Enhancement of magnetoelectric properties of (1-x)Mn0.5Zn0.5Fe2O4-xBa0.85Sr0.15Ti0.9Hf0.1O3 composite ceramics

Gao, Rongli; Qin, Xiaofeng; Zhang, Qingmei; Xu, Zhi; Wang, Zhenhua; Fu, Chunlin; Chen, Gang; Deng, Xiaoling; Cai, Wei

doi:10.1016/j.jallcom.2019.05.013

Cited by 162 publications

(28 citation statements)

References 27 publications

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“…Obviously, all samples showed typical hysteresis loops, confirming the ferroelectric properties of the composites. The P-E curves are similar to the reported literature [25,27]. It can be found that both remnant polarization (P r ) and coercive field (E c ) for all the specimens increase as the maximum applied electric field increases, which is a normal behavior in almost all ferroelectric materials, and typically manifests as a region switching process.…”

Section: Ferroelectric Propertiessupporting

confidence: 85%

“…In order to achieve strong magnetoelectric coupling effect, it is necessary to improve the magnetic/ferroelectric properties under the action of an electric/magnetic field. It has been found that by adjusting the composition of the composite material, the magnetic/ferroelectric properties can be effectively adjusted to improve the magnetoelectric coupling coefficient [22][23][24][25][26][27][28]. Till now, several composite materials have been studied, including Co 0.5 Ni 0.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

Gao

et al. 2019

J. Phys. Commun.

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Magnetoelectric composites have attracted much attentions due to their excellent multiferroic properties at room temperature. In this paper, CoFe 2 O 4 -PbZr 0.52 Ti 0.48 O 3 (CFO-PZT) composite ceramics with different molar ratios (CFO/PZT=1:4, 1:5, 1:6 and 1:7) were prepared by conventional solid reaction method. Effects of molar ratio on the structure, dielectric, ferroelectric and magnetic properties were comparatively investigated. X-ray diffraction patterns confirmed biphase structures of the composites, which can be indexed as CFO and PZT, no other obvious phase can be found with the limitation of the XRD resolution. Scanning electron microscopy (SEM) images show that the surface of the prepared samples is not dense enough and many pores are formed, the mean grain size is about 200 nm. The same relaxation behavior was observed in the intermediate temperature range of PZT-CFO composite ceramics. At room temperature, the dielectric constant and dielectric loss of the specimen 1:4 are the highest. The leakage current of the sample 1:4 is the lowest while the sample 1:6 has the largest value. As the CFO content in the composite decreases, both the saturation (Ms) and the remnant (Mr) magnetization decrease. Among them, the sample 1:4 presents better ferroelectric and magnetic properties, the remnant polarization is 1.13 μC cm −2 , the saturation magnetization and remnant magnetization are 11.01 and 3.28 emu g −1 , respectively. The sample 1:6 has the largest coercive field (945.27 Oe) while the sample 1:7 show the smallest value (681.19 Oe). Interface interaction between CFO/PZT may be applied to explain this phenomenon.

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Section: Ferroelectric Propertiessupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

Gao

et al. 2019

J. Phys. Commun.

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“…As the temperature increases, the probability of electron transition between Fe 3+ and Fe 2+ increases. Besides, as the temperature increases, more and more electrons are excited from the valence band to the conducting band, and these electrons can move back under the action of the electric field, which is equivalent to increasing polarization, so the dielectric constant is enhanced [32]. The peak height decreases with the increase of frequency, while the peak position shifts to the high-temperature region.…”

Section: Resultsmentioning

confidence: 99%

Effect of sintering temperature on magnetoelectric properties of PbTiO₃/NiFe₂O₄ composite ceramics

Zeng

Zhou

et al. 2020

Journal of Asian Ceramic Societies

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Magnetoelectric composites have attracted much attention due to their strong magnetoelectric coupling effect. In this paper, PbTiO 3-NiFe 2 O 4 (PTO/NFO) composite ceramics were prepared by sol-gel method. Effect of sintering temperatures on the structure, dielectric properties and multiferroic properties were studied. XRD results show that PTO/NFO ceramics have been successfully prepared. When the sintering temperature is 1050 °C, the secondary phase PbO 2 exists in the ceramics. SEM results show that there were two kinds of grains with different sizes. EDS analysis suggested that the large particles are NFO and the small particles are PTO. The sintering temperature has a great influence on the dielectric and ferroelectric properties of the prepared ceramics. When the sintering temperature is 950 °C, the ceramics show the maximum dielectric constant at low frequency. When the sintering temperature is 1150 °C, the maximum residual polarization is 1.236 μC/cm 2. The conductive mechanism of ceramics is dominated by Space Charge-Limited Conduction. The remanent magnetization and coercive field decrease with increasing the sintering temperature. The magnetoelectric coupling coefficient shows that ceramics have strong magnetoelectric coupling performance (5.7 V/cm•Oe).

