Effect of sintering temperature on magnetoelectric coupling in 0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 composite ceramics

Magnetoelectric composites have attracted much attention due to their intriguing physical properties and potential applications. They might have strong magnetoelectric coupling effect above room temperature, but it mainly depends on the sintering schedule. In this paper, 0.2Ni0.9Zn0.1Fe2O4-0.8Ba0.9Sr0.1TiO3 (NZFO-BSTO) composite ceramics were prepared by conventional solid sintering method. Effects of the sintering temperature (1050, 1100, 1150 and 1200?C) on the microstructure, dielectric and multiferroic properties were investigated in detail. XRD results confirm that the prepared ceramics show bi-phase structure, which can be indexed as NZFO and BSTO. No obvious impurity phase was observed when the sintering temperature is less than 1200?C, indicating that there is no apparent chemical reaction occuring at the magnetic and ferroelectric interface. All of the samples show relatively dense and uniform structure. The mean grain size of the composites increases from 220 to 650 nm when the sintering temperature increases from 1050?C to 1200?C. The sample ST-1100 has the best frequency stability of dielectric constant, while it presents the smallest dielectric loss. All specimens present two dielectric peaks, the first one is attributed to the diffuse phase transition of BSTO, while another one generated at higher temperature corresponds to the relaxation polarization. The sample ST-1100 shows excellent ferroelectric properties, the value of remnant polarization is about 5.1 ?C/cm2 and the coercive electric field value is ~20 kV/cm. The ceramics ST-1050 and ST-1200 show larger leakage current. All samples show paramagnetic behaviour with small remnant magnetization (~0.3 emu/g) and coercive magnetic field (~30Oe). The sample ST-1100 has maximum magnetoelectric coupling coefficient of 9.6mV/cm?Oe when the magnetic field is near 1100Oe.

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Novel Magnetic Field Modulation Concept Using Multiferroic Heterostructure for Magnetoresistive Sensors

Sensors ◽

10.3390/s20051440 ◽

2020 ◽

Vol 20 (5) ◽

pp. 1440

Author(s):

Long Pan ◽

Mengchun Pan ◽

Jiafei Hu ◽

Yueguo Hu ◽

Yulu Che ◽

...

Keyword(s):

Magnetic Field ◽

Coupling Effect ◽

Design Method ◽

Low Frequency ◽

Magnetoelectric Coupling ◽

Domain Model ◽

Frequency Noise ◽

Magnetic Field Modulation ◽

Field Modulation ◽

Multiferroic Heterostructure

The low frequency magnetic field detection ability of magnetoresistive (MR)sensor is seriously affected by 1/f noise. At present, the method to suppress the influence of low frequency noise is mainly to modulate the measured magnetic field by mechanical resonance. In this paper, a novel modulation concept employing a magnetoelectric coupling effect is proposed. A design method of modulation structure based on an equivalent magnetic circuit model (EMCM) and a single domain model of in-plane moment was established. An EMCM was established to examine the relationship between the permeability of flux modulation film (FMF) and modulation efficiency, which was further verified through a finite element simulation model (FESM). Then, the permeability modulated by the voltage of a ferroelectric/ferromagnetic (FE/FM) multiferroic heterostructure was theoretically studied. Combining these studies, the modulation structure and the material were further optimized, and a FeSiBPC/PMN-PT sample was prepared. Experimental results show that the actual magnetic susceptibility modulation ability of FeSiBPC/PMN-PT reached 150 times, and is in good agreement with the theoretical prediction. A theoretical modulation efficiency higher than 73% driven by a voltage of 10 V in FeSiBPC/PMN-PT can be obtained. These studies show a new concept for magnetoelectric coupling application, and establish a new method for magnetic field modulation with a multiferroic heterostructure.

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Dynamic behavior of magnetoelectric coupling of CuFeO2 induced by a high magnetic field

Journal of Applied Physics ◽

10.1063/1.4868578 ◽

2014 ◽

Vol 115 (11) ◽

pp. 114107 ◽

Cited By ~ 7

Author(s):

Nianming Xia ◽

Liran Shi ◽

Zhengcai Xia ◽

Borong Chen ◽

Zhao Jin ◽

...

