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Modulation of magnetic properties and enhanced magnetoelectric effects in MnW_(1-x)Mo_xO_4 compounds
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作者 房勇 周卫平 +3 位作者 宋育全 吕丽娅 王敦辉 都有为 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第7期703-707,共5页
In this letter, we investigate the magnetic and ferroelectric properties of polycrystalline MnW1-xMoxO4 (x = 0, 0.05, 0.10, 0.20) compounds. The substitution of nonmagnetic Mo6+ ions for W6+ ions modifies the magn... In this letter, we investigate the magnetic and ferroelectric properties of polycrystalline MnW1-xMoxO4 (x = 0, 0.05, 0.10, 0.20) compounds. The substitution of nonmagnetic Mo6+ ions for W6+ ions modifies the magnetic transition tem- peratures of MnW1-xMoxO4 by changing the Mn-O-Mn bond. As a result, distinct ferroelectric properties and enhanced magnetoelectric effects are observed in Mo6+-doped MnWO4 compounds. The effects of substitution of Mo6+ ions on magnetic properties and magnetoelectric coupling are discussed. 展开更多
关键词 MAGNETISM FERROELECTRICITY magnetoelectric effects multiferroic properties
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Magnetoelectric effects in multiferroic laminated plates with imperfect interfaces 被引量:2
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作者 DJ. Kong C. Ruan-Wu +2 位作者 Y.X. Luo C.L. Zhang Ch. Zhang 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2017年第2期93-99,共7页
Two-dimensional (2D) equations for multiferroic (MF) laminated plates with imperfect interfaces are established in this paper. The interface between two adjacent sublayers, which are not perfectly bonded together,... Two-dimensional (2D) equations for multiferroic (MF) laminated plates with imperfect interfaces are established in this paper. The interface between two adjacent sublayers, which are not perfectly bonded together, is modeled as a general spring-type layer. The mechanical displacements, and the electric and magnetic potentials of the two adjacent layers are assumed to be discontinuous at the interface. As an example, the influences of imperfect interfaces on the magnetoelectric (ME) coupling effects in an MF sandwich plate are investigated with the established 2D governing equations. Numerical results show that the imperfect interfaces have a significant impact on the ME coupling effects in MF laminated structures. 展开更多
关键词 Multiferroic laminated plates Two-dimensional equations Imperfect interfaces magnetoelectric coupling effects
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Multiferroics and magnetoelectric effects in charge ordered compounds 被引量:1
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作者 SUN Young YAN LiQin CONG JunZhuang 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第1期222-231,共10页
The coexistence of magnetic ordering and ferroelectricity, ing on the origin of ferroelectricity, multiferroic materials known as multiferroics, has drawn a lot of research effort. Depend can be classified into differ... The coexistence of magnetic ordering and ferroelectricity, ing on the origin of ferroelectricity, multiferroic materials known as multiferroics, has drawn a lot of research effort. Depend can be classified into different groups. In this paper, we review re cent progress in the field of multiferroics induced by different forms of charge ordering. In addition to a general description of charge order and electronic ferroelectricity, we focus on two specific systems: (1) charge order with frustration in RFe2O4 (R=Lu, Yb) system; (2) charge ordered perovskite manganites of the type (R1-xCax)MnO3 (R=La, Pr). The charge ordering can be tuned by external electric fields, which results in pronounced magnetoelectric effects and strong dielectric tunability. Other materials and possible candidates with charge order induced multiferroics are also briefly summarized. 展开更多
关键词 MULTIFERROICS charge order magnetoelectric effects
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Interface/surface magnetoelectric effects: New routes to the electric field control of magnetism 被引量:5
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作者 段纯刚 《Frontiers of physics》 SCIE CSCD 2012年第4期375-379,共5页
In this perspective paper, we discuss possible ways to control magnetism using electric-field. Special focus is given to interface/surface magnetoelectric effects, which will become important when the thickness of mag... In this perspective paper, we discuss possible ways to control magnetism using electric-field. Special focus is given to interface/surface magnetoelectric effects, which will become important when the thickness of magnetic films drops to nanoscale. We show that significantly different mechanisms may lead to interface/surface magnetoelectric effects, providing great flexibility to apply such effects. As a result, we propose several protype devices utilizing these novel magnetoelectric effects, and strongly advocate experimental endeavors to realize such devices. 展开更多
关键词 magnetoelectric effect MULTIFERROIC electric-field controlled magnetism
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EFFECTS OF LINEAR ELECTROMAGNETIC STIRRING ON THE SOLIDIFICATION STRUCTURE OF BILLET 被引量:5
