Indication of above-room temperature magnetoelectricity in CoFe2O4/Cr2O3 nanocomposite

Barik, A.; Sahoo, M. R.; Kuila, S.; Tiwary, Sweta; Vishwakarma, P. N.

doi:10.1016/j.jmmm.2019.165880

Cited by 13 publications

(12 citation statements)

References 39 publications

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“…There is one-to-one correspondence between the variation of micro-strain and (2β/d) with the change in CZFMO concentrations. So the magneto electric coefficient is the contributions of interfacial phenomena mediated through the strain, but not due to the bulk phenomena 58 . The value of (3γ/d) is found to be negative and the value is very small (~ × 10 −7 mV/cm-Oe 3 ).…”

Section: Results Discussionmentioning

confidence: 99%

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Bhoi

Mohanty

Ravikant

et al. 2021

Sci Rep

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Multiferroic composites are promising candidates for magnetic field sensors, next-generation low power memory and spintronic devices, as they exhibit much higher magnetoelectric (ME) coupling and coupled ordering parameters compared to the single-phase multiferroics. Hence, the 3-0 type particulate multiferroic composites having general formula (1 − Φ)[PbFe0.5Nb0.5O3]-Φ[Co0.6Zn0.4Fe1.7Mn0.3O4] (Φ = 0.0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 1.0, (1 − Φ) PFN-ΦCZFMO) were prepared using a hybrid synthesis technique. Preliminary structural and microstructural analysis were carried out using XRD and FESEM techniques, which suggest the formation of 3-0 type particulate composite without the presence of any impurity phases. The multiferroic behaviour of the composites is studied with polarization versus electric field (P-E) and magnetization versus magnetic field (M-H) characteristics at room temperature. The nature of ME coupling was investigated elaborately by employing the Landau free energy equation along with the magneto-capacitance measurement. This investigation suggests the existence of biquadratic nature of ME coupling (P2M2). The magneto-electric coupling measurement also suggests that strain mediated domain coupling between the ferroelectric and magnetic ordering is responsible for the magneto-electric behaviour. The obtained value of direct ME coefficient 26.78 mV/cm-Oe for Φ = 0.3, found to be higher than the well-known single-phase materials and polycrystalline composites.

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Section: Results Discussionmentioning

confidence: 99%

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Bhoi

Mohanty

Ravikant

et al. 2021

Sci Rep

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“…In this equation, the first and second terms stand for FiM contribution and the last term for paramagnetic contribution. 50–52 where and ; I = 1, 2. Here ( H + H c i ) and ( H − H c i ) are used for fitting the data of two arms (decreasing and increasing field) of M – H loops.…”

Section: Resultsmentioning

confidence: 99%

“…In this equation, the first and second terms stand for FiM contribution and the last term for paramagnetic contribution. [50][51][52]…”

Section: Magnetic Studymentioning

confidence: 99%

Manganese substitution induced magnetic transformation and magnetoelectricity in SrFe₁₂O₁₉

Sahoo

Barik

Ghosh

et al. 2023

Phys. Chem. Chem. Phys.

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“…RT polarization–electric field ( P – E ) hysteresis loops are measured by a Precision II ferroelectric loop tracer interfaced with a 10 kV high-voltage amplifier (Trek), and then the data are collected with the help of Vision Data Acquisition Software in a Precision Materials analyzer from Radiant Technologies, Inc. The internal impedance of the device is measured using a lock-in-amplifier (SR830) . The alternating-current (ac) conductivity (σ ac ) of the film samples is calculated in terms of impedance ( z ) as follows: σ ac = d A .25em Z ′ Z ′ 2 + Z ″ 2 where A is the area, d is the thickness of the film sample, and Z ′ and Z ″ are the real and imaginary parts of the impedance, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The internal impedance of the device is measured using a lock-inamplifier (SR830). 23 The alternating-current (ac) conductivity (σ ac ) of the film samples is calculated in terms of impedance (z) 24 as follows:…”

Section: Characterization Techniquesmentioning

confidence: 99%

Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

Ghosh

Barik

Sahoo

et al. 2023

ACS Appl. Nano Mater.

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The present work reports an enhanced magnetoelectric (ME) effect at room temperature (RT) and above in a nanocomposite of LaYFe 2 O 6 /poly(vinylidene fluoride)−hexafluoropropylene [LaYFe 2 O 6 /P(VDF-HFP)], which is prepared by the solution-casting method. Field-emission scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy reveal excellent phase-to-phase connectivity and an enhanced beta-phase fraction in the PVDF matrix by the incorporation of 10 wt % antiferromagnetic nanoparticles (NPs). This is also substantiated by the improved ferroelectric (electric-field-dependent polarization) response by a 10 wt % sample. At RT, this nanocomposite manifests a first-order ME coupling coefficient of ∼2.92 mV cm −1 Oe −1 and a second-order ME coupling coefficient of ∼0.051 μV cm −1 Oe −2 (significantly 1 order higher than that of pristine LaYFe 2 O 6 ). The enhanced ME coefficient at RT and above makes it a viable candidate to address the challenges of ME-based device applications. A flexible, portable, lightweight, costeffective magnetoelectric nanogenerator (MENG) fabricated from the nanocomposite film is able to harvest the wasted magnetic energy with an efficiency of 1.5%. As a demonstration, the harvested electric energy is stored in a capacitor, which, in turn, is used to power a light-emitting diode (LED). The present work hence suggests the deployment of this material for self-powered wearable devices.

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Indication of above-room temperature magnetoelectricity in CoFe2O4/Cr2O3 nanocomposite

Cited by 13 publications

References 39 publications

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Manganese substitution induced magnetic transformation and magnetoelectricity in SrFe₁₂O₁₉

Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

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Indication of above-room temperature magnetoelectricity in CoFe2O4/Cr2O3 nanocomposite

Cited by 13 publications

References 39 publications

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Unravelling the nature of magneto-electric coupling in room temperature multiferroic particulate (PbFe0.5Nb0.5O3)–(Co0.6Zn0.4Fe1.7Mn0.3O4) composites

Manganese substitution induced magnetic transformation and magnetoelectricity in SrFe12O19

Energy-Harvesting Performance in a LaYFe2O6/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

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Resources

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Manganese substitution induced magnetic transformation and magnetoelectricity in SrFe₁₂O₁₉

Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect