論文

査読有り
2011年9月1日

Changes in ferroelectric domain structure with electric fatigue in Li 0.06(Na0.5K0.5)0.94NbO3 ceramics

Japanese Journal of Applied Physics
  • Sadahiro Tsurekawa
  • ,
  • Hiroki Hatao
  • ,
  • Hirofumi Takahashi
  • ,
  • Yasuhiro Morizono

50
DOI
10.1143/JJAP.50.09NC02

Piezoelectric materials should have stable performance during electric cycling in service. Because piezoelectricity-related properties depend on the ferroelectric domain structure, it is essential to investigate the fatigue characteristics of domain structures under electric loading. Piezoresponse force microscopy (PFM) was used to observe changes in ferroelectric domain structure with cyclic electric loading in MnO2-doped Li0.06(Na 0.5K0.5)0.94NbO3 (LNKN) ceramics. The PFM observations revealed that polarization loss occurred owing to electric fatigue, and that domain width and length fraction of 180° domain walls increased with increasing number of cycles. The decreases in the piezoelectric constant d33 and the electromechanical coupling coefficient k p observed owing to electric fatigue are compared with fatigue of the domain structure. ? 2011 The Japan Society of Applied Physics.

リンク情報
DOI
https://doi.org/10.1143/JJAP.50.09NC02
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80053056605&origin=inward
ID情報
  • DOI : 10.1143/JJAP.50.09NC02
  • ISSN : 0021-4922

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