Ferroelectric behaviour of 30nm BaTiO3 ceramics prepared by high pressure assisted sintering
Xiao Chang-Jiang(肖长江)a), Chi Zhen-Hua(迟振华)a), Li Feng-Ying(李凤英)a), Feng Shao-Min(冯少敏)a), Jin Chang-Qing(靳常青)a)† , Wang Xiao-Hui(王晓慧)b), Deng Xiang-Yun(邓湘云)b), and Li Long-Tu(李龙土)b)
a Institute of Physics, Chinese Academy of Science, Beijing 100080, China; b State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Abstract Dense nanocrystalline BaTiO3 ceramics with a homogeneous grain size of 30 nm was obtained by pressure assisted sintering. The ferroelectric behaviour of the ceramics was characterized by the dielectric peak at around 120℃, the $P$-$E$ hysteresis loop and some ferroelectric domains. These experimental results indicate that the critical grain size for the disappearance of ferroelectricity in nanocrystalline BaTiO3 ceramics fabricated by pressure assisted sintering is below 30 nm. The ferroelectric property decreasing with decreasing grain size can be explained by the lowered tetragonality and the `dilution' effect of grain boundaries.
Received: 13 August 2006
Revised: 31 December 2006
Accepted manuscript online:
(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
Fund: Project supported
by the Ministry of Sciences and Technology of China through 973
project (Grant No 2002B613301).
Cite this article:
Xiao Chang-Jiang(肖长江), Chi Zhen-Hua(迟振华), Li Feng-Ying(李凤英), Feng Shao-Min(冯少敏), Jin Chang-Qing(靳常青), Wang Xiao-Hui(王晓慧), Deng Xiang-Yun(邓湘云), and Li Long-Tu(李龙土) Ferroelectric behaviour of 30nm BaTiO3 ceramics prepared by high pressure assisted sintering 2007 Chinese Physics 16 3125
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
