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

J. M. Zhang; B. W. Wessels; L. M. Tonge; T. J. 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^*, B. W. Wessels, L. M. Tonge, T. J. 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 - 1990

ASJC Scopus subject areas

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, {B. W.} and Tonge, {L. M.} and Marks, {T. J.}",

year = "1990",

doi = "10.1063/1.102597",

language = "English (US)",

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pages = "976--978",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

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, B. W.

AU - Tonge, L. M.

AU - Marks, T. J.

PY - 1990

Y1 - 1990

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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U2 - 10.1063/1.102597

DO - 10.1063/1.102597

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

ER -

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

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