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“…19 To solve these problems, some researchers have optimized the properties of composites by adjusting the composition, 20 changing the preparation process, 21 designing different structures, 22 adding combustion aids, 23 etc.On the basis of previous studies, it is known that adding combustion aids can address the mismatch phenomenon during ceramic cofiring, reduce the sintering temperature, and increase the density. [24][25][26] Although it is possible to adjust the properties of composite ceramics by adding sintering aids, the grain size, density, etc. will then also change.…”

Section: Introductionmentioning

confidence: 99%

“…30,31 Addition of Al 2 O 3 can reduce the sintering temperature of ceramic, and alleviate the ceramic cofiring mismatch issue. Addition of a small amount of Al 2 O 3 can result in the formation of a solid solution, thus facilitating sintering to a density close to theoretical, limiting crystal growth, and forming a microstructure with isometric crystals, 24 so it was chosen as the sintering aid. 32 In the work presented herein, NZFO/BST ceramics were prepared by the solid-phase method and their microstructure and magnetoelectric properties were studied for different Al 2 O 3 contents.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al2O3 Addition on Magnetoelectric Properties of Ni0.5Zn0.5Fe2O4/Ba0.8Sr0.2TiO3 Composite Ceramics

Qin

Zhou

et al. 2021

Journal of Elec Materi

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Magnetoelectric composites have attracted widespread attention during the past few decades due to their strong magnetoelectric coupling effect and potential applications above room temperature. Ni 0.5 Zn 0.5 Fe 2 O 4 /Ba 0.8 Sr 0.2-TiO 3 composites have been prepared by the conventional high-temperature solid-state method and the effects of Al 2 O 3 addition on their microstructure, dielectric, ferroelectric, and magnetic properties studied. x-Ray diffraction (XRD) analysis confirmed the biphase structure of the composites. scanning electron microscopy (SEM) showed that addition of a certain amount of Al 2 O 3 can enhance the density and promote uniform growth of particle size. The sample with 1 wt.% Al 2 O 3 addition exhibited the largest dielectric constant and lowest dielectric loss (< 0.05 at 1 kHz) at high temperature (> 354°C). The sample with 3 wt.% Al 2 O 3 addition presented the best ferroelectric properties, with the highest values of residual polarization (P r = 2.2150 lC/ cm 2 ) and coercive field (E c = 30.6527 kV/cm) among the specimens. The remanent magnetization (M r ) and saturated magnetization (M s ) decreased with increasing Al 2 O 3 content. In short, addition of Al 2 O 3 caused changes in the grain size, density, and defects, and addition of a certain amount of Al 2 O 3 can improve the magnetoelectric properties.

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Enhancement of magnetoelectric properties of (1-x)Mn0.5Zn0.5Fe2O4-xBa0.85Sr0.15Ti0.9Hf0.1O3 composite ceramics

Cited by 162 publications

References 27 publications

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

Effect of sintering temperature on magnetoelectric properties of PbTiO₃/NiFe₂O₄ composite ceramics

Effect of Al2O3 Addition on Magnetoelectric Properties of Ni0.5Zn0.5Fe2O4/Ba0.8Sr0.2TiO3 Composite Ceramics

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Enhancement of magnetoelectric properties of (1-x)Mn0.5Zn0.5Fe2O4-xBa0.85Sr0.15Ti0.9Hf0.1O3 composite ceramics

Cited by 162 publications

References 27 publications

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe2O4/PbZr0.52Ti0.48O3 multiferroic composite with different molar ratios

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe2O4/PbZr0.52Ti0.48O3 multiferroic composite with different molar ratios

Effect of sintering temperature on magnetoelectric properties of PbTiO3/NiFe2O4 composite ceramics

Effect of Al2O3 Addition on Magnetoelectric Properties of Ni0.5Zn0.5Fe2O4/Ba0.8Sr0.2TiO3 Composite Ceramics

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A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

A comparative study on the structural, dielectric, ferroelectric and magnetic properties of CoFe₂O₄/PbZr_0.52Ti_0.48O₃ multiferroic composite with different molar ratios

Effect of sintering temperature on magnetoelectric properties of PbTiO₃/NiFe₂O₄ composite ceramics