Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique

H. E. Horng; J. C. Jao; M. H. Hsieh; H. C. Yang; B. C. Yao; C. H. Chen

doi:10.1016/0921-4534(89)90248-7

Study of superconducting properties of oxygen deficient GdBa₂Cu₃O_7-y by a heating cycle technique

H. E. Horng^*, J. C. Jao, M. H. Hsieh, H. C. Yang, B. C. Yao, C. H. Chen

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

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

3 Citations (Scopus)

Abstract

We have studied oxygen deficient GdBa₂Cu₃O_7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λ_tr=0.31 which suggests a weak electron-phonon coupling in high-T_c oxides.

Original language	English
Pages (from-to)	480-484
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	158
Issue number	3
DOIs	https://doi.org/10.1016/0921-4534(89)90248-7
Publication status	Published - 1989 May 1

ASJC Scopus subject areas

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

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title = "Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique",

abstract = "We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.",

author = "Horng, {H. E.} and Jao, {J. C.} and Hsieh, {M. H.} and Yang, {H. C.} and Yao, {B. C.} and Chen, {C. H.}",

year = "1989",

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doi = "10.1016/0921-4534(89)90248-7",

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

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T1 - Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique

AU - Horng, H. E.

AU - Jao, J. C.

AU - Hsieh, M. H.

AU - Yang, H. C.

AU - Yao, B. C.

AU - Chen, C. H.

PY - 1989/5/1

Y1 - 1989/5/1

N2 - We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.

AB - We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.

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VL - 158

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JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 3

ER -

Study of superconducting properties of oxygen deficient GdBa₂Cu₃O_7-y by a heating cycle technique

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