학술논문
Electric Properties of Single-Phased BiFeO 3 Ceramics.
Document Type
Article
Author
Source
Subject
*CERAMIC materials
*ELECTRIC properties
*BISMUTH compounds
*SINTER (Metallurgy)
*METAL microstructure
*POLARIZATION (Electricity)
*X-ray diffraction
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Language
ISSN
0015-0193
Abstract
Densed BiFeO3(BFO) ceramics were sintered by using soft chemical derived fine powders. The microstructures, polarization and dielectric properties were investigated by means of X-rays diffraction (XRD), Scanning electron microscope (SEM), ferroelectric test system and impedance analyzer. The XRD patterns indicate that BFO ceramics with a single distorted perovskite structure are formed and no secondary phase appears in the ceramics. Through the dielectric response investigated over a wide range of temperature and frequency, it is found that the BFO ceramic sintered at 800°C exhibited high dielectric permittivity and two dielectric relaxations. The remanent polarization and maximum polarizations were 0.232 and 0.443 μC/cm2, respectively (at 25 kV/cm). [ABSTRACT FROM AUTHOR]