The analysis of piezoelectric/piezomagnetic composite materials containing ellipsoidal inclusions

Journal Article · Fri Jan 31 23:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.363874· OSTI ID:450237

Huang, J H ^[1]; Kuo, W ^[2]

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1. Department of Mechanical Engineering, Feng Chia University, Taichung 407, Taiwan, Republic of (China)
2. Department of Textile Engineering, Feng Chia University, Taichung 407, Taiwan, Republic of (China)

A unified method based on the inclusion formulation is proposed to determine the magnetic, electric, and elastic fields in a composite with piezoelectric and piezomagnetic phases. The composite reinforcements are treated as ellipsoidal inclusions that enable the reinforcement geometries ranging from thin flakes to continuous fibers. Utilizing the proposed method, the magneto-electro-elastic tensors analogous to Eshelby tensors for elastic ellipsoidal inclusions are obtained. With these tensors, the magnetic, electric, and elastic fields around the inclusion as well as concentration factors are determined. Furthermore, based upon the Mori{endash}Tanaka mean-field theory [Acta Metall. {bold 21}, 571 (1973)] to account for the interaction between inclusions and matrix, the effective magneto-electro-elastic constants (elastic moduli, piezoelectric coefficients, dielectric constants, piezomagnetic coefficients, magnetoelectric, and magnetic permeability) of the composites are expressed explicitly in terms of phase properties, volume fraction, and inhomogeneity shape. The numerical examinations have been conducted for the three-dimensional BaTiO{sub 3}{endash}CoFe{sub 2}O{sub 4} composite, and the overall composite behavior has been examined numerically. It is found that the composite reveals interesting magnetoelectric coupling which is absent in each constituent. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 450237
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
COBALT OXIDES
COMPOSITE MATERIALS
ELASTICITY
ELECTRIC CONDUCTIVITY
FERRITES
FERROELECTRIC MATERIALS
INCLUSIONS
IRON OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MECHANICAL PROPERTIES
PERMITTIVITY
PHYSICAL PROPERTIES
PIEZOELECTRICITY
REINFORCED MATERIALS
TITANATES
magnetoelastic effects
magnetomechanical effects