Electrostrain-controlled displacement-permeability in composite of ferroelectrics and heterotypic complex ferrite

Wang, Z. L.; Luo, X. B.; Zhang, N.; Fang, X.; Mao, J. M.
April 2009
Applied Physics Letters;4/27/2009, Vol. 94 Issue 17, p172505
Academic Journal
By using the product effects of electrostrain and displacement-permeability, a composite containing a bar of Pb(Zr,Ti)O3 and two I-shaped ferrites were developed, and its electromagnetic effect was investigated. Under a constant electric field of 5 kV/cm, about 36% of the electric field-controlled permeability and impedance were observed in a considerably wide scope of frequency. The electric-field dependent inductance and impedance of the composite device showed a ferroelectric relaxation behavior. Analysis showed that the degenerating field-dependent permeability was responsible for the electromagnetic effects observed.


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