Electrical properties of multiferroic BiFeO3 ceramics synthesized by spark plasma sintering

被引：153

作者：

Dai, Zhonghua ^{[1
]}

Akishige, Yukikuni ^{[2
]}

机构：

[1] Shimane Univ, Res Project Promot Inst, Matsue, Shimane 6908504, Japan

[2] Shimane Univ, Fac Educ, Matsue, Shimane 6908504, Japan

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 44期

关键词：

POLYCRYSTALLINE BIFEO3; POLARIZATION; CRYSTAL;

D O I：

10.1088/0022-3727/43/44/445403

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-phase multiferroic BiFeO3 powder was prepared by improved solid-state synthesis, and dense BiFeO3 ceramics were fabricated by a spark plasma sintering (SPS) process. The sintering temperature of SPS ranged from 650 to 800 degrees C under 50 MPa. It is found that the sample is not only single phased but also of high density when sintered at 650 degrees C. The dielectric constant and loss of the samples were tested between 100 Hz and 20 MHz at several temperatures. Oxygen and vacuum annealing conditions impact the dielectric behaviour of the BiFeO3 ceramics prepared by the SPS technique obviously. The piezoelectric coefficient d(33) of the sample annealed in vacuum is 4.2 pCN(-1) at room temperature.

引用

页数：5

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