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作者 H.L. Zhang, E.G. Wang, G.L. Jia and J.C. He (Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2001年第3期227-234,共8页
The effects of linear electromagnetic stirring (EMS) on the solidification structure of billet were investigated by experiments, and the electromagnetic field and the flow field during the stirring process were analyz... The effects of linear electromagnetic stirring (EMS) on the solidification structure of billet were investigated by experiments, and the electromagnetic field and the flow field during the stirring process were analyzed by numerical simulation. The results show that the billet of almost 100% equiaxed grains can be obtained by applying linear EMS at the maximum intensity of 1414 A&middotHz1/2, while the maximum electromagnetic force and the maximum velocity in the molten steel are 6386 N&middotm-3 and 0.22 m&middots-1 respectively. It is shown that in the pulsating electromagnetic force which is perpendicular to the movement of the molten steel is an important factor of increasing the equiaxed zone ration in the solidification structure, which further prevents the appearance of white band and internal defects. 展开更多
关键词 Computer simulation Grain growth magnetoelectric effects MIXING SOLIDIFICATION
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Martensitic transformation and related magnetic effects in Ni-Mn-based ferromagnetic shape memory alloys 被引量:1
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作者 王敦辉 韩志达 +4 位作者 轩海成 马胜灿 陈水源 张成亮 都有为 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第7期1-10,共10页
Ferromagnetic shape memory alloys, which undergo the martensitic transformation, are famous multifunctional materials. They exhibit many interesting magnetic properties around the martensitic transformation temperatur... Ferromagnetic shape memory alloys, which undergo the martensitic transformation, are famous multifunctional materials. They exhibit many interesting magnetic properties around the martensitic transformation temperature due to the strong coupling between magnetism and structure. Tuning magnetic phase transition and optimizing the magnetic effects in these alloys are of great importance. In this paper, the regulation of martensitic transformation and the investigation of some related magnetic effects in Ni–Mn-based alloys are reviewed based on our recent research results. 展开更多
关键词 magnetocaloric effect magnetoresistance effect exchange bias magnetoelectric effect
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Insights into the regulation mechanism of ring-shaped magnetoelectric energy harvesters via mechanical and magnetic conditions 被引量:1
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作者 Yang Shi Ni Li Yong Yang 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第10期565-576,共12页
This paper presents a theoretical model for predicting and tuning magnetoelectric(ME)effect of ring-shaped composites,in which stress boundary conditions are empoyed and the multi-field coupling property of giant magn... This paper presents a theoretical model for predicting and tuning magnetoelectric(ME)effect of ring-shaped composites,in which stress boundary conditions are empoyed and the multi-field coupling property of giant magnetostrictive materials are taken into account.A linear analytical solutions for the closed-and open-circuit ME voltages are derived simultaneously using mechanical differential equations,interface and boundary conditions,and electrical equations.For nonlinear ME coupling effect,the nonlinear multi-field coupling constitutive equation is reduced to an equivalent form by expanding the strains as a Taylor series in the vicinity of bias magnetic field.Sequentially,the linear model is generalized to a nonlinear one involving the field-dependent material parameters.The results show that setting a stress-free condition is beneficial for reducing resonance frequency while applying clamped conditions on the inner and outer boundaries may improve the maximum output power density.In addition,performing stress conditions on one of the boundaries may enhance ME coupling significantly,without changing the corresponding resonance frequency and optimal resistance.When external stimuli like bias magnetic field and pre-stress are applied to the ring-shaped composites,a novel dual peak phenomenon in the ME voltage curve around resonance frequencies is revealed theoretically,indicating that strong ME coupling may be achieved within a wider bias field region.Eventually,the mutual coordination of the bias field and pre-stress may enhance ME coupling as well as tuning the resonance frequency,and thus is pivotal for tunable control of ME energy harvesters.The proposed model can be applied to design high-performance energy harvesters by manipulating the mechanical conditions and external stimuli. 展开更多
关键词 magnetoelectric effect boundary conditions magneto-elastic coupling external stimuli
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Frequency dependence of the magnetoelectric effect in a magnetostrictive-piezoelectric heterostructure 被引量:1
