Concepedia

Superconductivity in Impurity-Induced Tetragonal YBa<sub>2</sub>(Cu<sub>1-x</sub>Fe<sub>x</sub>)<sub>3</sub>O<sub>7-δ</sub>

Y. Maeno, Masatsune Kato, Yuji Aoki, T. Fujita

Japanese Journal of Applied Physics · 1987 · 99 citations · 12 references

DOI

Concepts

Abstract

Lattice deformation and superconductivity in YBa 2 (Cu 1- x Fe x ) 3 O 7-δ are studied in detail. An orthorhombic to tetragonal phase change is induced at x c ≈0.02. A phase diagram in the temperature-concentration plane clarifies two regions of the tetragonal phase: one is, as known previously, induced mainly by the release of oxygen, and the other by the direct action of impurities. Bulk nature of superconductivity in the novel impurity-induced tetragonal phase is confirmed by magnetic susceptibility measurements.

References

12

Possible highT c superconductivity in the Ba?La?Cu?O system

J. G. Bednorz, K. A. M�ller · The European Physical Journal B · 1986 · 14.2K citations

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Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressure

Meiying Wu, J. R. Ashburn, C. J. Torng et al. · Physical Review Letters · 1987 · 7.1K citations · Full text

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Effect of transition-metal elements on the superconductivity of Y-Ba-Cu-O

Gang Xiao, Frederick H. Streitz, A. Gavrin et al. · Physical review. B, Condensed matter · 1987 · 448 citations

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Substitution for copper in a high-Tc superconductor YBa2Cu3O7–δ

Y. Maeno, Tsukasa Tomita, M. Kyogoku et al. · Nature · 1987 · 385 citations

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Crystallographic, Magnetic, and Superconductive Transitions in (La<sub>1-x</sub>Ba<sub>x</sub>)<sub>2</sub>CuO<sub>4-y</sub>

T. Fujita, Yuji Aoki, Y. Maeno et al. · Japanese Journal of Applied Physics · 1987 · 186 citations

, , +14