Assignment of fluorine sites in (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx

M. Faiz; N. M. Hamdan

doi:10.1016/S0368-2048(00)00174-2

Assignment of fluorine sites in (Tl_0.5Pb_0.5)Sr_1.6Ba_0.4Ca₂Cu₃O_y/F_x

M. Faiz^*, N. M. Hamdan

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

5 Scopus citations

Abstract

Fluorine 1s and Cu 2p core level binding energies of (Tl_0.5Pb_0.5)Sr_1.6Ba_0.4Ca₂Cu₃O_y/F_x for nominal x = 0.0, 1.0, 2.2 and 3.0 were measured by X-ray photoelectron spectroscopy (XPS) in order to identify the F site in the overdoped superconductors. Detailed data analysis indicate that about two thirds of the incorporated F replace O in Cu-O planes of the Tl-1223 structure. Most of the remaining one third of F replaces O in the Ba/Sr-O planes and a small amount of F substitutes for O in the Tl/Pb-O planes of Tl-1223 structure. Cu 2p_3/2 binding energy was found to be decreasing with increasing x. This indicates that the valency of Cu in Tl-1223/F_x decreases as x increases. The reduction of charge carriers in the overdoped high temperature superconductors is discussed in terms of anion substitution.

Original language	English
Pages (from-to)	283-291
Number of pages	9
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	107
Issue number	3
DOIs	https://doi.org/10.1016/S0368-2048(00)00174-2
State	Published - Jun 2000

Bibliographical note

Funding Information:
We would like to acknowledge the support provided by the Physics Department, King Fahd University of Petroleum and Minerals for this study. Also we thank Mr. Munawwar Khan for the technical support.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/S0368-2048(00)00174-2

Cite this

@article{49c7971780564563b689b3854c5f9dc4,

title = "Assignment of fluorine sites in (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx",

abstract = "Fluorine 1s and Cu 2p core level binding energies of (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx for nominal x = 0.0, 1.0, 2.2 and 3.0 were measured by X-ray photoelectron spectroscopy (XPS) in order to identify the F site in the overdoped superconductors. Detailed data analysis indicate that about two thirds of the incorporated F replace O in Cu-O planes of the Tl-1223 structure. Most of the remaining one third of F replaces O in the Ba/Sr-O planes and a small amount of F substitutes for O in the Tl/Pb-O planes of Tl-1223 structure. Cu 2p3/2 binding energy was found to be decreasing with increasing x. This indicates that the valency of Cu in Tl-1223/Fx decreases as x increases. The reduction of charge carriers in the overdoped high temperature superconductors is discussed in terms of anion substitution.",

author = "M. Faiz and Hamdan, \{N. M.\}",

note = "Funding Information: We would like to acknowledge the support provided by the Physics Department, King Fahd University of Petroleum and Minerals for this study. Also we thank Mr. Munawwar Khan for the technical support.",

year = "2000",

month = jun,

doi = "10.1016/S0368-2048(00)00174-2",

language = "English",

volume = "107",

pages = "283--291",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

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T1 - Assignment of fluorine sites in (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx

AU - Faiz, M.

AU - Hamdan, N. M.

N1 - Funding Information: We would like to acknowledge the support provided by the Physics Department, King Fahd University of Petroleum and Minerals for this study. Also we thank Mr. Munawwar Khan for the technical support.

PY - 2000/6

Y1 - 2000/6

N2 - Fluorine 1s and Cu 2p core level binding energies of (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx for nominal x = 0.0, 1.0, 2.2 and 3.0 were measured by X-ray photoelectron spectroscopy (XPS) in order to identify the F site in the overdoped superconductors. Detailed data analysis indicate that about two thirds of the incorporated F replace O in Cu-O planes of the Tl-1223 structure. Most of the remaining one third of F replaces O in the Ba/Sr-O planes and a small amount of F substitutes for O in the Tl/Pb-O planes of Tl-1223 structure. Cu 2p3/2 binding energy was found to be decreasing with increasing x. This indicates that the valency of Cu in Tl-1223/Fx decreases as x increases. The reduction of charge carriers in the overdoped high temperature superconductors is discussed in terms of anion substitution.

AB - Fluorine 1s and Cu 2p core level binding energies of (Tl0.5Pb0.5)Sr1.6Ba0.4Ca2Cu3Oy/Fx for nominal x = 0.0, 1.0, 2.2 and 3.0 were measured by X-ray photoelectron spectroscopy (XPS) in order to identify the F site in the overdoped superconductors. Detailed data analysis indicate that about two thirds of the incorporated F replace O in Cu-O planes of the Tl-1223 structure. Most of the remaining one third of F replaces O in the Ba/Sr-O planes and a small amount of F substitutes for O in the Tl/Pb-O planes of Tl-1223 structure. Cu 2p3/2 binding energy was found to be decreasing with increasing x. This indicates that the valency of Cu in Tl-1223/Fx decreases as x increases. The reduction of charge carriers in the overdoped high temperature superconductors is discussed in terms of anion substitution.

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DO - 10.1016/S0368-2048(00)00174-2

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