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作者 郁国良 李元勋 +4 位作者 曾玉琴 李颉 左林 李强 张怀武 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第7期507-510,共4页
The frequency dependence of the magnetoelectric effect in a magnetostrictive-piezoelectric heterostructure is theoretically studied by solving combined magnetic, elastic, and electric equations with boundary condition... The frequency dependence of the magnetoelectric effect in a magnetostrictive-piezoelectric heterostructure is theoretically studied by solving combined magnetic, elastic, and electric equations with boundary conditions. Both the mechanical coupling coefficient and the losses of the magnetostrictive and piezoelectric phases are taken into account. The numerical result indicates that the magnetoelectric coefficient and the resonance frequency are determined by the mechanical coupling coefficient, losses, and geometric parameters. Moreover, at the electromechanical resonance frequency, the module of the magnetoelectric coefficient is mostly contributed by the imaginary part. The relationship between the real and the imaginary parts of the magnetoelectric coefficient fit well to the Cole–Cole circle. The magnetostrictive-piezoelectric heterostructure has a great potential application as miniature and no-secondary coil solid-state transformers. 展开更多
关键词 magnetoelectric effect magnetostrictive-piezoelectric heterostructure electromechanical resonance
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Frequency-dependent magnetoelectricity of CoFe_2O_4-BaTiO_3 particulate composites
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作者 Atchara KHAMKONGKAEO Pongsakorn JANTARATANA +2 位作者 Chitnarong SIRISATHITKUL Teerapon YAMWONG Santi MAENSIRI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第11期2438-2442,共5页
CoFe2O4-BaTiO3 particulate composites were prepared by wet ball milling method,their magnetoelectric(ME) effect was studied as a function of their constituents and modulation frequency.The results show that the ME c... CoFe2O4-BaTiO3 particulate composites were prepared by wet ball milling method,their magnetoelectric(ME) effect was studied as a function of their constituents and modulation frequency.The results show that the ME coefficient increases as a function of modulation frequency from 400 to 1000 Hz and the ME characteristics of ME curves are also modified because the electrical conductivity of the CoFe2O4 phase is sensitive to the increase in frequency between 400 and 1 000 Hz.The third phase Ba2Fe2O5 formed during the sintering tends to reduce the ME effect. 展开更多
关键词 FERRITE FERROELECTRIC CoFe2O4-BaTiO3 magnetoelectric effect modulation frequency
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Magnetoelectric effect in multiferroic NdMn2O5
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作者 Syed Hamad Bukhari Javed Ahmad 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第1期526-529,共4页
We have measured the dielectric constant for NdMn2O5 in an external magnetic field to map out the magnetoelectric phase diagram. The phase diagram corresponds well with the previously reported data of neutron diffract... We have measured the dielectric constant for NdMn2O5 in an external magnetic field to map out the magnetoelectric phase diagram. The phase diagram corresponds well with the previously reported data of neutron diffraction and magnetic susceptibility. Our main finding is the observation of a dielectric anomaly in the low temperature phase with a strong magnetoelectric effect, which is attributed to the independent Nd^3+ ordering. Moreover, the absence of the dielectric anomaly in the paramagnetic phase is discussed, keeping in view the exchange interaction and its dependence on the rareearth R^3+ ionic radius. 展开更多
关键词 sol–gel synthesis dielectric constant magnetoelectric effect phase transition
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Lumped-equivalent circuit model for multi-stage cascaded magnetoelectric dual-tunable bandpass filter
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作者 张秋实 朱锋杰 周浩淼 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第10期481-490,共10页
A lumped-equivalent circuit model of a novel magnetoelectric tunable bandpass filter, which is realized in the form of multi-stage cascading between a plurality of magnetoelectric laminates, is established in this pap... A lumped-equivalent circuit model of a novel magnetoelectric tunable bandpass filter, which is realized in the form of multi-stage cascading between a plurality of magnetoelectric laminates, is established in this paper for convenient analysis.The multi-stage cascaded filter is degraded to the coupling microstrip filter with only one magnetoelectric laminate and then compared with the existing experiment results. The comparison reveals that the insertion loss curves predicted by the degraded circuit model are in good agreement with the experiment results and the predicted results of the electromagnetic field simulation, thus the validity of the model is verified. The model is then degraded to the two-stage cascaded magnetoelectric filter with two magnetoelectric laminates. It is