Journal of Materials Science

, Volume 41, Issue 19, pp 6313–6321 | Cite as

Analysis of cracking of lithium tantalate (LiTaO3) single crystals due to thermal stress

  • N. MiyazakiEmail author
  • N. Koizumi


Quantitative estimation of failure of a LiTaO3 single crystal due to thermal stress was investigated. Cylindrical test slabs were heated in a silicone oil bath, then subjected to large thermal stress by pouring silicone oil with room temperature. Cracking occurred during cooling. A transient heat conduction analysis was performed to obtain a temperature distribution in a test slab at the time of cracking, using the surface temperatures measured in the test. Then thermal stress was calculated using a temperature profile of the test slab obtained from the heat conduction analysis. It is found from the results of thermal stress analyses and the observation of the cracking in the test slabs that the cracking induced by thermal stress occurs mainly in the cleavage planes due to the stress component normal to the plane. As for a size effect of failure stress, large-sized cylindrical test slabs show lower failure stress than small-sized ones. Four-point bending tests were also performed to examine the relationship between the critical stress for cracking induced by thermal stress and the four-point bending strength. A useful relation was derived for predicting the critical stress for cracking induced by thermal stress from the four-point bending strength.


Thermal Stress Cleavage Plane Failure Stress LiTaO3 Bulk Single Crystal 



The authors would like to express their gratitude to Koike Co. Ltd. for supplying lithium tantalate test specimens. This study was financially supported by a Grant-in-Aid for Scientific Research from the Japan Society for Promotion of Science.


  1. 1.
    Brandle CD, Miller DC (1974) J Cryst Growth 24/25:432CrossRefGoogle Scholar
  2. 2.
    Brice JC (1977) J Cryst Growth 42:427CrossRefGoogle Scholar
  3. 3.
    Lee SH, Kim YJ, Cho SH, Yoon EP (1992) J Cryst Growth 125:175CrossRefGoogle Scholar
  4. 4.
    Galazka Z (1999) Cryst Res Technol 34:635CrossRefGoogle Scholar
  5. 5.
    Miyazaki N, Uchida H, Tsukada T, Munakata T (1996) J Cryst Growth 162:83CrossRefGoogle Scholar
  6. 6.
    Kobayashi M, Tsukada T, Hozawa M (2002) J Cryst Growth 241:241CrossRefGoogle Scholar
  7. 7.
    Miyazaki N, Hattori A, Uchida H (1997) J Mater Sci: Mater Electron 8:133Google Scholar
  8. 8.
    Miyazaki N, Tamura T, Yamamoto K (2000) Comput Model Eng Sci 1:99Google Scholar
  9. 9.
    Smith RT, Welsh FS (1971) J Appl Phys 42:2219CrossRefGoogle Scholar
  10. 10.
    Lin TH, Edwards D, Reedy RE, Das K, Mcginnis W, Lee SH (1988) Ferroelectrics 77:153CrossRefGoogle Scholar
  11. 11.
    Miyazaki N (2002) J Cryst Growth 236:455CrossRefGoogle Scholar
  12. 12.
    Nye JF (1957) Physical properties of crystals. Clarendon Press, Oxford, p 131Google Scholar
  13. 13.
    Choy MM, Cook WR, Hearmon RFS, Jaffe H, Jerphagnon J, Kurtz SK, Liu ST, Nelson DE (1979) LANDOLT-BORNSTEIN numerical data and functional relationships in science and technology, New Series, vol 11. Springer-Verlag, p 53Google Scholar
  14. 14.
    Bansal GK, Duckworth WH, Niesz DE (1976) J Am Ceram Soc 59:477Google Scholar
  15. 15.
    Tsuge H (1987) J Soc Mater Sci Jpn 36:35CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Mechanical Engineering and ScienceKyoto UniversityKyotoJapan
  2. 2.Department of Material Process EngineeringKyushu UniversityHigashi-kuJapan

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