Keyword(s):

Magnetic Field ◽

Dynamic Behavior ◽

High Magnetic Field ◽

Magnetoelectric Coupling

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All organic multiferroic magnetoelectric complexes with strong interfacial spin-dipole interaction

npj Flexible Electronics ◽

10.1038/s41528-021-00120-0 ◽

2021 ◽

Vol 5 (1) ◽

Author(s):

Yuying Yang ◽

Zhiyan Chen ◽

Xiangqian Lu ◽

Xiaotao Hao ◽

Wei Qin

Keyword(s):

Magnetic Field ◽

Light Intensity ◽

Room Temperature ◽

Incident Light ◽

Dipole Interaction ◽

Interfacial Interaction ◽

Magnetoelectric Coupling ◽

Incident Light Intensity ◽

Organic Ferromagnets ◽

Magnetoelectric Coefficient

AbstractThe organic magnetoelectric complexes are beneficial for the development on flexible magnetoelectric devices in the future. In this work, we fabricated all organic multiferroic ferromagnetic/ferroelectric complexes to study magnetoelectric coupling at room temperature. Under the stimulus of external magnetic field, the localization of charge inside organic ferromagnets will be enhanced to affect spin–dipole interaction at organic multiferroic interfaces, where overall ferroelectric polarization is tuned to present an organic magnetoelectric coupling. Moreover, the magnetoelectric coupling of the organic ferromagnetic/ferroelectric complex is tightly dependent on incident light intensity. Decreasing light intensity, the dominated interfacial interaction will switch from spin–dipole to dipole–dipole interaction, which leads to the magnetoelectric coefficient changing from positive to negative in organic multiferroic magnetoelectric complexes.

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Structure, Luminescence, and Magnetic Properties of Crystalline Manganese Tungstate Doped with Rare Earth Ion

Materials ◽

10.3390/ma14133717 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3717

Author(s):

Jae-Young Jung ◽

Soung-Soo Yi ◽

Dong-Hyun Hwang ◽

Chang-Sik Son

Keyword(s):

Magnetic Field ◽

Rare Earth ◽

Sintering Temperature ◽

Luminescent Properties ◽

Concentration Quenching ◽

Rare Earth Ions ◽

Precipitation Method ◽

Rare Earth Ion ◽

Co Precipitation ◽

Quenching Phenomenon

The precursor prepared by co-precipitation method was sintered at various temperatures to synthesize crystalline manganese tungstate (MnWO4). Sintered MnWO4 showed the best crystallinity at a sintering temperature of 800 °C. Rare earth ion (Dysprosium; Dy3+) was added when preparing the precursor to enhance the magnetic and luminescent properties of crystalline MnWO4 based on these sintering temperature conditions. As the amount of rare earth ions was changed, the magnetic and luminescent characteristics were enhanced; however, after 0.1 mol.%, the luminescent characteristics decreased due to the concentration quenching phenomenon. In addition, a composite was prepared by mixing MnWO4 powder, with enhanced magnetism and luminescence properties due to the addition of dysprosium, with epoxy. To one of the two prepared composites a magnetic field was applied to induce alignment of the MnWO4 particles. Aligned particles showed stronger luminescence than the composite sample prepared with unsorted particles. As a result of this, it was suggested that it can be used as phosphor and a photosensitizer by utilizing the magnetic and luminescent properties of the synthesized MnWO4 powder with the addition of rare earth ions.

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Giant Magnetoelectric Coupling and Magnetic-Field-Induced Permanent Switching in a Spin Crossover Mn(III) Complex

Inorganic Chemistry ◽

10.1021/acs.inorgchem.0c02789 ◽

2020 ◽

Author(s):

Vibe B. Jakobsen ◽

Shalinee Chikara ◽

Jie-Xiang Yu ◽

Emiel Dobbelaar ◽

Conor T. Kelly ◽

...