revealed that if the applied external bias magnetic or electric fields on the two magnetoelectric laminates are identical, then the passband of the filter will drift under the changed external field; that is to say, the filter has the characteristics of external magnetic field tunability and electric field tunability. If the applied external bias magnetic or electric fields on two magnetoelectric laminates are different, then the passband will disappear so that the switching characteristic is achieved. When the same magnetic fields are applied to the laminates, the passband bandwidth of the two-stage cascaded magnetoelectric filter with two magnetoelectric laminates becomes nearly doubled in comparison with the passband filter which contains only one magnetoelectric laminate. The bandpass effect is also improved obviously. This research will provide a theoretical basis for the design, preparation, and application of a new high performance magnetoelectric tunable microwave device. 展开更多
关键词 microwave magnetoelectric effect lumped-equivalent circuit magnetoelectric tunable microwave device multi-stage cascaded filter
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Magnetoelectric memory effect in the Y-type hexaferrite BaSrZnMgFe_(12)O_(22)
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作者 王芬 申世鹏 孙阳 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第8期379-383,共5页
We report on the magnetic and magnetoelectric properties of the Y-type hexaferrite BaSrZnMgFe12O22,which undergoes transitions from a collinear ferrimagnetic phase to a proper screw phase at 310 K and to a longitudina... We report on the magnetic and magnetoelectric properties of the Y-type hexaferrite BaSrZnMgFe12O22,which undergoes transitions from a collinear ferrimagnetic phase to a proper screw phase at 310 K and to a longitudinal conical phase at 45 K.Magnetic and electric measurements revealed that the magnetic structure with spiral spin order can be modified by applying a magnetic field,resulting in magnetically controllable electric polarization.It was observed that BaSrZnMgFe12O22 exhibits an anomalous magnetoelectric memory effect:the ferroelectric state can be partially recovered from the paraelectric phase with collinear spin structure by reducing magnetic field at 20 K.We ascribe this memory effect to the pinning of multiferroic domain walls,where spin chirality and structure are preserved even in the nonpolar collinear spin state. 展开更多
关键词 MULTIFERROIC magnetoelectric effect memory effect
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Self-biased magnetoelectric responses in magnetostrictive/piezoelectric composites with different high-permeability alloys
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作者 鲁彩江 李平 +5 位作者 文玉梅 杨爱超 杨超 王德才 何伟 张吉涛 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第11期527-531,共5页
We comparatively investigate the influence of various high-permeability alloys on the hysteretic and remanent res- onant magnetoelectric (ME) response in a composite of magnetostrictive nickel (Ni) and piezoelectr... We comparatively investigate the influence of various high-permeability alloys on the hysteretic and remanent res- onant magnetoelectric (ME) response in a composite of magnetostrictive nickel (Ni) and piezoelectric Pb(Zrl_x, Tix)O3 (PZT). In order to implement this comparative research, Co-based amorphous alloy (CoSiB), Fe-based nanocrystalline alloy (FeCuNbSiB) and Fe-based amorphous alloy (FeSiB) are used according to different magnetostriction (2s) and saturation magnetization (μtoMs) characteristics. The bending and longitudinal resonant ME voltage coefficients (αME,b and αME,1) are observed comparatively for CoSiB/Ni/PZT, FeCuNbSiB/Ni/PZT, and FeSiB/Ni/PZT composites. The experimental data indicate that the FeSiB/Ni/PZT composite has the largest remanent self-biased aME,b and aME,1 due to the largest magnetic grading of λs and μ0Ms in the FeSiB/Ni layer. When the number of FeSiB foils is four, the maximum remanent aME,b and aME,I at zero bias magnetic field are 57.8 V/cm·Oe and 107.6 V/cm·Oe, respectively. It is recommended that the high-permeability alloy is supposed to have larger λs and μ0Ms for obtaining a larger remanent self-biased ME responses in ME composite with high-permeability alloy. 展开更多
关键词 magnetoelectric effect composite materials high-permeability alloy
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Tunable characteristics of bending resonance frequency in magnetoelectric laminated composites
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作者 陈蕾 李平 +1 位作者 文玉梅 朱永 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第7期511-515,共5页
