Direct observation of ferroelectricity in Quasi-zero-dimensional barium titanate nanoparticles

Sugata Ray, Yury V. Kolen'ko, Desheng Fu, Ruwan Gallage, Naonori Sakamoto, Tomoaki Watanabe, Masahiro Yoshimura, Mitsuru Itoh

研究成果: Article

24 引文 斯高帕斯(Scopus)

摘要

Piezoresponse force microscopic results from barium titanate (BaTiO 3) nanoparticles of two different sizes were investigated, which directly demonstrated the existence of ferroelectricity in BaTiO3. Highly crystalline BaTiO3 nanoparticles were synthesized by a solvothermal drying process. The mixture of Ba(OH)2, 2-methoxyethanol and distilled water was placed in a polytetrafluoroethylene (PTFE) vessel, capped with a PTFE cover and placed inside a stainless steel bomb. A lock-in technique was used to measure the amplitude of mechanical vibration, which was used to evaluate the effective piezoelectric coefficient, and the phase which determined the direction of the polarization. The results of SEM analysis showed that the nanoparticles were deposited in the form of agglomerates, and formed several islands with average dimensions of a few micrometers on the substrate.

原文English
頁(從 - 到)1427-1431
頁數5
期刊Small
2
發行號12
DOIs
出版狀態Published - 2006 十二月 1

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Engineering (miscellaneous)

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    Ray, S., Kolen'ko, Y. V., Fu, D., Gallage, R., Sakamoto, N., Watanabe, T., Yoshimura, M., & Itoh, M. (2006). Direct observation of ferroelectricity in Quasi-zero-dimensional barium titanate nanoparticles. Small, 2(12), 1427-1431. https://doi.org/10.1002/smll.200600297