Dipole-Dipole Interaction Model for Oriented Aggregation of BaTiO3 Nanocrystals. Issue 1663 (13th March 2014)

• Record Type: Journal Article
• Authors: Yasui, Kyuichi; Kato, Kazumi
• Is Part Of: MRS proceedings. Issue 1663(2014)
• Publication Date: 2014-03-13
• Subjects: self-assembly, -- simulation, -- ferroelectric; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/opl.2014.310
• Languages: English
• ISSNs: 0272-9172

Abstract

ABSTRACT: In order to study the oriented aggregation of BaTiO3 nanocrystals in the ultrasound-assisted synthesis in an aqueous solution [F.Dang et al., Jpn.J.Appl.Phys. 48, 09KC02 (2009)], the electric dipole-dipole interaction model has been studied by numerical simulations. The results of the numerical simulations are consistent with the experimental ones if the electric dipole moment of a primary particle (a nanocrystal) of 5 nm in diameter is about 10 D =3.3 x 10 -29 (C m). It suggests that a 5-10 nm BaTiO3 nanocrystal synthesized in an aqueous solution with ultrasound has spontaneous polarization.