Preparation of 200 nm BaTiO3 Particles with their Tetragonality 1.010 Via a Solid-State Reaction Preceded by Agglomeration-Free Mechanical Activation
Well‐dispersed barium titanate (BaTiO3; BT) with an average primary particle size <200 nm and lattice tetragonality 1.010, being very close to that of a BT single crystal, was obtained via a solid‐state route with the aid of preliminary dry mechanical processing. The latter treatment not only act...
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Published in | Journal of the American Ceramic Society Vol. 90; no. 3; pp. 809 - 814 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Malden, USA
Blackwell Publishing Inc
01.03.2007
Blackwell Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Well‐dispersed barium titanate (BaTiO3; BT) with an average primary particle size <200 nm and lattice tetragonality 1.010, being very close to that of a BT single crystal, was obtained via a solid‐state route with the aid of preliminary dry mechanical processing. The latter treatment not only activates the starting mixture but also decreases the particle sizes of individual ingredients and increases the homogeneity. All these favor to suppress grain growth of the product BT due to increasing nucleation site density, easing the nucleation at the given nucleation site, and decreasing the diffusion paths. These were confirmed by (i) microscopy and particle size analysis to observe downsizing of individual particulates without causing agglomeration; (ii) electron probe microanalysis to reveal increase in the homogeneity in a few micrometer regime; and (iii) X‐ray photoelectron spectroscopy to reveal mechanochemical effects across the solid–solid boundary of dissimilar particles. |
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Bibliography: | ArticleID:JACE01498 istex:BE140F66E8144AC52A45BBB2F0C3B116E5041D2A ark:/67375/WNG-KZLZ1FCW-W W. Suchanek—contributing editor ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0002-7820 1551-2916 |
DOI: | 10.1111/j.1551-2916.2007.01498.x |