JOURNAL OF APPLIED PHYSICS
·
2024
·Vol. 136
·期 3
·
IF 2.7
Wang L. G.,Cui H.,Zhu C. M.,Wang R.,Yu G. B.,Su X. F.,Jiang X. L.,Jiang Y.
Some spinel chromium oxides with the chemical formula ACr 2 O 4 exhibit magnetic-induced multiferroicity due to the special spiral spin order. However, because of the relatively low temperature of the ordered spiral phase, this kind of multiferroicity generally displays a limited coexistence of magnetic and ferroelectric orders in a narrow temperature range. The Jahn–Teller (JT) effect, serving as a crucial link between charge and orbit degrees of freedom, can facilitate efficient modulation of multiferroic properties. In this work, Ni 1− x Cu x Cr 2 O 4 (0 ≤ x ≤ 0.2) series are synthesized by occupying the same Wyckoff site with two kinds of JT ions. The microstructure and JT distortion can be distinctly influenced by varying the doping level of Cu 2+ ions. Particularly, Ni 0.85 Cu 0.15 Cr 2 O 4 ( x = 0.15) presents the pronounced JT distortion, accompanied by observation of dielectric anomaly at ∼78 K, resulting from spin–orbit coupling. This implies that the JT effect can significantly promote the contribution of spin–orbit coupling in magnetoelectric correlation. Moreover, the magnetodielectric effect induced by intrinsic magnetoelectric coupling is confirmed in Ni 0.85 Cu 0.15 Cr 2 O 4 over a wide temperature range of 10–200 K, which is much higher than the Néel temperature of ∼85 K. It indicates that spin–orbit coupling based on the JT effect could overcome the constraint of magnetic order to achieve effective control on electric polarization performance under an applied magnetic field, thereby showing broad application prospects.
研究领域:
材料科学
·
凝聚态物理
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Jiachen Liang,Xinyue Huang,Kaiqi Qin,Hui Wei,Jiaxin Yang,Bin Liu,Zengjie Fan
Enhancing defective cartilage repair by creating a bionic cartilage hydrogel supplemented with in situ electromagnetic stimulation, replicating endogenous electromagnetic effects, remains challenging. To achieve this, a unique three-phase solvent system is designed to prepare a magnetoelectric bionic cartilage hydrogel incorporating piezoelectric poly(3-hydroxybutyric acid-3-hydroxyvaleric acid) (PHBV) and magnetostrictive triiron tetraoxide nanoparticles (Fe 3 O 4 NPs) into sodium alginate (SA) hydrogel to form a dual-network, semi-crosslinked chain entanglement structure. The synthesized hydrogel features similar composition, structure, and mechanical properties to natural cartilage. In addition, after the implantation of cartilage, the motion-driven magnetoelectric-coupled cyclic transformation model is triggered by gentle joint forces, initiating a piezoelectric response that leads to magnetoelectric-coupled cyclic transformation. The freely excitable and cyclically enhanced electromagnetic stimulation it can provide, by simulating and amplifying endogenous electromagnetic effects, obtains induced defective cartilage repair efficacy superior to piezoelectric or magnetic stimulation alone.
研究领域:
生物材料学
·
再生医学
·
生物力学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 35
·期 1
·1-13
·
IF 2.8
Ding Yiwen,Ren KeJu,Zeng Zhixin,Meng Gang,Gao Rongli,Deng Xiaoling,Chen Gang,Cai Wei,Fu Chunlin,Wang Zhenhua,Lei Xiang
The potential applications of magnetoelectric composites in capacitors, sensors, memory electronic devices, and energy harvesting devices have aroused great interest due to their mutual coupling between ferroelectric and ferromagnetic phases. In this paper, BFO/CFO composite films were prepared by the sol–gel method, and the regulation of magneto-photoelectric and coupling properties of BFO/CFO films with different compositions was studied. The results show that with the increase of BFO composition, the interface between BFO layer and BFO layer also appears, the dielectric constant of the film decreases with increasing the content of BFO, and the photoelectric conversion efficiency of the film increases at first and then decreases with the increase of BFO content. When the composition is 4BFO/6CFO, the photoelectric conversion efficiency of the composite film is the highest, which is 2.02 × 10 −3 %. With the increase of CFO content, the remanent magnetization and saturation magnetization of the film increase gradually. However, when the compositions are 4BFO/6CFO and 3BFO/7CFO, their leakage current is high, resulting in the degradation of ferroelectric properties. The composition 5BFO/5CFO has the highest magnetodielectric and photo induced magnetodielectric response, the corresponding values are 2.21% and 3.88%, respectively. The magnetoelectric coupling coefficient of the film is greatly increased under the action of light, reaching 115%, which could plausibly relate to the photovoltaic effect and the photostriction effects of the film. These results may provide good guidance on designing new photoelectromagnetic detector.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Xue Li,Guo-Long Tan
