Numerical and experimental studies on crack formation in LiNbO3 single crystal

T. Tsukada, K. Kakinoki, M. Hozawa, N. Imaishi, K. Shimamura, T. Fukuda

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

A global analysis of heat transfer was carried out in an inductively heated Czochralski (CZ) furnace which was actually used to grow LiNbO3 single crystals, and then the temperature profiles obtained were used to calculate the three-dimensional thermal stress field in the crystal. By comparing the numerical results with the experimental ones, it was found that controlling the thermal environment in the CZ furnace so that the thermal stresses at the crystal surface might not exceed a certain value is important to realize the cracking free growth operation. In this study, this was accomplished through some modifications in the furnace design such as insertion of an after-heater into the furnace. These findings were verified by additional numerical simulations and crystal growth experiments for some growth conditions.

Original languageEnglish
Pages (from-to)543-550
Number of pages8
JournalJournal of Crystal Growth
Volume180
Issue number3-4
DOIs
Publication statusPublished - 1997 Oct

Keywords

  • Crack formation
  • Czochralski method
  • Global analysis
  • Heat transfer
  • LiNbO
  • Thermal stress field

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Numerical and experimental studies on crack formation in LiNbO<sub>3</sub> single crystal'. Together they form a unique fingerprint.

Cite this