As the magnetoelectric (ME) effect in piezoelectric/magnetostrictive laminated composites is mediated by mechanical deformation, the ME effect is significantly enhanced in the vicinity of resonance frequency. The be... As the magnetoelectric (ME) effect in piezoelectric/magnetostrictive laminated composites is mediated by mechanical deformation, the ME effect is significantly enhanced in the vicinity of resonance frequency. The bending resonance frequency (fr) of bilayered Terfenol-D/PZT (MP) laminated composites is studied, and our analysis predicts that (i) the bending resonance frequency of an MP laminated composite can be tuned by an applied dc magnetic bias (Hdc) due to the E effect; (ii) the bending resonance frequency of the MP laminated composite can be controlled by incorporating FeCuNbSiB layers with different thicknesses. The experimental results show that with H dc increasing from 0 Oe (1 Oe=79.5775 A/m) to 700 Oe, the bending resonance frequency can be shifted in a range of 32.68 kHz≤fr≤33.96 kHz. In addition, with the thickness of the FeCuNbSiB layer increasing from 0 μm to 90 μm, the bending resonance frequency of the MP laminated composite gradually increases from 33.66 kHz to 39.18 kHz. This study offers a method of adjusting the strength of dc magnetic bias or the thicknesses of the FeCuNbSiB layer to tune the bending resonance frequency for ME composite, which plays a guiding role in the ME composite design for real applications. 展开更多
关键词 magnetoelectric effect bending resonance frequency composite materials
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Ferromagnetic resonance frequency shift model of laminated magnetoelectric structure tuned by electric field
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作者 周浩淼 陈晴 邓娟湖 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第4期567-571,共5页
Based on Smith-Beljers theory and classical laminate theory, an explicit model is proposed for the ferromagnetic resonance (FMR) frequency shift of a stress-mediumed laminated magnetoelectric structure tuned by an e... Based on Smith-Beljers theory and classical laminate theory, an explicit model is proposed for the ferromagnetic resonance (FMR) frequency shift of a stress-mediumed laminated magnetoelectric structure tuned by an electric field. This model can effectively predict the experimental phenomenon that the FMR frequency increases under a parallel magnetic field and decreases under a perpendicular magnetic field when the electric field ranges from - 10 kV/m to 10 kV/m. Besides, this theory further shows that the FMR frequency increases monotonically as the angle between the direction of the external magnetic field and the outside normal direction of the laminated structure increases, and the frequency will increase as great as 7 GHz. In addition, when the angle reaches a certain critical value, the external electric field fails to tune the FMR frequency. When the angle is above the critical value, the increase of the electric field induces the FMR frequency to increase, and the opposite scenario happens when it is below the critical value. When the angle is 90~ (parallel magnetic field), the FMR frequency is the most sensitive to the change of the electric field. 展开更多
关键词 ferromagnetic resonance (FMR) piezoelectric/ferrite laminates converse magnetoelectric effect microwave devices
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Giant low-frequency magnetoelectric torque (MET) effect in polyvinylidene-fluoride (PVDF)-based MET device
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作者 郑春蕾 刘宜伟 +2 位作者 詹清峰 巫远招 李润伟 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第6期406-410,共5页
A polyvinylidene-fluoride(PVDF)-based magnetoelectric torque(MET) device is designed with elastic layer sandwiched by PVDF layers, and low-frequency MET effect is carefully studied. It is found that elastic modulu... A polyvinylidene-fluoride(PVDF)-based magnetoelectric torque(MET) device is designed with elastic layer sandwiched by PVDF layers, and low-frequency MET effect is carefully studied. It is found that elastic modulus and thickness of the elastic layer have great influences on magnetoelectric(ME) voltage coefficient(α(ME)) and working range of frequency in PVDF-based MET device. The decrease of the modulus and thickness can help increase the α ME. However,it can also reduce the working range in the low frequency. By optimizing the parameters, the giant α(ME) of 320 V/cm·Oe(1 Oe = 79.5775 A·m^-1 at low frequency(1 Hz) can be obtained. The present results may help design PVDF-based MET low-frequency magnetic sensor with improved magnetic sensitivity in a relative large frequency range. 展开更多
关键词 magnetoelectric torque effect piezoelectric ME voltage coefficient
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Magnetoelectric coupling effect of polarization regulation in BiFeO_(3)/LaTiO_(3)heterostructures
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作者 Chao Jin Feng-Zhu Ren +3 位作者 Wei Sun Jing-Yu Li Bing Wang Qin-Fen Gu 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第7期387-393,共7页
