Low Temperature Phase Formation of Tl-Based Superconducting Thin Films in Reduced Oxygen Atmosphere

C. Y. Wu; F. Foong; S. H. Liou; J. C. Ho

doi:10.1109/77.233335

Low Temperature Phase Formation of Tl-Based Superconducting Thin Films in Reduced Oxygen Atmosphere

C. Y. Wu, F. Foong, S. H. Liou, J. C. Ho

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

6 Scopus citations

Abstract

11-Ba-Ca-Cu-O superconducting thin films were prepared by magnetron sputtering with post-annealing in a reduced oxygen atmosphere. Single phase Tl2Ba2Ca2Cu3Ox can form on the MgO substrate at 800°C under P(02) =0.1 atm. However the phase formation temperature can be affected by the starting composition of the film. T11Ba2Ca2Cu3Ox phase can be formed by simply lowering the Tl2O pressure. The thermal stability of Tl2Ba2Ca2Cu3Ox phase was studied by resistivity measurements at high temperatures.

Original language	English (US)
Pages (from-to)	1205-1207
Number of pages	3
Journal	IEEE Transactions on Applied Superconductivity
Volume	3
Issue number	1
DOIs	https://doi.org/10.1109/77.233335
State	Published - Mar 1993

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Low Temperature Phase Formation of Tl-Based Superconducting Thin Films in Reduced Oxygen Atmosphere",

abstract = "11-Ba-Ca-Cu-O superconducting thin films were prepared by magnetron sputtering with post-annealing in a reduced oxygen atmosphere. Single phase Tl2Ba2Ca2Cu3Ox can form on the MgO substrate at 800°C under P(02) =0.1 atm. However the phase formation temperature can be affected by the starting composition of the film. T11Ba2Ca2Cu3Ox phase can be formed by simply lowering the Tl2O pressure. The thermal stability of Tl2Ba2Ca2Cu3Ox phase was studied by resistivity measurements at high temperatures.",

author = "Wu, {C. Y.} and F. Foong and Liou, {S. H.} and Ho, {J. C.}",

note = "Funding Information: This work was supported by the NASA Lewis Grant NAG 3-886. * Present address: National Institute for Aviation Research, Cryogenics Lab, Wichita State University, Wichita, KS 67208.",

year = "1993",

month = mar,

doi = "10.1109/77.233335",

language = "English (US)",

volume = "3",

pages = "1205--1207",

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T1 - Low Temperature Phase Formation of Tl-Based Superconducting Thin Films in Reduced Oxygen Atmosphere

AU - Wu, C. Y.

AU - Foong, F.

AU - Liou, S. H.

AU - Ho, J. C.

N1 - Funding Information: This work was supported by the NASA Lewis Grant NAG 3-886. * Present address: National Institute for Aviation Research, Cryogenics Lab, Wichita State University, Wichita, KS 67208.

PY - 1993/3

Y1 - 1993/3

N2 - 11-Ba-Ca-Cu-O superconducting thin films were prepared by magnetron sputtering with post-annealing in a reduced oxygen atmosphere. Single phase Tl2Ba2Ca2Cu3Ox can form on the MgO substrate at 800°C under P(02) =0.1 atm. However the phase formation temperature can be affected by the starting composition of the film. T11Ba2Ca2Cu3Ox phase can be formed by simply lowering the Tl2O pressure. The thermal stability of Tl2Ba2Ca2Cu3Ox phase was studied by resistivity measurements at high temperatures.

AB - 11-Ba-Ca-Cu-O superconducting thin films were prepared by magnetron sputtering with post-annealing in a reduced oxygen atmosphere. Single phase Tl2Ba2Ca2Cu3Ox can form on the MgO substrate at 800°C under P(02) =0.1 atm. However the phase formation temperature can be affected by the starting composition of the film. T11Ba2Ca2Cu3Ox phase can be formed by simply lowering the Tl2O pressure. The thermal stability of Tl2Ba2Ca2Cu3Ox phase was studied by resistivity measurements at high temperatures.

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Low Temperature Phase Formation of Tl-Based Superconducting Thin Films in Reduced Oxygen Atmosphere

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