Keyword(s):

Magnetic Field ◽

Spin Crossover ◽

Magnetoelectric Coupling

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In-plane anisotropic converse magnetoelectric coupling effect in FeGa/polyvinylidene fluoride heterostructure films

Journal of Applied Physics ◽

10.1063/1.4793780 ◽

2013 ◽

Vol 113 (17) ◽

pp. 17C705 ◽

Cited By ~ 15

Author(s):

Zhenghu Zuo ◽

Qingfeng Zhan ◽

Guohong Dai ◽

Bin Chen ◽

Xiaoshan Zhang ◽

...

Keyword(s):

Polyvinylidene Fluoride ◽

Coupling Effect ◽

Magnetoelectric Coupling ◽

Magnetoelectric Coupling Effect

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Impact of sintering temperature on structural, optical and ferroelectric properties of V-doped ZnO

Materials Research Express ◽

10.1088/2053-1591/2/4/045901 ◽

2015 ◽

Vol 2 (4) ◽

pp. 045901 ◽

Cited By ~ 3

Author(s):

Parmod Kumar ◽

Rahul Joshi ◽

Anurag Gaur ◽

Lalit Kumar ◽

K Asokan

Keyword(s):

Sintering Temperature ◽

Ferroelectric Properties ◽

Doped Zno

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Cluster Size Dependent Linear Magnetoelectric Coupling Effect in Na 0.5 Bi 0.5 TiO 3 /FeCo Composites

physica status solidi (RRL) - Rapid Research Letters ◽

10.1002/pssr.202100389 ◽

2021 ◽

Author(s):

Fei Li ◽

Yulong Bai ◽

Shifeng Zhao

Keyword(s):

Cluster Size ◽

Coupling Effect ◽

Magnetoelectric Coupling ◽

Size Dependent ◽

Magnetoelectric Coupling Effect

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Effects of MgO and Y2O3 on the Microstructure and Mechanical Properties of Al2O3 Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.589-590.572 ◽

2013 ◽

Vol 589-590 ◽

pp. 572-577 ◽

Cited By ~ 2

Author(s):

Hua He Liu ◽

Han Lian Liu ◽

Chuan Zhen Huang ◽

Bin Zou ◽

Ya Cong Chai

Keyword(s):

Mechanical Properties ◽

Sintering Temperature ◽

Hot Press ◽

Composite Ceramics ◽

Microstructure And Mechanical Properties ◽

Suitable Amount ◽

Hot Press Sintering ◽

Grains Refinement ◽

Better Than

Al2O3-MgO, Al2O3-Y2O3 and Al2O3-MgO-Y2O3 composite ceramics were fabricated respectively by hot-press sintering technique. With the analysis of the mechanical properties and microstructure, it was found that single additive MgO could be more favorable to the grains’ refinement and densification than Y2O3; the composite additive including both MgO and Y2O3 was better than single additive MgO or Y2O3, because their interactions could improve the mechanical properties of the Al2O3 ceramics; The sintering temperature could be reduced by adding the suitable amount of composite additives.

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Preparation of ZrO2 Composite Ceramics with High Thermal Shock Resistance

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.455-456.650 ◽

2012 ◽

Vol 455-456 ◽

pp. 650-654 ◽

Cited By ~ 1

Author(s):

He Yi Ge ◽

Jian Ye Liu ◽

Xian Qin Hou ◽

Dong Zhi Wang

Keyword(s):

Mechanical Properties ◽

Water Absorption ◽

Thermal Shock ◽

Thermal Shock Resistance ◽

Sintering Temperature ◽

Fiber Composite ◽

Physical And Mechanical Properties ◽

Composite Ceramics ◽

Shock Resistance ◽

Absorption Measurements

The physical and mechanical properties of nanometer ZrO2-ZrO2fiber composite ceramics were studied by introduction of ZrO2fiber. ZrO2composite ceramics at different sintering temperature was investigated by porosity and water absorption measurements, flexual strength and thermal shock resistance analysis. Results showed that ZrO2composite ceramics containing 15 wt% ZrO2fiber with sintering temperature of 1650°C exhibited good mechanical properties and thermal shock resistance. The porosity and the water absorption were 8.84% and 1.62%, respectively. The flexual strength was 975 MPa and the thermal shock times reached 31 times. Scanning electron microscope (SEM) was used to analyze the microstructure of ZrO2composite ceramics.

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