Physical processing effects on polycrystalline YBa2Cu3Ox

W. K. Ford; J. Anderson; G. V. Rubenacker; John E. Drumheller; C. T. Chen; M. Hong; J. Kwo; S. H. Liou

doi:10.1557/JMR.1989.0016

Physical processing effects on polycrystalline YBa₂Cu₃O_x

W. K. Ford, J. Anderson, G. V. Rubenacker, John E. Drumheller, C. T. Chen, M. Hong, J. Kwo, S. H. Liou

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

10 Scopus citations

Abstract

The effect of heating YBa₂Cu₃O_xin vacuum to 600 °C has been studied using photoelectron spectroscopy and diamagnetic susceptibility measurements. Evidence of two chemically distinct copper and barium species is found in single phase samples at room temperature cleaned by gentle heating at 450 °C. Such annealing also increases the volume diamagnetic susceptibility of the samples which suggests that the preferred stoichiometry of growth does not lead to an optimum superconducting phase. Samples cleaned by vacuum scraping or ion bombardment reveal more amorphous XPS structure and are less indicative of bulk properties.

Original language	English (US)
Pages (from-to)	16-22
Number of pages	7
Journal	Journal of Materials Research
Volume	4
Issue number	1
DOIs	https://doi.org/10.1557/JMR.1989.0016
State	Published - Feb 1989
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/JMR.1989.0016

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title = "Physical processing effects on polycrystalline YBa2Cu3Ox ",

abstract = "The effect of heating YBa2Cu3Oxin vacuum to 600 °C has been studied using photoelectron spectroscopy and diamagnetic susceptibility measurements. Evidence of two chemically distinct copper and barium species is found in single phase samples at room temperature cleaned by gentle heating at 450 °C. Such annealing also increases the volume diamagnetic susceptibility of the samples which suggests that the preferred stoichiometry of growth does not lead to an optimum superconducting phase. Samples cleaned by vacuum scraping or ion bombardment reveal more amorphous XPS structure and are less indicative of bulk properties.",

author = "Ford, {W. K.} and J. Anderson and Rubenacker, {G. V.} and Drumheller, {John E.} and Chen, {C. T.} and M. Hong and J. Kwo and Liou, {S. H.}",

note = "Funding Information: This work was sponsored under DoE Grant DE-FG22-85PC80518, a Northwest Area Foundation Grant of Research Corporation, a grant from the NSF EPSCOR/ MONTS program, NSF Grants No. DMR-8309460, No. DMR-8705879, and No. DMR-8702933.",

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doi = "10.1557/JMR.1989.0016",

language = "English (US)",

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AU - Ford, W. K.

AU - Anderson, J.

AU - Rubenacker, G. V.

AU - Drumheller, John E.

AU - Chen, C. T.

AU - Hong, M.

AU - Kwo, J.

AU - Liou, S. H.

N1 - Funding Information: This work was sponsored under DoE Grant DE-FG22-85PC80518, a Northwest Area Foundation Grant of Research Corporation, a grant from the NSF EPSCOR/ MONTS program, NSF Grants No. DMR-8309460, No. DMR-8705879, and No. DMR-8702933.

PY - 1989/2

Y1 - 1989/2

N2 - The effect of heating YBa2Cu3Oxin vacuum to 600 °C has been studied using photoelectron spectroscopy and diamagnetic susceptibility measurements. Evidence of two chemically distinct copper and barium species is found in single phase samples at room temperature cleaned by gentle heating at 450 °C. Such annealing also increases the volume diamagnetic susceptibility of the samples which suggests that the preferred stoichiometry of growth does not lead to an optimum superconducting phase. Samples cleaned by vacuum scraping or ion bombardment reveal more amorphous XPS structure and are less indicative of bulk properties.

AB - The effect of heating YBa2Cu3Oxin vacuum to 600 °C has been studied using photoelectron spectroscopy and diamagnetic susceptibility measurements. Evidence of two chemically distinct copper and barium species is found in single phase samples at room temperature cleaned by gentle heating at 450 °C. Such annealing also increases the volume diamagnetic susceptibility of the samples which suggests that the preferred stoichiometry of growth does not lead to an optimum superconducting phase. Samples cleaned by vacuum scraping or ion bombardment reveal more amorphous XPS structure and are less indicative of bulk properties.

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Physical processing effects on polycrystalline YBa₂Cu₃O_x

Abstract

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