Is the magnetoelectric coupling in stickup bilayers linear?

Zhang, N.; Liang, Dekai; Schneider, Thomas; Srinivasan, G.

doi:10.1063/1.2717131

Cited by 18 publications

(12 citation statements)

References 25 publications

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“…For mid-range thickness ratios, and for comparable thicknesses of PZT and Ni, when m approaches unity, the factor on the left-hand side of Equation (8) is approximately 1/3. This finding also agrees well with our own experimental results in addition to previous results [21]. For the equation s…”

Section: Resultssupporting

confidence: 83%

“…An interface factor, k, was introduced to estimate the contribution of the weak interface in the model using the average field method [20], in which the flexural deformation in the bilayer structure was ignored. Recently, researchers designed a similar interface structure in bilayer and trilayer Pb(Zr, Ti)O 3 (PZT)/Ni 0.8 Zn 0.2 Fe 2 O 3 (NZFO) composites [21]. This structure raised the concern that not only the weaker interface but also that the presence of non-linear flexural deformation reduced the ME effect in the bilayer ME composite.…”

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confidence: 99%

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The Influence of Flexural Deformation on the Static Magnetoelectric Coefficient of a Bilayered Magnetoelectric Composite

Shi

Tong

Zheng

et al. 2013

Materials Research Letters

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In the bilayered Ni/Pb(Zr, Ti)O 3 (PZT) composite, upon the application of a magnetic field, a strong flexural deformation was observed. Using an analogous scenario involving a known thermo bimetal, a simple formula for the curvature in the bilayered Ni/PZT composite was obtained. This result permitted the strain distribution and the static magnetoelectric (ME) coefficient in the bilayer composite to be easily solved. Experimental and theoretical results quantitatively explained how the flexural deformation weakened the ME effect in the bilayer composite, which agreed well with the experimental results from many previous experiments. Keywords: Layered Structures, Flexural Deformation, Magnetoelectric CompositeIntroduction Multiferroic materials have been drawn increasing interest due to the physics inherent in the coexistence of two or more states of ferrocity and their significant multi-field coupling effect [1], e.g. the magnetoelectric (ME) effect. Multiferroic composites constructed by combining magnetostrictive (MS) and piezoelectric materials have exhibited very large ME coefficients and are already employed in many prototype device applications such as magnetic field sensors [2], multi-state storage cells [3], and for use as miniature antennae [4]. In ME composites, the ME effect is a strainmedia product effect between the piezoelectric effect and the MS effect. The stress/strain transfer between the two phases plays a key role during the ME coupling, which is significantly affected by the structure of the composite. Until now, various topological structures have been designed [5] and used to prepare ME composites, such as 0-3 [6,7], 1-3 [8-10], 2-2 [11-13], and 2-1 [14] connectivity structures. To ensure simple fabrication and large resulting ME coefficients, laminated (2-2) ME composites containing bilayer, trilayer, or multilayer structures are the most widely studied [15][16][17][18].The laminated bilayer ME composites have shown very high ME coefficients and relatively low resonance frequencies when loaded in flexural modes. Their flexural

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Section: Resultssupporting

confidence: 83%

mentioning

confidence: 99%

The Influence of Flexural Deformation on the Static Magnetoelectric Coefficient of a Bilayered Magnetoelectric Composite

Shi

Tong

Zheng

et al. 2013

Materials Research Letters

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“…α ME in an asymmetric structure is approximately half of that in a symmetric structure with same constituents. This result agrees with those from earlier experiments conducted by others (Zhang et al 2007;Shi et al 2013;Pan et al 2009). Moreover, the ME interactions of both structures are found to be significantly dependent on the direction of applied magnetic bias.…”

Section: Me Interaction Structures Design and Operation Modesupporting

confidence: 83%

Magneto-Mechano-Electric (MME) Energy Harvesting Properties of Piezoelectric Macro-fiber Composite/Ni Magnetoelectric Generator

Kambale¹,

Kang²,

Yoon

et al. 2014

Energy Harvesting and Systems

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Asymmetric and symmetric magnetoelectric (ME) laminates structures of piezoelectric macro-fiber composite (MFC)/nickel (Ni) were fabricated and investigated their ME and magneto-mechano-electric (MME) energy harvesting responses to an applied magnetic/ mechanical stimulations. Both the structures strongly revealed the dependence of ME voltage coefficient (α ME ) on applied magnetic field directions with an important feature of a zero-bias field ME response. This is much more beneficial for designing the magnetic field sensors. The fabricated MFC/Ni structures exhibited good energy harvesting response to applied simultaneous magnetic/ mechanical vibrations of lab magnetic stirrer. The electric power was successfully harnessed from magnetomechanical stimulations; the resulting potential and power were up to ,20 V p-p and ,6 μW respectively, which are quite enough power to light a commercial red LED with traditional rectifier circuit and capacitor. Hence, the present MFC/Ni ME generators provide their future feasibility having self-biasing feature for designing the magnetic field sensors as well as for powering small consumer electronic devices and wireless sensor network systems by exploiting mechanical/magnetic stimulations from surrounding.

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“…9,10 Accordingly, we have proposed that nonlinear deformation, such as bending or tortuosity, may occur in bilayers because of the asymmetry stress-structure. 12 Then, many scholars worked on the flexural deformation of layered ME composites. [13][14][15] Zhan derived MEVC expression for bilayer Ni/ Pb(Zr, Ti)O 3 composite based on a bending mode.…”

Section: Introductionmentioning

confidence: 99%

Influence of nonuniform internal stress on magnetoelectric coupling in bilayers of ferromagnet/ferroelectrics

Jin

Luo

Zhang

2015

Journal of Applied Physics

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The influence of nonuniform internal stress on magnetoelectric coupling in bonded layered composites of ferromagnet and ferroelectrics was discussed. The distribution of the inner stress in the ferroelectrics layer under an applied field was studied. A new expression for the magnetoelectric voltage coefficients (MEVC) was obtained through extending Harshe's model, which was derived based on a uniform internal stress in the ferroelectric layer, to the cases with non-uniform internal stresses. The MEVC from the new model is evidently less than that obtained from Harshe's model. According to the new model, one can explain why the observed MEVC values were much less than that calculated from Harshe's model. V C 2015 AIP Publishing LLC.

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Is the magnetoelectric coupling in stickup bilayers linear?

Cited by 18 publications

References 25 publications

The Influence of Flexural Deformation on the Static Magnetoelectric Coefficient of a Bilayered Magnetoelectric Composite

The Influence of Flexural Deformation on the Static Magnetoelectric Coefficient of a Bilayered Magnetoelectric Composite

Magneto-Mechano-Electric (MME) Energy Harvesting Properties of Piezoelectric Macro-fiber Composite/Ni Magnetoelectric Generator

Influence of nonuniform internal stress on magnetoelectric coupling in bilayers of ferromagnet/ferroelectrics

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