Dielectric and magnetoelectric characterization of CoFe2O4/Sr0.5Ba0.5Nb2O6 composites

被引：32

作者：

Chen, XM ^{[1
]}

Tang, YH

Chen, IW

Xu, ZC

Wu, SY

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 3210027, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 96卷 / 11期

关键词：

D O I：

10.1063/1.1809771

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoelectric composites were created through incorporating dispersed CoFe2O4 ferromagnetic grains into a Sr0.5Ba0.5Nb2O6 relaxor ferroelectric matrix. The two phases are chemically compatible and coexist in the dense, sintered composites. Unlike other relaxors, the Sr0.5Ba0.5Nb2O6-containing composites can be electrically poled. The apparent dielectric constant is enhanced by the conductivity in the ferrite phase and the space charge at the phase interface. A significant magnetoelectric effect was observed in all compositions investigated, with a maximum dE/dH value of 24.8 mV/cm/Oe obtained for 0.4CoFe(2)O(4)/0.6Sr(0.5)Ba(0.5)Nb(2)O(6), which is much greater than that of magnetoelectric compounds and solid solutions. These results demonstrate that the Pb-free (Sr,Ba)Nb2O6 relaxor can be advantageously used as the matrix for ferromagnetic/ferroelectric composites in the future development of magnetoelectric materials. (C) 2004 American Institute of Physics.

引用

页码：6520 / 6522

页数：3

共 17 条

[1]

BOOMGAARD JV, 1978, J MATER SCI, V13, P1538, DOI DOI 10.1007/BF00553210

[2] Coupling between the ferroelectric and antiferromagnetic orders in YMnO3 [J].

Huang, ZJ ;

Cao, Y ;

Sun, YY ;

Xue, YY ;

Chu, CW .

PHYSICAL REVIEW B, 1997, 56 (05) :2623-2626

[3] PHASE-TRANSITIONS IN FERROELECTRIC CERAMICS OF THE TYPE-SR0.5BA0.5NB2O6 [J].

JIMENEZ, B ;

ALEMANY, C ;

MENDIOLA, J ;

MAURER, E .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1985, 46 (12) :1383-1386

[4] Magnetoelectric properties of LiCoPO4 and LiNiPO4 [J].

Kornev, I ;

Bichurin, M ;

Rivera, JP ;

Gentil, S ;

Schmid, H ;

Jansen, AGM ;

Wyder, P .

PHYSICAL REVIEW B, 2000, 62 (18) :12247-12253

[5] Dielectric behaviour and magnetoelectric effect in copper-cobalt ferrite plus barium lead titanate composites [J].

Kothale, MB ;

Patankar, KK ;

Kadam, SL ;

Mathe, VL ;

Rao, AV ;

Chougule, BK .

MATERIALS CHEMISTRY AND PHYSICS, 2003, 77 (03) :691-696

[6] Investigation of the magnetoelectric effect in BiFeO3-BaTiO3 solid solutions [J].

Kumar, MM ;

Srinivas, A ;

Kumar, GS ;

Suryanarayana, SV .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (41) :8131-8139

[7] Magnetoelectric behavior in in situ grown piezoelectric and piezomagnetic composite-phase system [J].

Mazumder, S ;

Battacharyya, GS .

MATERIALS RESEARCH BULLETIN, 2003, 38 (02) :303-310

[8] MAGNETOELECTRIC EFFECT IN COMPOSITES OF PIEZOELECTRIC AND PIEZOMAGNETIC PHASES [J].

NAN, CW .

PHYSICAL REVIEW B, 1994, 50 (09) :6082-6088

[9] AC conductivity and magnetoelectric effect in MnFe1.8Cr0.2O4-BaTiO3 composites [J].

Patankar, KK ;

Dombale, PD ;

Mathe, VL ;

Patil, SA ;

Patil, RN .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2001, 87 (01) :53-58

[10] Dielectric behaviour and magnetoelectric effect in CuFe2O4-Ba0.8Pb0.2TiO3 composites [J].

Patankar, KK ;

Mathe, VL ;

Mahajan, RP ;

Patil, SA ;

Reddy, RM ;

SivaKumar, KV .

MATERIALS CHEMISTRY AND PHYSICS, 2001, 72 (01) :23-29

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