Observation of the Epitaxial Satellite Phase in the Superconducting RuSr2Eu1.5Ce0.5Cu2O10 Ceramic Samples

V. V. Petrykin; M. Osada; M. Kakihana; Y. Tanaka; H. Yasuoka; Y. Ueki; M. Abe

doi:10.1021/cm030052y

Observation of the Epitaxial Satellite Phase in the Superconducting RuSr₂Eu_1.5Ce_0.5Cu₂O₁₀ Ceramic Samples

V. V. Petrykin^*, M. Osada, M. Kakihana, Y. Tanaka, H. Yasuoka, Y. Ueki, M. Abe

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

We have compared nonsuperconducting and superconducting ceramic samples of RuSr₂Eu_1.5Ce_0.5Cu₂O₁₀ prepared by a polymerizable complex method using Raman spectroscopy and electron diffraction. The superconductivity in these ruthenocuprate samples was associated with ruthenium deficiency. It turned out that superconducting samples contain an epitaxial satellite phase having lattice parameters of a = 3.8407Å, c = 11.417Å (a/c ≈ 3), whereas Raman spectra revealed the presence of carbonate groups, which coordinate metal ions in a manner similar to that in the superconducting carboxycuprates. Therefore, we speculate that the satellite phase is EuSr₂Cu_3-x(CO ₃)_xO_7+z doped with Ru into Cu chain site and it might be responsible for superconductivity. The intergrowth of such a phase was confirmed by HREM.

Original language	English
Pages (from-to)	4417-4423
Number of pages	7
Journal	Chemistry of Materials
Volume	15
Issue number	23
DOIs	https://doi.org/10.1021/cm030052y
Publication status	Published - 2003 Nov 18
Externally published	Yes

ASJC Scopus subject areas

Materials Chemistry
Materials Science(all)

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title = "Observation of the Epitaxial Satellite Phase in the Superconducting RuSr2Eu1.5Ce0.5Cu2O10 Ceramic Samples",

abstract = "We have compared nonsuperconducting and superconducting ceramic samples of RuSr2Eu1.5Ce0.5Cu2O10 prepared by a polymerizable complex method using Raman spectroscopy and electron diffraction. The superconductivity in these ruthenocuprate samples was associated with ruthenium deficiency. It turned out that superconducting samples contain an epitaxial satellite phase having lattice parameters of a = 3.8407{\AA}, c = 11.417{\AA} (a/c ≈ 3), whereas Raman spectra revealed the presence of carbonate groups, which coordinate metal ions in a manner similar to that in the superconducting carboxycuprates. Therefore, we speculate that the satellite phase is EuSr2Cu3-x(CO 3)xO7+z doped with Ru into Cu chain site and it might be responsible for superconductivity. The intergrowth of such a phase was confirmed by HREM.",

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T1 - Observation of the Epitaxial Satellite Phase in the Superconducting RuSr2Eu1.5Ce0.5Cu2O10 Ceramic Samples

AU - Petrykin, V. V.

AU - Osada, M.

AU - Kakihana, M.

AU - Tanaka, Y.

AU - Yasuoka, H.

AU - Ueki, Y.

AU - Abe, M.

PY - 2003/11/18

Y1 - 2003/11/18

N2 - We have compared nonsuperconducting and superconducting ceramic samples of RuSr2Eu1.5Ce0.5Cu2O10 prepared by a polymerizable complex method using Raman spectroscopy and electron diffraction. The superconductivity in these ruthenocuprate samples was associated with ruthenium deficiency. It turned out that superconducting samples contain an epitaxial satellite phase having lattice parameters of a = 3.8407Å, c = 11.417Å (a/c ≈ 3), whereas Raman spectra revealed the presence of carbonate groups, which coordinate metal ions in a manner similar to that in the superconducting carboxycuprates. Therefore, we speculate that the satellite phase is EuSr2Cu3-x(CO 3)xO7+z doped with Ru into Cu chain site and it might be responsible for superconductivity. The intergrowth of such a phase was confirmed by HREM.

AB - We have compared nonsuperconducting and superconducting ceramic samples of RuSr2Eu1.5Ce0.5Cu2O10 prepared by a polymerizable complex method using Raman spectroscopy and electron diffraction. The superconductivity in these ruthenocuprate samples was associated with ruthenium deficiency. It turned out that superconducting samples contain an epitaxial satellite phase having lattice parameters of a = 3.8407Å, c = 11.417Å (a/c ≈ 3), whereas Raman spectra revealed the presence of carbonate groups, which coordinate metal ions in a manner similar to that in the superconducting carboxycuprates. Therefore, we speculate that the satellite phase is EuSr2Cu3-x(CO 3)xO7+z doped with Ru into Cu chain site and it might be responsible for superconductivity. The intergrowth of such a phase was confirmed by HREM.

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Observation of the Epitaxial Satellite Phase in the Superconducting RuSr₂Eu_1.5Ce_0.5Cu₂O₁₀ Ceramic Samples

Abstract

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