Size-driven domain reorientation in hydrothermally derived lead titanate nanoparticles

High-resolution transmission electron microscopy studies of hydrothermally derived platelike lead titanate nanoparticles reveal that below a critical size of approximately 70 nm, the single ferroelectric domain polarization axis reorients from perpendicular to parallel to the plate. We suggest that...

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Bibliographic Details
Published inJournal of materials research Vol. 20; no. 3; pp. 558 - 562
Main Authors Ye, Zhiyuan, Slamovich, Elliott B., King, Alexander H.
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.03.2005
Subjects
Ferroelectric
Hydrothermal
Nanoscale
Rapid Communications
Nanoscale
Ferroelectric
Hydrothermal
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Summary:High-resolution transmission electron microscopy studies of hydrothermally derived platelike lead titanate nanoparticles reveal that below a critical size of approximately 70 nm, the single ferroelectric domain polarization axis reorients from perpendicular to parallel to the plate. We suggest that during particle growth, ions in the hydrothermal processing medium compensate for the ferroelectric depolarization energy. When the processing medium is removed by washing and drying, single domain nanoparticles minimize their depolarization energy by c-axis flipping.
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PII:S0884291400084363
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content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2005.0097