Domain size dependence of d33 piezoelectric properties for barium titanate single crystals with engineered domain configurations

✍ Scribed by K. Yako; H. Kakemoto; T. Tsurumi; S. Wada

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 183 KB
• Volume: 120
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2005.02.031

✦ Synopsis

Engineered domain configuration was induced into barium titanate (BaTiO 3 ) single crystals, and the d 33 piezoelectricity was investigated as a function of domain size. First, for the BaTiO 3 single-domain crystals, piezoelectric constant d 33 along [1 1 1] c direction was calculated as 224 pC/N. Prior to the domain engineering, the dependence of domain configuration on the temperature and the electric-field was investigated, and above Curie temperature (T c ), when the electric-field over 6 kV/cm was applied along [1 1 1] c direction, the fine engineered domain configuration appeared. On the basis of the above information, the 33 resonators with different domain sizes were successfully prepared. Their piezoelectric measurement revealed that the d 33 of the 33 resonators with fine engineered domain configurations was higher than that of BaTiO 3 single-domain crystals. Moreover, d 33 increased with decreasing domain sizes. The highest d 33 of 289 pC/N was obtained in the BaTiO 3 crystal with a domain size of 13 m.