Ferroelectric effects in individual BaTiO sub(3) nanocrystals investigated by electron holography

Ferroelectric effects in individual BaTiO sub(3) nanocrystals investigated by electron holography

BaTiO sub(3) (BTO) nanocubes of about 50 nm in size were investigated by means of off-axis electron holography combined with in situ heating above and below the Curie temperature. It is shown that reconstructed electron phase maps of the BTO nanocubes are associated with the ferroelectric polarizati...

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Veröffentlicht in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-04, Vol.85 (13)
Hauptverfasser: Szwarcman, Daniel, Lubk, Axel, Linck, Martin, Vogel, Karin, Lereah, Yossi, Lichte, Hannes, Markovich, Gil
Format: Artikel
Sprache:eng
Schlagworte:
Barium titanates
Condensed matter
Curie temperature
Ferroelectric materials
Ferroelectricity
Holography
Nanostructure
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Zusammenfassung:BaTiO sub(3) (BTO) nanocubes of about 50 nm in size were investigated by means of off-axis electron holography combined with in situ heating above and below the Curie temperature. It is shown that reconstructed electron phase maps of the BTO nanocubes are associated with the ferroelectric polarization pattern through a mechanism that could either be direct imaging of the internal potential or lattice variations that are common in ferroelectric domain patterns.
ISSN:1098-0121
1550-235X