Microstructures of La1.85Sr0.15CuO4 doped with Ni at high doping level

X. S. Wu; S. S. Jiang; F. M. Pan; J. Lin; N. Xu; Mao Zhiqiang; Xu Gaoji; Zhang Yuheng

doi:10.1016/S0921-4534(96)00581-3

Microstructures of La_1.85Sr_0.15CuO₄ doped with Ni at high doping level

X. S. Wu, S. S. Jiang, F. M. Pan, J. Lin, N. Xu, Mao Zhiqiang, Xu Gaoji, Zhang Yuheng

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

10 Scopus citations

Abstract

Ceramic superconductors of La_1.85Sr_0.15Cu_1-yNi_yO₄ with 0.00 ≤ y ≤ 0.50 were synthesized. There is no impurity phase detected in the entire Ni doped region. The structure of these Ni-doped samples was characterized by X-ray diffraction studies. The atomic structural parameters were obtained by Rietveld refinements for the Ni-doped samples with y ≤ 0.50. Some meaningful bond distances were determined according to the refined results. According to the variations of some bond distances with y, the whole doping range could be divided into two regions: low doping level (LDL) and high doping level (HDL). The bond length between the two apical oxygen atoms in the CuO₆ octahedra for the Ni-doped samples increased with increasing content of Ni in the LDL, and decreased in the HDL. The average bond distance of La-O was not changed in the whole doping region. The metal-insulator transition was also observed in this Ni-doped system.

Original language	English (US)
Pages (from-to)	331-338
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	271
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(96)00581-3
State	Published - Nov 10 1996

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(96)00581-3

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title = "Microstructures of La1.85Sr0.15CuO4 doped with Ni at high doping level",

abstract = "Ceramic superconductors of La1.85Sr0.15Cu1-yNiyO4 with 0.00 ≤ y ≤ 0.50 were synthesized. There is no impurity phase detected in the entire Ni doped region. The structure of these Ni-doped samples was characterized by X-ray diffraction studies. The atomic structural parameters were obtained by Rietveld refinements for the Ni-doped samples with y ≤ 0.50. Some meaningful bond distances were determined according to the refined results. According to the variations of some bond distances with y, the whole doping range could be divided into two regions: low doping level (LDL) and high doping level (HDL). The bond length between the two apical oxygen atoms in the CuO6 octahedra for the Ni-doped samples increased with increasing content of Ni in the LDL, and decreased in the HDL. The average bond distance of La-O was not changed in the whole doping region. The metal-insulator transition was also observed in this Ni-doped system.",

author = "Wu, {X. S.} and Jiang, {S. S.} and Pan, {F. M.} and J. Lin and N. Xu and Mao Zhiqiang and Xu Gaoji and Zhang Yuheng",

year = "1996",

month = nov,

day = "10",

doi = "10.1016/S0921-4534(96)00581-3",

language = "English (US)",

volume = "271",

pages = "331--338",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

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T1 - Microstructures of La1.85Sr0.15CuO4 doped with Ni at high doping level

AU - Wu, X. S.

AU - Jiang, S. S.

AU - Pan, F. M.

AU - Lin, J.

AU - Xu, N.

AU - Zhiqiang, Mao

AU - Gaoji, Xu

AU - Yuheng, Zhang

PY - 1996/11/10

Y1 - 1996/11/10

N2 - Ceramic superconductors of La1.85Sr0.15Cu1-yNiyO4 with 0.00 ≤ y ≤ 0.50 were synthesized. There is no impurity phase detected in the entire Ni doped region. The structure of these Ni-doped samples was characterized by X-ray diffraction studies. The atomic structural parameters were obtained by Rietveld refinements for the Ni-doped samples with y ≤ 0.50. Some meaningful bond distances were determined according to the refined results. According to the variations of some bond distances with y, the whole doping range could be divided into two regions: low doping level (LDL) and high doping level (HDL). The bond length between the two apical oxygen atoms in the CuO6 octahedra for the Ni-doped samples increased with increasing content of Ni in the LDL, and decreased in the HDL. The average bond distance of La-O was not changed in the whole doping region. The metal-insulator transition was also observed in this Ni-doped system.

AB - Ceramic superconductors of La1.85Sr0.15Cu1-yNiyO4 with 0.00 ≤ y ≤ 0.50 were synthesized. There is no impurity phase detected in the entire Ni doped region. The structure of these Ni-doped samples was characterized by X-ray diffraction studies. The atomic structural parameters were obtained by Rietveld refinements for the Ni-doped samples with y ≤ 0.50. Some meaningful bond distances were determined according to the refined results. According to the variations of some bond distances with y, the whole doping range could be divided into two regions: low doping level (LDL) and high doping level (HDL). The bond length between the two apical oxygen atoms in the CuO6 octahedra for the Ni-doped samples increased with increasing content of Ni in the LDL, and decreased in the HDL. The average bond distance of La-O was not changed in the whole doping region. The metal-insulator transition was also observed in this Ni-doped system.

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DO - 10.1016/S0921-4534(96)00581-3

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JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

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ER -

Microstructures of La_1.85Sr_0.15CuO₄ doped with Ni at high doping level

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