The effective magnetoelectric coefficients of polycrystalline multiferroic composites

被引:88
作者
Srinivas, S [1 ]
Li, JY [1 ]
机构
[1] Univ Nebraska, Ctr Mat Res & Anal, Dept Mech Engn, Lincoln, NE 68588 USA
关键词
multiferroic composite; magnetoelectric effect; effective medium approximation; self-consistent approach;
D O I
10.1016/j.actamat.2005.05.014
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, we develop a self-consistent approach using effective medium approximation to calculate the macroscopic magnetoelectric (ME) coefficients of polycrystalline multiferroic composites, emphasizing the effects of shape, volume fraction, and orientation distribution of particles of both phases. This approach is especially suitable for composites with volume fractions of each phase close to 50%, in which there may not be a matrix phase present and thus mean field Mori-Tanaka model is not applicable. It is observed from the numerical calculations that the aligned particles result in highest ME coefficients and coupling factors, while randomly oriented particles lead to essentially zero ME coupling, even though the ME coefficient is an even rank tensorial property. In addition, it is observed that lamellar particles are optimal for ME coefficient a(11), while fibrous particles are optimal for a(33). We also postulate that the large discrepancy between theoretical calculations and experimental measurements for ME coefficients of multiferroic composites previously reported is partly due to the orientation distribution of particles that has rarely been considered. When our calculations took the orientation distribution of particles of both phases into account, good agreement with experimental data is observed. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:4135 / 4142
页数:8
相关论文
共 36 条
  • [1] Astrov D N, 1960, Zh. Eksp. Teor. Fiz., V11, P984
  • [2] MAGNETOELECTRIC EFFECT IN PIEZOELECTRIC MAGNETOSTRICTIVE MULTILAYER (2-2) COMPOSITES
    AVELLANEDA, M
    HARSHE, G
    [J]. JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 1994, 5 (04) : 501 - 513
  • [3] DISLOCATIONS AND LINE CHARGES IN ANISOTROPIC PIEZOELECTRIC INSULATORS
    BARNETT, DM
    LOTHE, J
    [J]. PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1975, 67 (01): : 105 - 111
  • [4] MAGNETOELECTRIC EFFECT IN FIBROUS COMPOSITES WITH PIEZOELECTRIC AND PIEZOMAGNETIC PHASES
    BENVENISTE, Y
    [J]. PHYSICAL REVIEW B, 1995, 51 (22) : 16424 - 16427
  • [5] A BROAD-BAND MAGNETOELECTRIC TRANSDUCER USING A COMPOSITE-MATERIAL
    BRACKE, LPM
    VANVLIET, RG
    [J]. INTERNATIONAL JOURNAL OF ELECTRONICS, 1981, 51 (03) : 255 - 262
  • [6] Dielectric, ferroelectric, magnetic, and magnetoelectric properties of multiferroic laminated composites
    Cai, N
    Zhai, J
    Nan, CW
    Lin, Y
    Shi, Z
    [J]. PHYSICAL REVIEW B, 2003, 68 (22)
  • [7] Exploration of artificial multiferroic thin-film heterostructures using composition spreads
    Chang, KS
    Aronova, MA
    Lin, CL
    Murakami, M
    Yu, MH
    Hattrick-Simpers, J
    Famodu, OO
    Lee, SY
    Ramesh, R
    Wuttig, M
    Takeuchi, I
    Gao, C
    Bendersky, LA
    [J]. APPLIED PHYSICS LETTERS, 2004, 84 (16) : 3091 - 3093
  • [8] EFFECTS OF GRAIN SHAPE ANISOTROPY, POROSITY, AND MICROCRACKS ON THE ELASTIC AND DIELECTRIC-CONSTANTS OF POLYCRYSTALLINE PIEZOELECTRIC CERAMICS
    DUNN, ML
    [J]. JOURNAL OF APPLIED PHYSICS, 1995, 78 (03) : 1533 - 1541
  • [9] Dzyaloshinskii I.E., 1959, SOV PHYS JETP, V37, P881
  • [10] THE DETERMINATION OF THE ELASTIC FIELD OF AN ELLIPSOIDAL INCLUSION, AND RELATED PROBLEMS
    ESHELBY, JD
    [J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1957, 241 (1226): : 376 - 396