Notification:
We are currently experiencing intermittent issues impacting performance. We apologize for the inconvenience.
By Topic

A transmission electron microscopy study of submicrometer BiFeO3 particle prepared by an improved solid state reaction

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Mei-ju Si ; Dept. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China ; Hou, Yu-Dong ; Hai-Yan Ge ; Zhu, Man-Kang
more authors

In this work, submicrometer bismuth ferrite (BiFeO3) particles have been prepared at the temperature of 750 °C by the improved solid state reaction, in which the quick sintering step is crucial in obtaining pure perovskite phase. The X-ray diffractometer (XRD) analysis indicates that the obtained BiFeO3 particles are rhombohedral structure, and the refined cell parameters are a=5.622Å and α=59.355° (R=8.35%), similar to the reported data (JCPDS Card 86-1518, a=5.632Å and α=59.356°). The microstructure has been observed using transmission electron microscope (TEM), and the image shows that BiFeO3 powders have the quasi spherical morphology with the mean particle size between 100-150nm. Further, the distinct lattice fringes reveal the nature of the single-crystalline BiFeO3 nanostructure, and the interplanar spacing is about 0.87nm, corresponding well to the double spacing of (012). Moreover, it is interesting to note that there existed the dislocation in BiFeO3 particle, which is believed to arise from the collision of different grains in growing process. The sintered compact bodies from BiFeO3 fine particles show the slim ferroelectric loops, and dielectric properties are frequency independent. The measured dielectric constant and loss tangent are 19.5 and 0.0025 at room temperature, showing the potential application in multiferroic devices.

Published in:

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2011 Symposium on

Date of Conference:

9-11 Dec. 2011