Hostname: page-component-6766d58669-fx4k7 Total loading time: 0 Render date: 2026-05-16T11:44:19.489Z Has data issue: false hasContentIssue false
  • English
  • Français

Volatile Mixed Metal Y-Ba and Ba-Cu Precursors for Mocvd of HighTc Superconductors: A Way to Improve the Transport of Barium?

Published online by Cambridge University Press:  21 February 2011

Liliane G. Hubert-Pfalzgraf ,
Florence Labrize ,
Herve Guillon  and
Patrick Tobaly
Liliane G. Hubert-Pfalzgraf
Affiliation:
Université de Nice Sophia-Antipolis, 06108 NICE Cedex, France
Florence Labrize
Affiliation:
Université de Nice Sophia-Antipolis, 06108 NICE Cedex, France
Herve Guillon
Affiliation:
Université de Nice Sophia-Antipolis, 06108 NICE Cedex, France
Patrick Tobaly
Affiliation:
Lab. d'Ingénierie des Matériaux, 93430 Villetaneuse, France
Get access

Abstract

The fluoroisopropoxide ligand (HFIP) has allowed the synthesis ofmixed-metal homoleptic Ba2Y and CuBa alkoxides. However, althoughthese species are all volatile, their poor thermal stability precludes theiruse as CVD precursors. Their properties have thus been optimized byintroduction of 2,2,6,6-tetramethylheptane-3,5-dione (thdH) in the metalcoordination sphere. Compounds such as Y2Ba(μ-HFIP)4(thd)4, the first volatileY-Ba species reported so far, as well as BaCu2(HFIP)4(thd)2 and YCu(HFIP)2(thd)3 have been obtained. Theseheterometallic ϐdiketonatoalkoxides have been characterized by a variety oftechniques including X-ray diffraction, mass spectrometry, vapor pressuremeasurements and thermogravimetric analysis. Preliminary data on thermaldecomposition experiments are given.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 279
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1 Zama, H. and Oda, S., Jpn J. Appl. Phys., 29, 1072 (1990); J.M. Buriak, L.K. Cheetham, R.G. Gordon, J.J. Graham and A.R. Barron, Eur. J. Solid Stat Inorg. Chem., 29, 43 (1992)Google Scholar
2 Drake, S.R., Hursthouse, M.B., Abdul Malik, K.M. and Stewart, S.A.S., Inorg. Chem., 32, 4653 (1993)Google Scholar
3 Drake, S.R., Hursthouse, M.B., Malik, K.M.A. and Otway, D.J., J. Chem. Soc. Dalton Trans. 1993. 2883.Google Scholar
4 Hubert-Pfalzgraf, L.G., Labrize, F., Bois, C. and Vaissermann, J., Polyhedron, 13, 0000 (1994)Google Scholar
5 Caulton, K.G. and Hubert-Pfalzgraf, L.G., Chem. Rev. 90, 962 (1990)Google Scholar
6 Hubert-Pfalzgraf, L.G., Appl. Organometal Chem. 6, 627 (1992)Google Scholar
7 Vincent, H., Labrize, F., Hubert-Pfalzgraf, L.G., submittedGoogle Scholar
8 Mehrotra, R.C., Bohra, R. and Gaur, D.P., Metal βdiketonates and Allied derivatives, Academic Press, London (1978)Google Scholar
9 Labrize, , Hubert-Pfalzgraf, L.G., Daran, J.C. and Halut, S., J. Chem. Soc. Chem. Commun. 1993, 1586 Google Scholar
10 Tobaly, P., Rev. Sei. Instrum. 62, 2011, (1991).Google Scholar
11 Tobaly, P. and Lanchec, G., J. Chem. Thermodynamics, 25, 503 (1993)Google Scholar