Magneto-electric coupling study in multiferroic La0.7Ba0.3MnO3–BaTiO3 composite ceramic at room temperature

Zhou, Ling; Fu, Qiuyun; Zhou, Dongxiang; Xue, Fei; Tian, Yuhui; Hao, Liangbin

doi:10.1016/j.ceramint.2014.10.049

Cited by 15 publications

(5 citation statements)

References 33 publications

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“…Both the loss tangent and the conductivity indicated that films with 30 wt % (28.97 vol %) core–shell fillers were still within the percolation threshold, thus the films could be considered as heterogeneous medium containing conductive bulks (FO cores) and insulating boundaries (BTO shells and polymer matrix). Therefore, the Maxwell–Wagner capacitor model, showed in Figure f, can be applied to discuss the IBLC effects. − The real and imaginary permittivities are given by the equations where ω = 2 πf is the angular frequency and R b ( C b ) and R i ( C i ) represent the conductive bulks and insulating boundaries resistances (capacitances), respectively. Here, τ i = C i R i , τ b = C b R b , , , A = area of the capacitor, and t = thickness.…”

Section: Results and Discussionmentioning

confidence: 99%

Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Zhou¹,

Fu²,

Xue

et al. 2017

ACS Appl. Mater. Interfaces

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Flexible nanocomposites composed of high dielectric constant fillers and polymer matrix have shown great potential for electrostatic capacitors and energy storage applications. To obtain the composited material with high dielectric constant and high breakdown strength, multi-interfacial composited particles, which composed of conductive cores and insulating shells and possessed the internal barrier layer capacitor (IBLC) effect, were adopted as fillers. Thus, FeO@BaTiO core-shell particles were prepared and loaded into the poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) polymer matrix. As the mass fraction of core-shell fillers increased from 2.5 wt % to 30 wt %, the dielectric constant of the films increased, while the loss tangent remained at a low level (<0.05 at 1 kHz). Both high electric displacement and high electric breakdown strength were achieved in the films with 10 wt % core-shell fillers loaded. The maximum energy storage density of 7.018 J/cm was measured at 2350 kV/cm, which shows significant enhancement than those of the pure P(VDF-HFP) films and analogous composited films with converse insulating-conductive core-shell fillers. A Maxwell-Wagner capacitor model was also adopted to interpret the efficiency of IBLC effects on the suppressed loss tangent and the superior breakdown strength. This work explored an effective approach to prepare dielectric nanocomposites for energy storage applications experimentally and theoretically.

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Section: Results and Discussionmentioning

confidence: 99%

Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Zhou¹,

Fu²,

Xue

et al. 2017

ACS Appl. Mater. Interfaces

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“…and magnetostrictive ( CoFe 2 O 4 , NiFe 2 O 4 , CuFe 2 O 4 , Terfenol-D etc.) phases can achieve large ME coupling at room temperature9101112. Multi-phase MF materials are therefore considered to be the candidates for the next generation of multifunctional devices such as sensors, transducers, actuators filters, high frequency microinductors, and tunable microwave devices131415161718.…”

mentioning

confidence: 99%

Ferromagnetic resonance induced large microwave magnetodielectric effect in cerium doped Y3Fe5O12 ferrites

Chen

Wang

Nie

et al. 2016

Sci Rep

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In recent years, multifunctional materials contained simultaneous ferroelectric and ferromagnetic ordering have been realized. Here, a real time room temperature adaptive materials system, which demonstrates an RF magnetodielectric (MD) response, i.e., CexY3−xFe5O12 (x = 0, 0.05, 0.1, 0.15, 0.2), is reported. The magnetic and dielectric properties of Ce-doped YIG microwave ferrites processed by a traditional ceramic route have been measured over a frequency range of 4–8 GHz (C-band). The substitution of Ce not only enhances the microwave electromagnetic properties of the YIG, but also modulates the magnetodielectric response. The maximum magnetodielectric response in Ce-doped YIG sample ranges in magnitude from approximately +5% to −5% under an applied field of 1.78 kOe. This effect was attributed to electron fluctuations on the Fe cation sites. Furthermore, the magnitude of the MD response was shown to be enhanced by the cerium content. It is believed that research of the magnetodielectric effect in YIG ferrites is of great importance to the development of next generation multifunctional adaptive microwave materials, devices and integrated circuits.

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“…Fig. 6(d) shows the changes of measured maximum polarization ǻP m (= P m (3 kOe) -P m (0 Oe)) and changes of remnant polarization ǻP r (= P r (3 kOe) -P r (0 Oe)) as functions of the electric field E. There is an obvious decrease in remnant polarization P r from 0.152 to 0.114 ȝC/cm 2 for BHFO ceramics, and an obvious decrease in P m from 0.77 to 0.73 ȝC/cm 2 for BLFO ceramics under the magnetic field [12,28]. Since the dielectric constant is obviously altered by a magnetic field, it is necessary to calculate the magnetodielectric (MD) effect, defined as [29] % 100…”

Section: Resultsmentioning

confidence: 94%

“…the effect of a magnetic field on ferroelectric polarization or, conversely, that of an electric field on magnetic order [7,11,12]. Since magnetic field can induce the variation in polarization, the field can also indirectly alter the dielectric constant of ME multiferroics, which is called magentodielectric (MD) effect.…”

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confidence: 98%

Properties of Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics

Xue

Zhou

et al. 2015

Ceramics International

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Magneto-electric coupling study in multiferroic La0.7Ba0.3MnO3–BaTiO3 composite ceramic at room temperature

Cited by 15 publications

References 33 publications

Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Ferromagnetic resonance induced large microwave magnetodielectric effect in cerium doped Y3Fe5O12 ferrites

Properties of Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics

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Magneto-electric coupling study in multiferroic La0.7Ba0.3MnO3–BaTiO3 composite ceramic at room temperature

Cited by 15 publications

References 33 publications

Multiple Interfacial Fe3O4@BaTiO3/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Multiple Interfacial Fe3O4@BaTiO3/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Ferromagnetic resonance induced large microwave magnetodielectric effect in cerium doped Y3Fe5O12 ferrites

Properties of Bi0.8Ln0.2FeO3 (Ln=La, Gd, Ho) multiferroic ceramics

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Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density

Multiple Interfacial Fe₃O₄@BaTiO₃/P(VDF-HFP) Core–Shell–Matrix Films with Internal Barrier Layer Capacitor (IBLC) Effects and High Energy Storage Density