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河北工业大学
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Quantitative analysis of domain textures in ferroelectric ceramics from single high-energy synchrotron X-ray diffraction images.

Title: Quantitative analysis of domain textures in ferroelectric ceramics from single high-energy synchrotron X-ray diffraction images.
Authors: Zhiyang Wang1,2 zhiyang.wang@synchrotron.org.au
Daniels, John E.1
Source: Journal of Applied Physics. 2017, Vol. 121 Issue 16, p1-6. 6p. 1 Diagram, 2 Charts, 2 Graphs.
Document Type: Article
Subject Terms: FERROELECTRIC ceramics
X-ray diffraction
RIETVELD method
POLYCRYSTALS
PARTICLE accelerators
NAICS/Industry Codes: 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing
Abstract: In this study, the possibility of determining the orientation distribution function (ODF) and quantifying the domain textures of polycrystalline ferroelectrics based on single high-energy X-ray diffraction images using a Rietveld refinement method is assessed. A spherical harmonics texture model is incorporated in the approach to determine the ODFs for phase constituents in poled lead-free ferroelectric ceramics (1 - x)(Bi0.5Na0.5)TiO3 - xBaTiO3 with x=0.0625 and 0.075 from both single high-energy synchrotron diffraction images and full rotation diffraction data collected with the samples rotated perpendicular to the poling axis. A quantitative comparison is made between the complete pole figures and pole density profiles obtained from the ODFs extracted from the different diffraction data. The results show that a good approximation to the domain textures of fiber-type in poled ceramics as determined from the full rotation data can be obtained from single diffraction images, with the dominant pole densities within a maximum difference of ∼0.15 multiples of a random distribution. It thus demonstrates that single high-energy X-ray diffraction images are suitable for the quantification of domain texture in ferroelectric ceramics. The analysis validates the applicability of high-energy synchrotron X-day diffraction to observe the texture evolution in situ in ferroelectric ceramics under fast or continuous loading conditions. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1School of Materials Science and Engineering, UNSW Australia, Sydney, New South Wales 2052, Australia ; 2Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
ISSN: 0021-8979
PageCount: 1-7
volume: 121
issue: 16
issn: 00218979
pubdate: 2017