Formation of oriented high Tc superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition

J. M. Zhang; Bruce W Wessels; L. M. Tonge; Tobin Jay Marks

doi:10.1063/1.102597

Formation of oriented high T_c superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition

J. M. Zhang^*, Bruce W Wessels, L. M. Tonge, Tobin Jay Marks

^*Corresponding author for this work

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

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Abstract

Highly oriented thin films of the high T_c Bi-Sr-Ca-Cu-O superconductor have been deposited on silver substrates by low-pressure organometallic chemical vapor deposition. The volatile metalorganic complexes Cu(acetylacetonate)₂, Sr(dipivaloylmethanate)₂, Ca(dipivaloylmethanate)₂, and triphenyl bismuth are used as precursors with N₂O as a reactant gas. X-ray diffraction measurements reveal that the films deposited at 625°C contain a mixture of the Bi ₂(Sr,Ca)₂CuO_x and Bi₂(Sr,Ca) ₃Cu₂O_x phases. The post-annealed films are predominantly composed of the Bi₂(Sr,Ca)₃Cu ₂O_x phase with preferential orientation of the crystallite c axes perpendicular to the substrate surface. Magnetic susceptibility measurements indicate the superconducting onset temperature of the annealed films to be at 80 K. The zero-field critical current density, estimated from magnetization measurements, is ∼3.9×10⁵ A/cm² at 5.5 K.

Original language	English (US)
Pages (from-to)	976-978
Number of pages	3
Journal	Applied Physics Letters
Volume	56
Issue number	10
DOIs	https://doi.org/10.1063/1.102597
State	Published - Dec 1 1990

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Physics and Astronomy (miscellaneous)

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@article{6bcc87284118467fa8468ad22e05e026,

title = "Formation of oriented high Tc superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition",

abstract = "Highly oriented thin films of the high Tc Bi-Sr-Ca-Cu-O superconductor have been deposited on silver substrates by low-pressure organometallic chemical vapor deposition. The volatile metalorganic complexes Cu(acetylacetonate)2, Sr(dipivaloylmethanate)2, Ca(dipivaloylmethanate)2, and triphenyl bismuth are used as precursors with N2O as a reactant gas. X-ray diffraction measurements reveal that the films deposited at 625°C contain a mixture of the Bi 2(Sr,Ca)2CuOx and Bi2(Sr,Ca) 3Cu2Ox phases. The post-annealed films are predominantly composed of the Bi2(Sr,Ca)3Cu 2Ox phase with preferential orientation of the crystallite c axes perpendicular to the substrate surface. Magnetic susceptibility measurements indicate the superconducting onset temperature of the annealed films to be at 80 K. The zero-field critical current density, estimated from magnetization measurements, is ∼3.9×105 A/cm2 at 5.5 K.",

author = "Zhang, {J. M.} and Wessels, {Bruce W} and Tonge, {L. M.} and Marks, {Tobin Jay}",

year = "1990",

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doi = "10.1063/1.102597",

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T1 - Formation of oriented high Tc superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition

AU - Zhang, J. M.

AU - Wessels, Bruce W

AU - Tonge, L. M.

AU - Marks, Tobin Jay

PY - 1990/12/1

Y1 - 1990/12/1

N2 - Highly oriented thin films of the high Tc Bi-Sr-Ca-Cu-O superconductor have been deposited on silver substrates by low-pressure organometallic chemical vapor deposition. The volatile metalorganic complexes Cu(acetylacetonate)2, Sr(dipivaloylmethanate)2, Ca(dipivaloylmethanate)2, and triphenyl bismuth are used as precursors with N2O as a reactant gas. X-ray diffraction measurements reveal that the films deposited at 625°C contain a mixture of the Bi 2(Sr,Ca)2CuOx and Bi2(Sr,Ca) 3Cu2Ox phases. The post-annealed films are predominantly composed of the Bi2(Sr,Ca)3Cu 2Ox phase with preferential orientation of the crystallite c axes perpendicular to the substrate surface. Magnetic susceptibility measurements indicate the superconducting onset temperature of the annealed films to be at 80 K. The zero-field critical current density, estimated from magnetization measurements, is ∼3.9×105 A/cm2 at 5.5 K.

AB - Highly oriented thin films of the high Tc Bi-Sr-Ca-Cu-O superconductor have been deposited on silver substrates by low-pressure organometallic chemical vapor deposition. The volatile metalorganic complexes Cu(acetylacetonate)2, Sr(dipivaloylmethanate)2, Ca(dipivaloylmethanate)2, and triphenyl bismuth are used as precursors with N2O as a reactant gas. X-ray diffraction measurements reveal that the films deposited at 625°C contain a mixture of the Bi 2(Sr,Ca)2CuOx and Bi2(Sr,Ca) 3Cu2Ox phases. The post-annealed films are predominantly composed of the Bi2(Sr,Ca)3Cu 2Ox phase with preferential orientation of the crystallite c axes perpendicular to the substrate surface. Magnetic susceptibility measurements indicate the superconducting onset temperature of the annealed films to be at 80 K. The zero-field critical current density, estimated from magnetization measurements, is ∼3.9×105 A/cm2 at 5.5 K.

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JF - Applied Physics Letters

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Formation of oriented high T_c superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition

Abstract

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