Room-temperature magnetoelectric coupling study of multiferroic (1−x)(0.7BiFeO3-0.3Bi0.5Na0.5TiO3)-xCoFe2O4 ceramics

Wang, L. G.; Zhu, Canhong; Chen, L.; Li, C. L.; Yuan, Songliu

doi:10.1007/s10971-016-4296-5

Cited by 10 publications

(2 citation statements)

References 25 publications

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“…The magnetoelectric cross-coupling coefficient (α 33 ME ) increases gradually with the magnetic field and reaches about 1.42 mV/m·Oe for 5 kOe. A similar trend is observed in multiferroic ceramics and thin film interfaces. , However, the (α 33 ME ) induced by the magnetostrictive ZCF phase on the piezoelectric PMMA/PVDF-HFP matrix is considerably lower than necessary to account for the multicaloric effect.…”

Section: Resultssupporting

confidence: 69%

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Multiferroic Electroactive Polymer Blend/Ferrite Nanocomposite Flexible Films for Cooling Devices

Prabhakaran

Aepuru

Béron

et al. 2023

ACS Appl. Polym. Mater.

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In recent days, the interest toward the development of multicaloric materials for cooling application is increasing, whereas multiferroic materials would be the suitable alternative to the conventional refrigerants. To explore them, the poly(methyl methacrylate)/poly(vinylidenefluoride-co-hexafluoropropylene) (PMMA/PVDF-HFP) blend and PMMA/PVDF-HFP/Zn0.5Cu0.5Fe2O4 flexible multiferroic nanocomposite films were fabricated by the solution casting method. The structural analyses prove that the strong interfacial interaction between the PMMA/PVDF-HFP blend and the Zn0.5Cu0.5Fe2O4 (ZCF) through hydroxyl (−OH) and carbonyl group bonding with PVDF-HFP enhanced the thermal stability and suppressed the electroactive β phase from 67 to 62%. Experimental results show that 10 wt % of superparamagnetic ZCF nanoparticles with a particle size of 6.8 nm induced both the magnetocaloric and magnetoelectric effects in a nonmagnetic PMMA/PVDF-HFP ferroelectric matrix at room temperature. A set of isothermal magnetization curves were recorded in the magnetic field strength of 0–40 kOe and a temperature range of 2–400 K. The maximum magnetic entropy changes (ΔS M) of −0.69 J·kg–1 K–1 of ZCF nanoparticles and −0.094 J·kg–1 K–1 of PMMA/PVDF-HFP/ZCF nanocomposites showed an interesting table-like flat variation in the temperature range of 100–400 K as a function of the magnetic field. The samples display a large temperature span with a relative cooling power of 293 and 40 J·kg–1 for ZCF and PMMA/PVDF-HFP/ZCF, respectively. The magnetoelectric effect of the PMMA/PVDF-HFP/ZCF composite was proved, but it generated only 1.42 mV/m·Oe in the applied field of 5 kOe. Hence, the entropy change of the present nanocomposite was only due to the magnetocaloric effect, where the magnetoelectric cross-coupling coefficient was negligible. The multicaloric effect could be established if the nanocomposite showed a larger magnetoelectric cross-coupling in addition to the magnetocaloric effect. This approach provides the research findings in functional multiferroic polymer nanocomposites for miniaturized cooling devices.

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Section: Resultssupporting

confidence: 69%

“…A similar trend is observed in multiferroic ceramics and thin film interfaces. 57,58 However, the (α 33…”

Section: Dielectric Studies and Magnetoelectric Effectmentioning

confidence: 99%

Multiferroic Electroactive Polymer Blend/Ferrite Nanocomposite Flexible Films for Cooling Devices

Prabhakaran

Aepuru

Béron

et al. 2023

ACS Appl. Polym. Mater.

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Investigations on the structural, magnetic and optical properties of Sr–Zr co-doped BiFeO3 multiferroic powders

Wang

Song

2018

J Mater Sci: Mater Electron

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Substitution driven enhancement of ferromagnetic, ferroelectric and leakage properties in multiferroic 0.7Bi1−xErxFeO3-0.3Bi0.5Na0.5TiO3 solid solutions

Chakrabarti

Chen

et al. 2019

J Sol-Gel Sci Technol

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Room-temperature magnetoelectric coupling study of multiferroic (1−x)(0.7BiFeO3-0.3Bi0.5Na0.5TiO3)-xCoFe2O4 ceramics

Cited by 10 publications

References 25 publications

Multiferroic Electroactive Polymer Blend/Ferrite Nanocomposite Flexible Films for Cooling Devices

Multiferroic Electroactive Polymer Blend/Ferrite Nanocomposite Flexible Films for Cooling Devices

Investigations on the structural, magnetic and optical properties of Sr–Zr co-doped BiFeO3 multiferroic powders

Substitution driven enhancement of ferromagnetic, ferroelectric and leakage properties in multiferroic 0.7Bi1−xErxFeO3-0.3Bi0.5Na0.5TiO3 solid solutions

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