Dielectric relaxations and dielectric response in multiferroic BiFeO3 ceramics

被引：158

作者：

Hunpratub, Sitchai ^{[1
]}

Thongbai, Prasit ^{[1
]}

Yamwong, Teerapon ^{[2
]}

Yimnirun, Rattikorn ^{[3
]}

Maensiri, Santi ^{[1
]}

机构：

[1] Khon Kaen Univ, Dept Phys, Khon Kaen 40002, Thailand

[2] Natl Met & Mat Technol Ctr MTEC, Pathum Thani 12120, Thailand

[3] Chiang Mai Univ, Fac Sci, Dept Phys, Chiang Mai 50200, Thailand

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

关键词：

bismuth compounds; dielectric function; dielectric relaxation; ferroelectric ceramics; grain boundaries; hopping conduction; multiferroics; permittivity; powder technology; CACU3TI4O12; POLARIZATION;

D O I：

10.1063/1.3078825

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-phase multiferroic BiFeO3 ceramics were fabricated using pure precipitation-prepared BiFeO3 powder. Dielectric response of BiFeO3 ceramics was investigated over a wide range of temperature and frequency. Our results reveal that the BiFeO3 ceramic sintered at 700 degrees C exhibited high dielectric permittivity, and three dielectric relaxations were observed. A Debye-type dielectric relaxation at low temperatures (-50 to 20 degrees C) is attributed to the carrier hopping process between Fe2+ and Fe3+. The other two dielectric relaxations at the temperature ranges 30-130 degrees C and 140-200 degrees C could be due to the grain boundary effect and the defect ordering and/or the conductivity, respectively.

引用

页数：3

共 28 条

[1] Dispersion and absorption in dielectrics I. Alternating current characteristics [J].

Cole, KS ;

Cole, RH .

JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (04) :341-351

[2] Structural and multiferroic properties of La-modified BiFeO3 ceramics [J].

Das, S. R. ;

Choudhary, R. N. P. ;

Bhattacharya, P. ;

Katiyar, R. S. ;

Dutta, P. ;

Manivannan, A. ;

Seehra, M. S. .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (03)

[3] Comment on "Epitaxial BiFeO3 multiferroic thin film heterostructures" [J].

Eerenstein, W ;

Morrison, FD ;

Dho, J ;

Blamire, MG ;

Scott, JF ;

Mathur, ND .

SCIENCE, 2005, 307 (5713) :1203-1203

[4] High intrinsic permittivity in Na1/2Bi1/2Cu3Ti4O12 [J].

Ferrarelli, Matthew C. ;

Adams, Timothy B. ;

Feteira, Antonio ;

Sinclair, Derek C. ;

West, Anthony R. .

APPLIED PHYSICS LETTERS, 2006, 89 (21)

[5] Revival of the magnetoelectric effect [J].

Fiebig, M .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (08) :R123-R152

[6]

HUNPRATUB S, PREPARATION CH UNPUB

[7] Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4 [J].

Ikeda, N ;

Ohsumi, H ;

Ohwada, K ;

Ishii, K ;

Inami, T ;

Kakurai, K ;

Murakami, Y ;

Yoshii, K ;

Mori, S ;

Horibe, Y ;

Kitô, H .

NATURE, 2005, 436 (7054) :1136-1138

[8]

*JCPDS, 742493 JCPDS

[9] Multiferroic properties of Bi0.87La0.05Tb0.08FeO3 ceramics prepared by spark plasma sintering [J].

Jiang, Q. H. ;

Ma, J. ;

Lin, Y. H. ;

Nan, Ce-Wen ;

Shi, Z. ;

Shen, Z. J. .

APPLIED PHYSICS LETTERS, 2007, 91 (02)

[10] Infrared and terahertz studies of polar phonons and magnetodielectric effect in multiferroic BiFeO3 ceramics [J].

Kamba, S. ;

Nuzhnyy, D. ;

Savinov, M. ;

Sebek, J. ;

Petzelt, J. ;

Prokleska, J. ;

Haumont, R. ;

Kreisel, J. .

PHYSICAL REVIEW B, 2007, 75 (02)

← 1 2 3 →