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Ferroelectric ceramics with enhanced remnant polarization by ordered coalescence of nano-crystals
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- Shen, Zhijian (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
- Yan, Haixue (author)
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- Grüner, Daniel (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Nan, Ce-Wen (author)
- Hoeche, Thomas (author)
- Reece, Michael J. (author)
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- (creator_code:org_t)
- Royal Society of Chemistry (RSC), 2012
- 2012
- English.
- In: Journal of Materials Chemistry. - : Royal Society of Chemistry (RSC). - 0959-9428 .- 1364-5501. ; 22:44, s. 23547-23552
- Journal article (peer-reviewed)
Abstract
Subject headings
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- An exceptional high ferroelectric remnant polarization (P-r) was observed in BaTiO3 ceramics owing to the formation of micron-sized grains possessing nano-scale mosaicity. Such a structural hierarchy was developed via a novel crystal-growth mechanism, namely ordered coalescence of nano-crystals achieved by synergetic atomic epitaxial growth and self-assembly of nano-crystals. The accommodating lattice defects in sub-grain boundaries due to the imperfect assembly of nano-crystals significantly contribute to the P-r enhancement by stimulating the dynamics of ferroelectric domain formation and switching. This finding defines a new approach to nanopowder sintering leading to enhanced properties sensitive to lattice defects.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Barium Titanate
- Films
- Dense
Publication and Content Type
- ref (subject category)
- art (subject category)
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