A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

Rasly, M.; Afifi, M.; Shalan, Ahmed Esmail; Rashad, M.M.

doi:10.1007/s00339-017-0954-x

Cited by 27 publications

(7 citation statements)

References 23 publications

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“…28 Compared to NP and NW, magnetoelectric composites NP-BTO 1 : 1 and NW-BTO 1 : 1 show an evident decrease of the M S , M R and H C values, which is due to the diamagnetic BTO nanoparticles present in these samples. 21,47 On increasing the wt% of BTO, M S and M R decrease at all temperatures for both NP-BTO and NW-BTO series, as expected. However, in both the series, M-H at all temperatures shows an abnormal trend of H C with an increase in the BTO wt% (see Tables 1 and 2).…”

Section: Magnetic Measurementssupporting

confidence: 76%

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites

et al. 2021

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Section: Magnetic Measurementssupporting

confidence: 76%

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites

et al. 2021

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“…Indeed, cobalt ferrites are very attractive for this purpose and have been used either in laminated [15,[42][43][44][45][46][47][48][49] or in particulate [50][51][52][53][54][55] composites. The direct ME effect consists of a change in the electric polarization induced by a magnetic field.…”

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 crystallite size in the polymeric phase was calculated using Scherrer's formula: 49–51 where D refers to the crystallite size in nm, k represents the shape factor (0.9), λ is the wavelength of the X-rays (1.54056 Å for CuK α radiation), while β hkl is the full width at half maximum expressed in radians, and θ is the Bragg diffraction angle.…”

Section: Methodsmentioning

confidence: 99%

Polycaprolactone-based antibacterial nanofibrous scaffolds containing vanadium/hydroxyapatite and their morphology, mechanical properties, and in vitro studies

Al-Wafi

2022

New J. Chem.

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A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

Cited by 27 publications

References 23 publications

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites

Dynamic Magnetostriction of CoFe2O4 and Its Role in Magnetoelectric Composites

Polycaprolactone-based antibacterial nanofibrous scaffolds containing vanadium/hydroxyapatite and their morphology, mechanical properties, and in vitro studies

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A quantitative model based on an experimental study for the magnetoelectric coupling at the interface of cobalt ferrite–barium titanate nanocomposites

Cited by 27 publications

References 23 publications

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO3 composites

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO3 composites

Dynamic Magnetostriction of CoFe2O4 and Its Role in Magnetoelectric Composites

Polycaprolactone-based antibacterial nanofibrous scaffolds containing vanadium/hydroxyapatite and their morphology, mechanical properties, and in vitro studies

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Product

Resources

About

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites

Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO₃ composites