An effective regulation of the magnetism and interface of ferromagnetic materials is not only of great scientific significance,but also has an urgent need in modern industry.In this work,by using the first-principles ... An effective regulation of the magnetism and interface of ferromagnetic materials is not only of great scientific significance,but also has an urgent need in modern industry.In this work,by using the first-principles calculations,we demonstrate an effective approach to achieve non-volatile electrical control of ferromagnets,which proves this idea in multiferroic heterostructures of ferromagnetic La TiO_(3)and ferroelectric Bi FeO_(3).The results show that the magnetic properties and two-dimensional electron gas concentrations of La TiO_(3)films can be controlled by changing the polarization directions of Bi FeO_(3).The destroyed symmetry being introduced by ferroelectric polarization of the system leads to the transfer and reconstruction of the Ti-3 d electrons,which is the fundamental reason for the changing of magnetic properties.This multiferroic heterostructures will pave the way for non-volatile electrical control of ferromagnets and have potential applications. 展开更多
关键词 first-principles calculations BiFeO_(3)/LaTiO_(3)heterostructures magnetoelectric coupling effect polarization regulation
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Large tunable FMR frequency shift by magnetoelectric coupling in oblique-sputtered Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure
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作者 时志鹏 刘晓敏 李山东 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期445-448,共4页
In this study, we observe a strong inverse magnetoelectric coupling in Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure, which produces large electric field(E-field) tunability of microwave magnetic properties.... In this study, we observe a strong inverse magnetoelectric coupling in Fe52.5Co22.5B25.0/PZN-PT multiferroic heterostructure, which produces large electric field(E-field) tunability of microwave magnetic properties. With the increase of the E-field from 0 to 8 kV/cm, the magnetic anisotropy field Heffis dramatically enhanced from 169 to 600 Oe, which further leads to a significant enhancement of ferromagnetic resonance frequency from 4.57 to 8.73 GHz under zero bias magnetic field, and a simultaneous decrease of the damping constant α from 0.021 to 0.0186. These features demonstrate that this multiferroic composite is a promising candidate for fabricating E-field tunable microwave components. 展开更多
关键词 ferromagnetic resonance magnetic anisotropy magnetoelectric coupling effect oblique sputtering
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Large magnetoelectric effect in BaFe_(12)O_(19)-(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)particulate composite
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作者 Sheng Liu Pingping Gao +3 位作者 Hongxiang Zou Bo Qin Jun He Lianwen Deng 《Advanced Powder Materials》 2022年第3期1-10,共10页
Multiferroic composites with a large magnetoelectric response are gaining attractive interests for the design of magnetoelectric(ME)functional devices.In this work,the particulate ME composites(Ba_(0.85)Ca_(0.15))(Zr_... Multiferroic composites with a large magnetoelectric response are gaining attractive interests for the design of magnetoelectric(ME)functional devices.In this work,the particulate ME composites(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)-xBaFe_(12)O_(19)(x=0,0.1,0.2,0.3,0.4 and 1)were prepared,and their structural,dielectric,magnetic,ferroelectric,piezoelectric properties and magnetoelectric coupling were systematically investigated.The composites consisted of only two chemically separated phases with well-bonded interface.Dielectric and impedance analyses indicated the co-contribution of grain and grain boundary to polarization.Well-saturated ferroelectric and magnetic hysteresis loops demonstrated multiferroic nature.ME response was investigated elaborately by employing magnetically induced polarization,together with measuring ME voltage coefficient and magnetodielectric value.Specifically,a large ME coefficient of 26.78 mV/cm·Oe was achieved for x=0.3,which is higher than that in single-phase BaFe_(12)O_(19)and its coupled composites. 展开更多
关键词 magnetoelectric effect Particulate composite Hexaferrite BaFe_(12)O_(19) Magnetoelastic interaction
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Thin film processing and multiferroic properties of Fe-BaTiO_3 hybrid composite 被引量:1
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作者 Pan YANG Jin-song ZHU +1 位作者 Jai-Yeoul LEE Hee Young LEE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第A01期92-95,共4页
Multiferroic bi-layer Fe/BaTiO3 (BTO) thin films were successfully deposited on Pt(200)/MgO(100) substrates using ion beam sputter deposition (1BSD), and the mutiferroic properties were studied at room tempera... Multiferroic bi-layer Fe/BaTiO3 (BTO) thin films were successfully deposited on Pt(200)/MgO(100) substrates using ion beam sputter deposition (1BSD), and the mutiferroic properties were studied at room temperature. X-ray diffraction (XRD) analyses showed that BTO films were c-axis oriented and epitaxially grown on platinum coated MgO substrates, and (110) epitaxial Fe films were subsequently grown on (001) BTO films. Fe/BTO bi-layer films showed good ferroelectric and ferromagnetic properties at room temperature and the multiferroic coupling was observed, which should be attributed to the hybridization of Fe and Ti occurring at the ferromagnetic-ferroelectric interface. 展开更多
关键词 multiferroic effect FERROELECTRICITY magnetic properties magnetoelectric effect
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