Coexistence of ferroelectricity and ferromagnetism in one single phase of a solid is of great interest because of the potential application for novel electronic devices. We report on the enhanced ferroelectricity jointly co-existing with excellent magnetic performance in M-type barium hexaferrite (BaFe 12 O 19 ), which demonstrating a classic electric polarization (P-E) hysteresis loop with full saturation. Two nonlinear current peaks in the I–V curve for polarization switch and giant abnormal change of dielectric constant near Curie temperatures provide sufficient experimental evidences to verify the ferroelectricity of BaFe 12 O 19 ceramics. It holds a large remnant polarization of 55.7 μC/cm 2 and a suitable coercive field at 441 kV/cm. Two peaks at 194 °C and 451 °C in the temperature-dependent dielectric spectrum of BaFe 12 O 19 ceramics are considered to be the phase transition from ferro-to antiferro- and antiferro-to para-electric structures. A conventional strong magnetic hysteresis loop was also observed. The influence of oxygen vacancies on the band structure, electric and magnetic properties has been discussed in detail. The magnetically induced E-polarization upon the BaFe 12 O 19 ceramics was achieved in the form of alternating spin current waves. These combined multiple functional responses of large ferroelectrics and strong ferromagnetism reveal the excellent multiferroic features of BaFe 12 O 19 , which would bring forth the great opportunity to create novel electric devices with active coupling effect between magnetic and electric orders.
研究领域:
凝聚态物理
·
功能材料
·
磁学
·
铁电学
·
电子陶瓷
·
多场耦合材料
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Yuanyuan Yao,Shaohua Jin,Dongxu Wang,Junfeng Wang,Dongze Li,Xijuan Lv,Qinghai Shu
The rapid development of electronic information technology has brought huge challenges to high-performance electromagnetic interference (EMI) shielding films, especially for multi-band shielding. In this work, the core-shell structure of polydopamine coated silver nanowires (AgNWs) was formed by in situ polymerization of dopamine on the surface of AgNWs, the modified AgNWs were attached to the layered graphene surface through noncovalent bonds, magnetic Fe 3 O 4 particles were then loaded on graphene/AgNWs to form magnetoelectric coupling fillers and cast with polyvinyl alcohol (PVA) to obtain nanocomposite films. The conductive fillers were uniformly dispersed in the PVA matrix with well compatibility, the resulting composite films not only displayed good flexibility, but also had been first time reported to show fine EMI shielding performance in both GPS band and X band thanks to the synergistic effect from the combination of conductive and magnetic fillers through an innovative structure. These nanocomposite films with good EMI shielding properties would show good application prospects in the fields of flexible electronics, electromagnetic countermeasure and stealth materials.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2012
·
IF 2.353
Gang Jian,Dongxiang Zhou,Junyou Yang,Hui Shao,Fei Xue,Qiuyun Fu
BaTiO 3 /CoFe 2 O 4 bilayer films on high temperature resistant Al 2 O 3 /Pt substrates were fabricated using the electrophoretic deposition (EPD) method. Powder synthesis , suspension preparation and kinetics of deposition were investigated in detail. Two different sintering temperatures were tested and the resultant microstructure and properties of ceramic films were investigated. The composite films sintered at a temperature of 1200 °C/2 h yielded optimal microstructures and properties. The obtained bilayer films had a dense structure with no phase diffusion or passive layer. Besides to ferroelectric and magnetic properties, magnetoelectric (ME) coupling properties were also confirmed by the magnetic anisotropy and magnetic field induced polarization investigation. The composite films showed a increased P s from 16.2 to 16.85 μC/cm 2 with variations Δ P s of 4% when the magnetic field was applied in parallel direction and a decreased P s from 16.2 to 14.9 μC/cm 2 with variations Δ P s of −8% when a normal direction field was applied.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2024
·
IF 2.5
Jitao Zhang,Xingkui Mu,Qingfang Zhang,Natallia Poddubnaya,Dmitry Filippov,Jiagui Tao,Fang Wang,Liying Jiang,Lingzhi Cao
Development of high-quality ferrites behaved enhanced properties via inclusion of ions in 3d n and 4f n series are desirable for efficient power conversion solid-state devices. Nevertheless, inadequate microscopic behaviors with complex chemistry in materials enables researchers to design and produce the macroscopic target device that remained rudimentary and mindless. In this work, the microscopic properties in nickel-zinc spinel ferrite series of Ni 0.8 Zn 0.2 Sm x Fe 2- x O 4 ( x = 0, 0.02, 0.04, 0.06, 0.08) encompassing XRD, SEM, EDS, VSM, FTIR and ESR were systemically characterized, and the evolutionary mechanism of the corresponding structural, micro-structure, elemental composition and distribution, magnetic, cations exchange, and micro-magnetic behavior was profoundly revealed. Under microscopic examinations, the optimum composition at x = 0.02 with well-arranged spinel structure, dense texture with expected elemental composition, favorable soft magnetic properties and micro-magnetic behaviors is evident. Fortunately, this optimum is in coincidence with the achievable maximum magneto-mechanical coefficient, even the macroscopic electric properties with stronger magnetoelectric (ME) interactions and higher power conversion efficiency (PE) in tri-layered ME samples as expected. Experimental results show that the eventual PE reaches its maximum of 75.67 % under R opt = 33kΩ for samples at x = 0.02, and exhibit a 2.24 times higher PE than that of sample without samarium substitution. These findings provide a holographic perspective to connect the microscopic beneficial effects of materials to bulk device that are promising for efficient power conversion solid-state electronics.
