Skip to main content
SpringerLink
Log in

Compound Mg2Ta2O7 and Its Interaction with Nd3TaO7

  • Published:
Refractories and Industrial Ceramics Aims and scope

Abstract

Compound Mg2Ta2O7 crystallizing in the structure of cubic pyrochlore and stable in the temperature range from 1400°C to the melting point has been synthesized. The phase formation in the Mg2Ta2O7 – Nd3TaO7 system in the temperature range from 1300°C to the melting point has been studied. The formation of Mg2Ta2O7-based cubic solid solutions extending to 35 mol.% Nd3TaO7 has been established. A phase of varying composition with a fluorite-like structure stable to 1500 – 1550°C in the concentration range of 43 to 67 mol.% Nd3TaO7has been identified.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

REFERENCES

  1. N. A. Toropov, V. P. Barzakovskii, V. V. Lapin, and N. N. Kurtseva, Diagrams of State of Silicate Systems. Handbook, Vol. 1 [in Russian], Nauka, Leningrad (1969).

    Google Scholar 

  2. R. D. Shannon and C. T. Prewit, “Effective ionic radii in oxides and fluorides, ” Acta Cryst., 25, 925-958 (1969)

    Google Scholar 

  3. E. M. Savitskii, V. P. Gladun, and N. N. Kiseleva, “Hypothetical compounds A2B2O7 with a structure of pyrochlore, ” Dokl. Akad. Nauk SSSR, 27(7), 1648-1651 (1977).

    Google Scholar 

  4. A. P. Pivovarova, V. I. Strakhov, and Yu. N. Smirnov, “Phase equilibria in the Ca2Ta2O7-Nd3TaO7 system, ” Zh. Neorg. Khim., 44(5), 819-822 (1999).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. St. Petersburg State Technological Institute (Technical University), St. Petersburg, Russia

    A. P. Pivovarova

Authors
  1. A. P. Pivovarova
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Pivovarova, A.P. Compound Mg2Ta2O7 and Its Interaction with Nd3TaO7. Refractories and Industrial Ceramics 43, 172–175 (2002). https://doi.org/10.1023/A:1020567016907

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1020567016907

Keywords

Search

Navigation