Magnetoelectric coupling on multiferroic cobalt ferrite–barium titanate ceramic composites with different connectivity schemes

Etier, Morad; Schmitz‐Antoniak, Carolin; Salamon, Soma; Trivedi, Harsh; Gao, Yingjie; Nazrabi, Ahmadshah; Landers, Joachim; Gautam, Devendraprakash; Winterer, Markus; Schmitz, D.; Wende, Heiko; Shvartsman, Vladimir V.; Lupascu, Doru C.

doi:10.1016/j.actamat.2015.02.032

Cited by 100 publications

(35 citation statements)

References 39 publications

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“…7(b) shows its zoomed-in view at lower field values. The shape of the M ME ( H ) curve is typical for bulk multiferroic composites containing CFO4445. Indeed, since the ME effect in such composites is due to strain coupling at the interface, the magnetoelectric coefficient can be written as , where q imn is the piezomagnetic coefficient, is an effective stiffness of the microstructure, and d jkl is the piezoelectric coefficient43.…”

Section: Resultsmentioning

confidence: 99%

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

Naveed-Ul-Haq

Shvartsman

Salamon

et al. 2016

Sci Rep

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The lead-free ferroelectric 0.5Ba(Zr0.2Ti0.8)O3 − 0.5(Ba0.7Ca0.3)TiO3 (BCZT) is a promising component for multifunctional multiferroics due to its excellent room temperature piezoelectric properties. Having a composition close to the polymorphic phase boundary between the orthorhombic and tetragonal phases, it deserves a case study for analysis of its potential for modern electronics applications. To obtain magnetoelectric coupling, the piezoelectric phase needs to be combined with a suitable magnetostrictive phase. In the current article, we report on the synthesis, dielectric, magnetic, and magnetoelectric characterization of a new magnetoelectric multiferroic composite consisting of BCZT as a piezoelectric phase and CoFe2O4 (CFO) as the magnetostrictive phase. We found that this material is multiferroic at room temperature and manifests a magnetoelectric effect larger than that of BaTiO3 −CoFe2O4 bulk composites with similar content of the ferrite phase.

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Section: Resultsmentioning

confidence: 99%

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

Naveed-Ul-Haq

Shvartsman

Salamon

et al. 2016

Sci Rep

Self Cite

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“…Particularly, it has been of great interest in achieving strong magnetoelectric coupling by combining ferroelectric barium titanate (BTO) with magnetic cobalt ferrite (CFO) [16], [17], [18]. BTO is one of the most typical ferroelectric materials with high dielectric constant and low dielectric loss [19].…”

Section: Introductionmentioning

confidence: 99%

“…As a widely used soft magnetic material, CFO is a spinel ferrite which exhibits excellent electromagnetic properties, high chemical stability, magneto-crystalline anisotropy and large magnetostriction coefficient [20]. Nevertheless, the desired magnetoelectric coupling properties of the composites have to be adjusted by volume ratio of the constituent phases, as well as the degree of interconnectivity and the properties of interface between BTO and CFO [16], [17], [18], [21].…”

Section: Introductionmentioning

confidence: 99%

Magnetic-field-induced dielectric behaviors and magneto-electrical coupling of multiferroic compounds containing cobalt ferrite/barium calcium titanate composite fibers

Zhang

Cheng

Chai

et al. 2018

Journal of Alloys and Compounds

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Multiferroics have broad application prospects in various fields such as multi-layer ceramic capacitors and multifunctional devices owing to their high dielectric constants and coupled magnetic and ferroelectric properties at room temperature. In this study, cobalt ferrite (CFO)/barium calcium titanate (BCT) composite fibers are prepared from BCT and CFO sols by an electrospinning method, and are then oriented by magnetic fields and sintered at high temperatures. The effects of magnetic fields and CFO contents on the nanostructures and magnetoelectric properties of the composites are investigated. Strong coupling between magnetic and ferroelectric properties occurs in CFO/BCT composites with magnetic orientation. More interestingly, the dielectric constants of CFO/BCT composites with magnetic orientation are found to be enhanced (by ∼1.5–3.5 times) as compared with those of BCT and CFO/BCT without magnetic orientation. The boost of dielectric constants of magnetic-field orientated CFO/BCT is attributed to the magneto-electrical coupling between CFO and BCT, where the polar domains of BCT are pinned by the orientated CFO. Therefore, this work not only provides a novel and effective approach in enhancing the dielectric constants of ceramic ferroelectrics, which is of tremendous value for industrial applications, but also elucidates the interaction mechanisms between ferromagnetic phase and ferroelectric phase in multiferroic compounds.

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“…Compared to single-phase materials [3,4], composite multiferroic materials show a much larger magnetoelectric effect and they are considered as a promising candidate for multiferroic materials. Barium titanate, BaTiO 3 , is often used as the ferroelectric constituent due to its excellent piezoelectric properties and lead-free chemical composition [5]. As for the ferromagnetic constituent, the M-type hexaferrite Ba(Sr) Fe 12 O 19 with magnetoplumbite structure has been extensively investigated due to its excellent magnetic properties and low cost [6].…”

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Enhanced resistivity impact on the magnetoelectric properties of diphase multiferroic BaTiO₃–BaFe_12−xMn_xO₁₉ composite ceramics

Gao

Wei

et al. 2017

Physica Rapid Research Ltrs

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The multiferroic magnetoelectric composites have attracted great interest due to some new expected physics and wide practical applications. However, the low resistivity restricts their further applications. In this work, multiferroic 0.8BaTiO 3 -0.2BaFe 12-x Mn x O 19 composite ceramics were prepared by microwave-hydrothermal and microwave-sintering methods. It was found that the dielectric constant of the composites increased with increasing x, while the resistivity increased gradually. Accordingly, the dielectric loss dropped as expected and the P-E loops showed slimmer shapes after introducing of Mn ions. In addition, the magnetic hysteresis loops of the composite ceramics prepared showed an excellent ferromagnetic behavior. In summary, smaller leakage current and slim P-E loops were obtained through Mn ion doping in BaFe 12 O 19 and forming BaTiO 3 -BaFe 12Àx Mn x O 19 composite ceramics while maintaining their good ferromagnetic property successfully.

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Magnetoelectric coupling on multiferroic cobalt ferrite–barium titanate ceramic composites with different connectivity schemes

Cited by 100 publications

References 39 publications

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

Magnetic-field-induced dielectric behaviors and magneto-electrical coupling of multiferroic compounds containing cobalt ferrite/barium calcium titanate composite fibers

Enhanced resistivity impact on the magnetoelectric properties of diphase multiferroic BaTiO₃–BaFe_12−xMn_xO₁₉ composite ceramics

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Magnetoelectric coupling on multiferroic cobalt ferrite–barium titanate ceramic composites with different connectivity schemes

Cited by 100 publications

References 39 publications

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

A new (Ba, Ca) (Ti, Zr)O3 based multiferroic composite with large magnetoelectric effect

Magnetic-field-induced dielectric behaviors and magneto-electrical coupling of multiferroic compounds containing cobalt ferrite/barium calcium titanate composite fibers

Enhanced resistivity impact on the magnetoelectric properties of diphase multiferroic BaTiO3–BaFe12−xMnxO19 composite ceramics

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Enhanced resistivity impact on the magnetoelectric properties of diphase multiferroic BaTiO₃–BaFe_12−xMn_xO₁₉ composite ceramics