lu, Bin

AU - Mao, Zhiqiang

AU - Shi, Lei

AU - Zhang, Yuheng

PY - 1995/5/1

Y1 - 1995/5/1

N2 - Polycrystalline samples of YSr2Cu2.75Mo0.25O7+δ with different oxygen contents are investigated by powder X‐ray diffraction and selected area electron diffraction. The temperature dependence of resistivity and the oxygen content are determined. The air‐sintered sample is tetragonal and semiconductive, while the O2‐sintered sample is orthorhombic and superconducting at 26 K. It is suggested that the structural variation originates from the (Cu(1), Mo)O1+δ layers and the superconductivity is induced by the excess oxygen rather than charge redistribution between Cu(1) and Cu(2).

AB - Polycrystalline samples of YSr2Cu2.75Mo0.25O7+δ with different oxygen contents are investigated by powder X‐ray diffraction and selected area electron diffraction. The temperature dependence of resistivity and the oxygen content are determined. The air‐sintered sample is tetragonal and semiconductive, while the O2‐sintered sample is orthorhombic and superconducting at 26 K. It is suggested that the structural variation originates from the (Cu(1), Mo)O1+δ layers and the superconductivity is induced by the excess oxygen rather than charge redistribution between Cu(1) and Cu(2).

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Oxygen Content, Crystal Structure, and Superconductivity in YSr₂Cu_2.75Mo_0.25O_7+δ

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