Local elastic response of individual grains in lead-free Nb-doped Bi4Ti3O12piezoelectric ceramics

✍ Scribed by Zeng, H. R. ;Yu, H. F. ;Zhang, L. N. ;Chu, R. Q. ;Li, G. R. ;Yin, Q. R.

• Book ID: 105363248
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 360 KB
• Volume: 202
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200510005

✦ Synopsis

Abstract

The local elastic response of individual grains in lead‐free Nb‐doped Bi~4~Ti~3~O~12~ piezoelectric ceramics have been examined by atomic force microscopy in the acoustic mode. Subsurface features with different elasticity down to 60 nm are imaged from the cantilever deflection vibration at a modulation frequency much lower than the cantilever resonance. Local elastic regions parallel and perpendicular to the long axis of the plate‐like grains are found in the Bi~4~Ti~3~O~12~ piezoelectric ceramics, which are most likely a result of the crystal structure arrangement undergone in the grain growth of the Nb‐doped Bi~4~Ti~3~O~12~ piezoelectric ceramics during sintering. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)