研究领域:
材料科学
·
磁性材料
·
固态电子学
·
功能陶瓷
·
能源转换技术
✓ 已验证
DOI
高影响因子
Nanoscale Horizons
·
2025
·Vol. 10
·期 3
·561-567
·
IF 6.6
Yu Xing,Haoshen Ye,Guowei Du,Xu Li,Le-Ping Miao,Junchao Zhang,Xiong Luo,Xiyu Chen,Haoran Ye,Aoli Shen,Zhicheng Wang,Yumeng You,Shuai Dong,Linglong Li
The coexistence of electric and magnetic orders with intrinsic coupling, referred to as magnetoelectric coupling in multiferroics, has been extensively studied in oxide materials but remains relatively unexplored in van der Waals materials. Among these, CuCrP2S6 (CCPS) is notable for its emergent antiferromagnetic (AFM) and antiferroelectric (AFE) characteristics. However, investigations into magnetoelectric coupling in CCPS are limited, and the effects of dopants on its magnetic properties have yet to be fully addressed. In this study, we synthesized CuCr1−xFexP2S6 (CCFPS) samples using the chemical vapor transport (CVT) method to investigate the influence of iron doping on the magnetic and nonlinear optical properties of the CCFPS system. Our results indicate that the AFM state is preserved, while the Néel temperature (TN) varies with the doping concentration. First-principles calculations were employed to assess the exchange interactions among magnetic atoms. Notably, for samples with doping concentrations x < 0.5, we observed both magnetic-dielectric coupling and second harmonic generation (SHG) effects. However, these effects were absent at higher doping levels. Furthermore, our analysis revealed a distinct odd–even dependence of SHG, suggesting the presence of interlayer symmetry-breaking coupling. These findings advance our understanding of two-dimensional (2D) multiferroic materials and lay the groundwork for designing and optimizing magnetoelectric coupling materials with enhanced performance.
研究领域:
凝聚态物理
·
材料科学
·
二维材料
·
多铁材料
·
自旋电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xiaohu Ren,Ruidong He,Yun Tang,Zhen He,Yuchi Liu,Hongfeng Yin,Hudie Yuan,Wanxin Hu,Yalou Xin,Dongyun Gui,Huiqing Fan
The design of low-dimensional structures and the construction of heterogeneous interfaces are promising approaches for developing efficient microwave absorption materials (MAM), whose properties have the potential to improve the microwave absorption capacity of single-phase materials. Barium ferrite is an excellent MAM due to its excellent high-frequency magnetic properties and structural stability. However, its poor conductivity and weak polarization limit its applications. In this study, Mn-Zr doped M-type barium ferrite nanofibers were synthesized by electrospinning and high-temperature pyrolysis. A conductive polymer layer of polypyrrole was then polymerized in situ on the fiber surface to form a composite nanofibrous MAM with a one-dimensional core-shell heterostructure. At the microscopic level, a conductive polymer heterostructure interface was constructed on the surface of the one-dimensional ferrite fibers. The magnetoelectric coupling network at the interface induced interfacial polarization and increased the conduction loss, which improved the microwave absorption performance. The results show that the optimized sample, benefiting from multiple loss mechanisms and excellent impedance matching, achieved a minimum reflection loss of −44.20 dB at 8.7 GHz with a matching thickness of 4.0 mm. It also exhibited an effective absorption bandwidth of 3.5 GHz. Therefore, this study demonstrates that the synthesis and application of low-dimensional organic/inorganic magnetoelectric composites as heterogeneous microwave absorbers have broad prospects.
