Formation and stability regions of the high-temperature fluorite-related phase in the R2O3-Ta2O5 system (R = La, Nd, Sm, Ho, Er, and Yb)

Journal of the American Ceramic Society

Volumn 80, Issue 8, 1997, Pages 1965-1974

  Yokogawa, Yoshiyuki ^a,b,c   Yoshimura, Masahiro ^a,b  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^b AMERICAN CERAMIC SOCIETY   (United States)

^c NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY AIST   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ANNEALING; CRYSTAL DEFECTS; CRYSTAL LATTICES; EUTECTICS; FLUORSPAR; HIGH TEMPERATURE EFFECTS; ORDER DISORDER TRANSITIONS; PHASE EQUILIBRIA;

DEFECT FLUORITE PHASE; SOLID STATE REACTIONS;

RARE EARTH COMPOUNDS;

EID: 0031197302     PISSN: 00027820     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1151-2916.1997.tb03079.x     Document Type: Article

References (25)

1. 5 System," Inorg. Mater., 3 [7] 1137-41 (1967).
2. 5," Inorg. Mater., 4 [7] 981-84 (1968).
3. 3 System," Russ. J. Inorg. Chem., 15 [3] 440-41 (1970).
4. E. N. Isupova, E. P. Savchenko, T. I. Panova, and E. K. Keler, "Study of the Interaction of Terbium Oxide with Niobium Pentoxide and Tantalum Pentoxide," Izv. Akad. Nauk SSSR, Neorg. Mater., 16 [3] 555-58 (1980).
5. E. N. Isupova, E. P. Savchenko, and E. K. Keler, "Reaction of Tantalum Pentoxide with Erbium Oxide," Inorg. Mater., 11 [8] 1201-204 (1975).
6. 5," Mater. Res. Bull., 12 [1] 367-74 (1977).
7. R. S. Roth and J. I. Waring, "Effect of Oxide Additions on the Polymorphism of Tantalum Pentoxide. III, 'Stabilization of the Low Temperature Structure Type'," J. Res. Natl. Bur. Stand., 74A [4] 485-93 (1970).
8. 3 System," Russ. J. Inorg. Chem., 14 [5] 742-43 (1969).
9. 5 and Synthesis of Single Crystals of a Series of Niobates," Inorg. Mater., 8 [10] 1649-50 (1972).
10. 3 System," Russ. J. Inorg. Chem., 24 [4] 578-82 (1979).
11. H. P. Rooksby and E. A. D. White, "Rare-Earth Niobates and Tantalates of Defect Fluorite- and Weberite-Type Structure," J. Am. Ceram. Soc., 47 [2] 94-96 (1964).
12. 7, Ln = Rare Earth, Y, or Sc, M = Nb, Sb, or Ta. I. Crystal Chemistry," J. Solid State Chem., 27 [1] 105-14 (1979).
13. 7," Russ. J. Inorg. Chem., 27 [7] 931-33 (1982).
14. 7, R = Rare Earth)," Nippon Kagaku Kaishi, 12, 1721-27 (1986).
15. 5, R = Rare Earth)," Mater. Res. Bull., 22 [11] 1449-56 (1987).
16. 7," Yogyo Kyokaishi, 93 [9] 593 (1985).
17. 5," J. Am. Ceram. Soc., 74 [9] 2073-76 (1991).
18. 5," J. Am. Ceram. Soc., 74 [9] 2077-81 (1991).
19. M. Yoshimura, M. Kaneko, and S. Sōmiya, "Crystalization of Mullite-Zirconia Amorphous Materials Prepared by Rapid-Quenching," Yogyo Kyokaishi, 95 [2] 202-208 (1987).
20. 2," High Temp.-High Pressures, 18 [4] 371-78 (1986).
21. T. Yamada, M. Yoshimura, and S. Sōmiya, "A Reinvestigation of the Solidification Point of CaO by Digital Pyrometry," J. Am. Ceram. Soc., 69 [10] C-243-C-245 (1986).
22. International Tables for X-ray Crystallography, Vol. I, Symmetry Groups (2nd ed.). Edited by N. F. M. Henry and K. Londsdale. Kynoch Press, Birmingham, U.K., 1965.
23. 7 (R = Rare Earth)," Solid State Ionics, 28-30, 1250-53 (1989).
24. 7 (R = Ho, Y, Yb)," Rep. Res. Lab. Eng. Mater., Tokyo Inst. Technol., 17, 11-19 (1992).
25. 7," J. Solid State Chem., 114 [1] 79-87 (1995).