Journal of Materials Science

, Volume 16, Issue 5, pp 1310–1316 | Cite as

Preferentially orientated precipitation in MnTiO3 single crystals

  • H. Takei
Papers

Abstract

Preferentially orientated precipitation of α-TiO2 (rutile) needles in single crystals of MnTiO3 grown by a floating-zone method under a controlled atmosphere of oxygen fugacity was studied. Optical microscopy and X-ray analysis revealed that the orientation relation between the α-TiO2 precipitates and the MnTiO2 matrix is: {000 1}MnTiO3// {111}α-TiO2 and 〈11¯20〉MnTiO3// 〈110〉α-TiO2. The precipitation phenomenon was explained by introducing a nucleation and growth mechanism which was experimentally supported by heat treating experiments.

Keywords

Oxygen Polymer Precipitation Atmosphere Microscopy 

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References

  1. 1.
    J. R. Rasmussen, G. B. Stringfellow, I. B. Cutler andS. D. Brown,J. Amer. Ceram. Soc. 48 (1965) 146.Google Scholar
  2. 2.
    S. E. Hsu, W. Kobes andM. E. Fine,ibid. 50 (1967) 149.Google Scholar
  3. 3.
    R. J. Bratton,J. Appl. Phys. 42 (1971) 211.Google Scholar
  4. 4.
    E. W. Kruse III, andM. E. Fine,J. Amer. Ceram. Soc. 55 (1972) 32.Google Scholar
  5. 5.
    B. J. Busovne, Jr, D. M. Kotchik andR. E. Tressler,Phil. Mag. 39 (1979) 265.Google Scholar
  6. 6.
    P. Delavignette andS. Amelinckx,Mat. Res. Bull. 5 (1970) 1009.Google Scholar
  7. 7.
    J. T. Gruijters andG. D. Riek,J. Crystal Growth 10 (1971) 207.Google Scholar
  8. 8.
    E. H. L. J. Dekker andG. D. Riek,ibid. 23 (1974) 143.Google Scholar
  9. 9.
    H. R. Harrison, R. Aragon andC. J. Sandberg,Mat. Res. Bull. 15 (1980) 571.Google Scholar
  10. 10.
    H. Takei andK. Kitamura,J. Crystal Growth 44 (1978) 629.Google Scholar
  11. 11.
    H. Takei,ibid. 43 (1978) 463.Google Scholar
  12. 12.
    J. Greive andJ. White,J. Roy. Tech. Coll. (Glasgow) 4 (1940) 661.Google Scholar
  13. 13.
    I. Shindo, N. Kimizuka andS. Kimura,Mat. Res. Bull. 11 (1976) 637.Google Scholar
  14. 14.
    R. W. G. Wyckoff, ‘Crystal Structures’, Vol. 2 (Interscience, New York, 1951) pp. 422.Google Scholar
  15. 15.
    Y. Ishikawa andS. Akimoto,J. Phys. Soc. Japan 13 (1958) 1298.Google Scholar
  16. 16.
    J. J. Stickler, S. Kern, A. Wold andG. S. Heller,Phys. Rev. 164 (1967) 765.Google Scholar
  17. 17.
    W. C. Hahn andA. Muan,Amer. J. Sci. 258 (1960) 66.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1981

Authors and Affiliations

  • H. Takei
    • 1
  1. 1.The Research Institute for Iron, Steel and Other MetalsTohoku UniversitySendaiJapan

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