Measurement of Dielectric Properties of Ultrafine BaTiO3 Using an Organic-Inorganic Composite Method
Artikel i vetenskaplig tidskrift, 2015

Ultrafine BaTiO3, unlike traditional ferroelectric materials, demonstrates some interesting dielectric properties, such as a gradual transition from paraelectric to ferroelectric phase, which is similar to dielectric relaxation ferroelectrics. Although several methods have been recently proposed to measure the dielectric properties of ultrafine BaTiO3, the problem still remains unsolved. This paper proposes a new method to estimate the dielectric properties of ultrafine BaTiO3 by measuring and analyzing the dielectric properties of BaTiO3-epoxy composites. The Novocontrol dielectric measuring system was employed to measure the dielectric response of the composites. The dielectric behavior and relaxation characteristics of the BaTiO3 filler were estimated by modeling and calculating the dielectric constant based on different mixture theories. Results reveal that the effect of surface states yields dielectric relaxation in ultrafine BaTiO3.

microstructure model

composite material

dielectric relaxation

Ultrafine BaTiO3


Jie Bao

Shanghai University

Huangshan University

W. W. Wang

Xi'an Jiaotong University

S. T. Li

Xi'an Jiaotong University

Johan Liu

Chalmers, Teknisk fysik, Elektronikmaterial

Journal of Electronic Materials

0361-5235 (ISSN) 1543-186X (eISSN)

Vol. 44 7 2300-2307


Annan elektroteknik och elektronik

Den kondenserade materiens fysik



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