Metal-organic chemical vapor deposition-derived lead- and bismuth-doped high-Tc superconducting TlBaCaCuO films

D. A. Neumayer; D. L. Schulz; D. S. Richeson; T. J. Marks; D. C. DeGroot; J. L. Schindler; C. R. Kannewurf

doi:10.1016/0040-6090(92)90866-A

Metal-organic chemical vapor deposition-derived lead- and bismuth-doped high-T_c superconducting TlBaCaCuO films

D. A. Neumayer^*, D. L. Schulz, D. S. Richeson, T. J. Marks, D. C. DeGroot, J. L. Schindler, C. R. Kannewurf

^*Corresponding author for this work

Chemistry

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

13 Scopus citations

Abstract

Superconducting Pb- and Bi-doped TlBaCaCuO films can be prepared on a variety of substrates by a two-step process, based on metal-organic chemical vapor deposition (MOCVD). MBaCaCuO films (M Pb or Bi) are first prepared by MOCVD using precursors exhibiting improved thermal stability and volatility over previously used complexes. These characteristics allow better control over the stoichiometry of the deposited films. In the second step, thallium is incorporated into these films by a vapor diffusion process using mixtures of Tl₂O₃, BaO, CaO and CuO of specific composition as the source of volatile thallium oxides. The resultant films consist predominantly of single-phase TlMBaCaCuO exhibiting preferential orientation of the CuO planes parallel to the substrate surface. The superconducting properties of these films have been examined by resistivity and magnetization measurements.

Original language	English (US)
Pages (from-to)	41-44
Number of pages	4
Journal	Thin Solid Films
Volume	216
Issue number	1
DOIs	https://doi.org/10.1016/0040-6090(92)90866-A
State	Published - Aug 28 1992

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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title = "Metal-organic chemical vapor deposition-derived lead- and bismuth-doped high-Tc superconducting TlBaCaCuO films",

abstract = "Superconducting Pb- and Bi-doped TlBaCaCuO films can be prepared on a variety of substrates by a two-step process, based on metal-organic chemical vapor deposition (MOCVD). MBaCaCuO films (M Pb or Bi) are first prepared by MOCVD using precursors exhibiting improved thermal stability and volatility over previously used complexes. These characteristics allow better control over the stoichiometry of the deposited films. In the second step, thallium is incorporated into these films by a vapor diffusion process using mixtures of Tl2O3, BaO, CaO and CuO of specific composition as the source of volatile thallium oxides. The resultant films consist predominantly of single-phase TlMBaCaCuO exhibiting preferential orientation of the CuO planes parallel to the substrate surface. The superconducting properties of these films have been examined by resistivity and magnetization measurements.",

author = "Neumayer, {D. A.} and Schulz, {D. L.} and Richeson, {D. S.} and Marks, {T. J.} and DeGroot, {D. C.} and Schindler, {J. L.} and Kannewurf, {C. R.}",

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T1 - Metal-organic chemical vapor deposition-derived lead- and bismuth-doped high-Tc superconducting TlBaCaCuO films

AU - Neumayer, D. A.

AU - Schulz, D. L.

AU - Richeson, D. S.

AU - Marks, T. J.

AU - DeGroot, D. C.

AU - Schindler, J. L.

AU - Kannewurf, C. R.

PY - 1992/8/28

Y1 - 1992/8/28

N2 - Superconducting Pb- and Bi-doped TlBaCaCuO films can be prepared on a variety of substrates by a two-step process, based on metal-organic chemical vapor deposition (MOCVD). MBaCaCuO films (M Pb or Bi) are first prepared by MOCVD using precursors exhibiting improved thermal stability and volatility over previously used complexes. These characteristics allow better control over the stoichiometry of the deposited films. In the second step, thallium is incorporated into these films by a vapor diffusion process using mixtures of Tl2O3, BaO, CaO and CuO of specific composition as the source of volatile thallium oxides. The resultant films consist predominantly of single-phase TlMBaCaCuO exhibiting preferential orientation of the CuO planes parallel to the substrate surface. The superconducting properties of these films have been examined by resistivity and magnetization measurements.

AB - Superconducting Pb- and Bi-doped TlBaCaCuO films can be prepared on a variety of substrates by a two-step process, based on metal-organic chemical vapor deposition (MOCVD). MBaCaCuO films (M Pb or Bi) are first prepared by MOCVD using precursors exhibiting improved thermal stability and volatility over previously used complexes. These characteristics allow better control over the stoichiometry of the deposited films. In the second step, thallium is incorporated into these films by a vapor diffusion process using mixtures of Tl2O3, BaO, CaO and CuO of specific composition as the source of volatile thallium oxides. The resultant films consist predominantly of single-phase TlMBaCaCuO exhibiting preferential orientation of the CuO planes parallel to the substrate surface. The superconducting properties of these films have been examined by resistivity and magnetization measurements.

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Metal-organic chemical vapor deposition-derived lead- and bismuth-doped high-T_c superconducting TlBaCaCuO films

Abstract

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