Magnetoelectric effects in multiferroic fibrous composite with imperfect interface

Journal Article · Sat Dec 01 04:00:00 EST 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.76.214107· OSTI ID:21052801

Wang, X; Pan, E ^[1]

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1. Department of Civil Engineering and Department of Applied Mathematics, University of Akron, Akron, Ohio 44325-3905 (United States)

This paper investigates the magnetoelectroelastic responses of multiferroic fibrous composites with imperfectly bonded interface under longitudinal shear. The proposed imperfect interface model is a natural generalization of the shear lag (or the spring layer) model. By virtue of the complex variable method, we first consider the case where an isolated circular multiferroic fiber is imperfectly bonded to an infinite multiferroic matrix. Very concise expressions for the complex field potentials characterizing the magnetoelectroelastic fields inside and outside the circular fiber are obtained when the matrix is subjected to the remote uniform magnetoelectroelastic loading. The Mori-Tanaka mean-field method is then employed to derive the effective moduli of the multiferroic fibrous composite made of randomly distributed fibers reinforced to the matrix. Particularly we demonstrate that the interfacial imperfection in elasticity, electricity, and magnetism will always cause a significant reduction in the magnetoelectric coefficient of the BaTiO{sub 3}-CoFe{sub 2}O{sub 4} fibrous composite.

• OSTI ID: 21052801
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 21 Vol. 76; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
COBALT OXIDES
COMPOSITE MATERIALS
DEFECTS
DIELECTRIC PROPERTIES
ELASTICITY
ELECTRICITY
FIBERS
INTERFACES
LAYERS
LOADING
MAGNETIC PROPERTIES
MAGNETISM
MEAN-FIELD THEORY
REINFORCED MATERIALS
TITANATES