Structure and superconductivity in new Nb-based cuprates (Nb,Ti,Cu)Sr2EuCu2Oz

Lee, H. K.; Kim, Y.I.

doi:10.1016/j.jallcom.2015.06.001

Journal of Alloys and Compounds

2015

DOI: 10.1016/j.jallcom.2015.06.001

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Structure and superconductivity in new Nb-based cuprates (Nb,Ti,Cu)Sr2EuCu2Oz

H. K. Lee

Y.I. Kim

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Cited by 2 publications

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ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.

Lee

Kim

2015

ChemInform

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Structure and Superconductivity in New Nb-Based Cuprates (Nb,Ti,Cu)Sr 2EuCu2Oz. -Polycrystalline samples of (Nb1-xCux)Sr2EuCu2Oz (0  x  0.5) and (Nb 0.9-xTi0.1Cux)Sr2EuCu2Oz (0  x  0.4) are prepared by calcination of stoichiometric amounts of the metal oxides in air (1010 C, 7-10 h) followed by sintering in O2 (1. 1050 C, 12 h, 2. 1060 C, 15 h). No superconductivity is observed in the resistivity measurements of Ti-free Cu-doped samples and Ti-doped samples. In contrast, the Ti/Cu co-doped sample with x = 0.4 shows a superconducting transition in both electric resistivity and magnetization measurements with a T c (onset) of 30 K. Rietveld refinements of XRD data for the Ti/Cu co-doped samples shows a structural transformation from tetragonal (space group P4/mmm) to orthorhombic (space group Ima2) with the weight fraction of the orthorhombic phase increasing with Cu level. The superconductivity induced by Ti/Cu co-doping is discussed in terms of the change in hole concentration and the structural transformation. -(LEE*, H. K.; KIM, Y. I.; J. Alloys Compd. 646 (2015) 517-521, http://dx.

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ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.

Lee

Kim

2015

ChemInform

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Crystal Structure of (Lu1−x Ca x )Ba2Cu3O7−z (x = 0, 0.2) Superconducting Compounds Studied by Neutron Powder Diffraction

Lee

Kim

2017

J Supercond Nov Magn

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Structure and superconductivity in new Nb-based cuprates (Nb,Ti,Cu)Sr2EuCu2Oz

Cited by 2 publications

References 21 publications

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.

Crystal Structure of (Lu1−x Ca x )Ba2Cu3O7−z (x = 0, 0.2) Superconducting Compounds Studied by Neutron Powder Diffraction

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Structure and superconductivity in new Nb-based cuprates (Nb,Ti,Cu)Sr2EuCu2Oz

Cited by 2 publications

References 21 publications

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr2EuCu2Oz.

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr2EuCu2Oz.

Crystal Structure of (Lu1−x Ca x )Ba2Cu3O7−z (x = 0, 0.2) Superconducting Compounds Studied by Neutron Powder Diffraction

Contact Info

Product

Resources

About

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.

ChemInform Abstract: Structure and Superconductivity in New Nb‐Based Cuprates (Nb,Ti,Cu)Sr₂EuCu₂O_z.