Fracture and domain switching by indentation in barium titanate single crystals

M. J. Busche, K. J. Hsia

Research output: Contribution to journalArticlepeer-review


Indentation technique is used to study cleavage fracture in single crystalline barium titanate. Interesting crack patterns, which differ drastically from the Vickers indentation fracture patterns in polycrystalline ceramics, reveal that cleavage fracture takes place on {113} planes. However, cleavage fracture occurs only on the {113} planes nearly perpendicular to the poling direction, but not on {113} planes roughly parallel to the poling direction. Such fracture anisotropy is explained by the mechanism of 90° domain switch induced toughening. Extensive domain switch is observed around the arrested crack tips. The switch is caused by the compressive radial stress field surrounding the indentation.

Original languageEnglish (US)
Pages (from-to)207-212
Number of pages6
JournalScripta Materialia
Issue number2
StatePublished - Feb 2 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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