Paper Title:
Ferroelectric Phase Transition Investigated by Thermal Analysis and Raman Scattering in SrBi2Ta2O9 Nanoparticles
  Abstract

Thermal analysis and Raman spectra were carried out in SrBi2Ta2O9 (SBT) nanoparticles to investigate phase transitions. Two anomalies have been observed in temperature dependence of specific heat for SBT nanoparticles. Under the combination with Raman spectra, it indicates that there exists a new ferroelectric intermediate phase in the phase-transition sequence. So we can conclude that the phase-transition sequence in SBT nanoparticles should be ferroelectric-ferroelectric-paraelectric. Moreover, the size effect was discussed in consideration of inner compressive stress in nanoparticles for this special transition behavior. The calculated results show that the SBT nanoparticles keep the ferroelectricity until the particle size is decreased to 4.2 nm.

  Info
Periodical
Solid State Phenomena (Volumes 121-123)
Edited by
Chunli BAI, Sishen XIE, Xing ZHU
Pages
843-846
DOI
10.4028/www.scientific.net/SSP.121-123.843
Citation
H. Ke, D. C. Jia, W. Wang, Y. Zhou, "Ferroelectric Phase Transition Investigated by Thermal Analysis and Raman Scattering in SrBi2Ta2O9 Nanoparticles", Solid State Phenomena, Vols. 121-123, pp. 843-846, 2007
Online since
March 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hiroaki Takeda, C. Fujioka, Soichiro Okamura, Tadashi Shiosaki
1169
Authors: Wen Zhong Lu, Gui Fen Fan, Xiao Hong Wang, Fei Liang
Abstract:Lead-free (1-x) Bi1/2Na1/2TiO3-xKNbO3 (x=0, 0.01, 0.02, 0.04, 0.05 0.06, 0.10) piezoelectric ceramics were prepared by conventional ceramics...
184
Authors: Li Ren Han, Wei Guo Fu, Xiang Yun Deng, Xiao Fen Guan, Zhong Wen Tan, Cheng Lu, Ren Bo Yang, Yan Jie Zhang
Abstract:(Ba0.7Ca0.3)TiO3 (BCT) powders and ceramics have been prepared by sol-gel technique. Structural evolution of the BCT dry gels are...
1016
Authors: Hui Chen, Tia Min Cheng
Materials Engineering
Abstract:The dielectric and pyroelectric properties of ferroelectric thin films coated with two semiconducting electrodes are studied in the frame...
1600
Authors: Chia Ching Wu, Ying Hsun Lin, Ping Shou Cheng, Chao Chin Chan, Cheng Fu Yang
Chapter 4: Ceramic
Abstract:Perovskite-based (1-x) (Na0.5Bi0.5)TiO3-x NaNbO3 [(1-x) NBT-x NN, x = 0.1, 0.2, 0.3 and 0.4]...
1064