Dynamic magneto-mechanical properties of epoxy-bonded Terfenol-D composites

Hudson, J.; Busbridge, S.C.; Piercy, A.R.

doi:10.1016/s0924-4247(99)00178-8

Cited by 32 publications

(16 citation statements)

References 4 publications

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“…The measured response is quite similar to the relative permeability r response reported earlier. 16 Given a magnetic bias H Bias , the fundamental longitudinal resonance appears at f ϳ60 kHz and the peak at ϳ120 kHz represents the second harmonic resonance. Figure 4 shows the dependence of ␣ E on f, i.e., disper- sion of the ME effect, under different H Bias .…”

Section: Methodsmentioning

confidence: 99%

“…15 To overcome this difficulty, Terfenol-D/ polymer composite is an excellent alternative because of its lower eddy current loss in the region of high frequency. 16 a͒ Author to whom correspondence should be addressed; electronic mail: wanjg@nju.edu.cn Moreover, its tailorable properties enable it to meet the special ME coupling. 16 -18 In this article, we report a ME composite structure based on 0-3 Terfenol-D/Epoxy composite ͓magneto-strictive component ͑MSCP͔͒ combined with 0-3 Pb (Zr 0.52 Ti 0.48 )O 3 /epoxy composite ͓piezoelectric component ͑PECP͔͒.…”

Section: Introductionmentioning

confidence: 99%

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Giant magnetoelectric effect of a hybrid of magnetostrictive and piezoelectric composites

Wan

Liu

Chand

et al. 2003

Journal of Applied Physics

132

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A magnetoelectric ͑ME͒ hybrid structure is constructed by an efficient coupling between magnetostrictive Terfenol-D (Tb 0.27-0.30 Dy 0.73-0.70 Fe 1.90-1.95 )/epoxy and piezoelectric leadzirconate-titanate ͓Pb(Zr 0.52 Ti 0.48 )O 3 ͔/epoxy composites. Significant ME effect produced by the piezoelectric k 31 coupling with the longitudinal vibration of the magnetostrictive component over a wide range of frequency is observed. It is revealed that the ME effect can be enhanced by applying an optimized magnetic bias. A magnetoelectric voltage coefficient as high as 8700 mV/cm Oe is recorded at the resonance frequency of 59.2 kHz for the structure with an optimized magnetic bias of 0.7 kOe. Our measurement confirms that the eddy current loss remains negligibly small at an operating frequency as high as ϳ200 kHz, predicting very promising applications of the present ME structure.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Giant magnetoelectric effect of a hybrid of magnetostrictive and piezoelectric composites

Wan

Liu

Chand

et al. 2003

Journal of Applied Physics

132

View full text Add to dashboard Cite

show abstract

“…Several decades ago, dynamic measurement was also used to investigate magnetostrictive Terfenol-D alloys to show their potential as transducers. These measurements were performed either with a strain gauge [63][64][65], an accelerometer [66], a laser-Dopplervibrometry system [67,68] or by using a three-terminal capacitance technique [69].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Magnetostriction of CoFe2O4 and Its Role in Magnetoelectric Composites

et al. 2018

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Applications of magnetostrictive materials commonly involve the use of the dynamic deformation, i.e., the piezomagnetic effect. Usually, this effect is described by the strain derivative ∂λ=∂H, which is deduced from the quasistatic magnetostrictive curve. However, the strain derivative might not be accurate to describe dynamic deformation in semihard materials as cobalt ferrite (CFO). To highlight this issue, dynamic magnetostriction measurements of cobalt ferrite are performed and compared with the strain derivative. The experiment shows that measured piezomagnetic coefficients are much lower than the strain derivative. To point out the direct application of this effect, low-frequency magnetoelectric (ME) measurements are also conducted on bilayers CFO=PbðZr; TiÞO 3 . The experimental data are compared with calculated magnetoelectric coefficients which include a measured dynamic coefficient and result in very low relative error (<5%), highlighting the relevance of using a piezomagnetic coefficient derived from dynamic magnetostriction instead of a strain derivative coefficient to model ME composites. The magnetoelectric effect is then measured for several amplitudes of the alternating field H ac , and a nonlinear response is revealed. Based on these results, a trilayer CFO/PbðZr; TiÞO 3 /CFO is made exhibiting a high magnetoelectric coefficient of 578 mV=A (approximately 460 mV=cm Oe) in an ac field of 38.2 kA=m (about 48 mT) at low frequency, which is 3 times higher than the measured value at 0.8 kA=m (approximately 1 mT). We discuss the viability of using semihard materials like cobalt ferrite for dynamic magnetostrictive applications such as the magnetoelectric effect.

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“…The main disadvantages with Terfenol-D are the frequency limitation due to eddy current losses and the difficulty in machining and fabricating devices owing to its brittleness. Considerable efforts have been taken to solve these problems and develop magnetostrictive composites of Terfenol-D and nonmagnetic polymer [3][4][5][6][7][8][9]; such composites possess high resistance and high tensile strength. Duenas and Carman [8] investigated the effects of particle size and particle size distribution on magnetostrictive and magnetoelastic strain response.…”

Section: Introductionmentioning

confidence: 99%