研究领域:
材料科学
·
纳米技术
·
电磁吸收
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Bowei Liu,Rui Feng,Ling Zhou,Tong Zhou,Peng Su,Guanghui Zhao,Lijie Dong
Flexible multiferroic materials with lightweight, wearability, portability and high magnetoelectric conversion present significant potential for applications in wearable, wireless and self-powered device engineering. However, simultaneously achieving high magnetoelectric conversion and ideal flexibility remains a demanding challenge of multiferroic composite materials. Here, novel flexible magnetoelectric nanocomposite films are developed based on the self-synthesized ultra-fine magnetostrictive nanofibers and electrostrictive polymer P(VDF-TrFE). The ultra-fine magnetostrictive nanofibers have been tailored into 15 nm of average diameter by utilizing an ultra-fine polymer template ( s PPTA). This design aligns with the dimensions of P(VDF-TrFE) crystals to ensure optimal interfacial compatibility and effective stress transfer between the magnetostrictive and electrostrictive phase. Remarkably, a small amount (3 wt%) of nanofibers in the nanocomposite films enables a synergistic output effect of magnetoelectric coupling coefficient of 43.0 mV·cm −1 ·Oe −1 . The incorporation of ultra-fine and low-content nanofillers contributes to the lightweight and flexible nature of the nanocomposite films with the elongation at a break of 9 %. Moreover, the magneto-machine-electric conversion shows 7 % enhancement with a magnetic field application to verify the active effect of the magnetic field on strain response. This approach opens up a new avenue for the design and modulation of flexible magnetoelectric films and paves the way for wireless and wearable multifunctional devices.
研究领域:
材料科学
·
电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yiming Wang,Jin Chen,Jianye Shi,Jing Zhang,Yuzhao Ma,Xiaofeng Yang,Yanjun Li
The integration of microscopic material designs and macroscopic structural layouts offers unlimited potential for developing advanced electromagnetic wave (EMW) absorbers. Herein, a pyrolysis-based strategy is reported for the hybridization of Ti 3 C 2 T x MXene nanosheets to achieve relaxation processes and high-density magnetic coupling at the nanoscale. The stratified structure of Ti 3 C 2 T x /Fe-MOF considerably amplifies the active contact region with electromagnetic radiation, thereby inducing numerous reflection/scattering phenomena. Through pyrolytic transformation, derived nanoparticles including Fe, C, Fe 3 O 4 , and TiO 2 establish continuous metal–carbon and carbon-oxide interfaces below 50 nm. Consequently, the heterogeneous interfaces formed between these components establish a harmonious electromagnetic coupling network, where interfacial polarization from numerous heterojunctions promotes charge accumulation and relaxation processes, converting electromagnetic energy into thermal energy. Remarkably, findings indicate that this composite material demonstrates a minimum reflection loss (RL min ) of −47.05 dB when the thickness reaches 1.8 mm. Additionally, this investigation broadens the spectrum of design strategies for premium microwave absorption materials through systematic interface engineering and thermally-controlled phase conversion.
研究领域:
材料科学
·
纳米技术
·
电磁学
·
微波工程
✓ 已验证
产品关联
DOI
高影响因子
Bioactive Materials
·
2025
·
IF 20.3
Anmin Wang,Wenjing Song,Wentai Guo,Baolei Huang,Xingqiang Zhu,Hailin Zhang,Wei Zhai,Ye Tian,Li Ren
Peripheral nerve injuries remain a clinical challenge due to the limitations of autografts and unstable electrical signals in existing bioelectronic therapies. It is necessary to develop innovative strategies to achieve wireless, controllable peripheral neural regeneration (PNR). In this study, we developed a magneto-electric coupling-driven electroactive nerve guidance conduits (PCLG/AgNF NGCs) with a moving magnetic field (MMF) for PNR with wireless magneto-electric coupling electrical stimulation (MECES). PCLG/AgNF displayed high conductivity (25.48 ± 3.77 S/cm) and wireless controllability of generating electrical pulses (16.67 ± 0.47 μA to 475.7 ± 9.71 μA) with an MMF. The MECES produced by PCLG/AgNF with the MMF significantly promoted cell proliferation, cell migration, and upregulated the expression of β3-tubulin, neurofilament heavy chain and growth-associated protein 43, compared to PCLG/AgNF and MMF used individually. Mechanistically, we identified that PCLG/AgNF with the MMF activated the metabolism of taurine and hypotaurine corroborated by elevated intracellular taurine, which is crucial for MECES mediated repair processes. In a rat peripheral nerve defect model, the PCLG/AgNF NGCs with the MMF showed promising results in nerve regrowth, myelination, and functional recovery, performing comparably to autografts. This strategy offers PCLG/AgNF NGCs as a wireless, controllable, precision-enabled approach and provides novel insights for the effective PNR.
研究领域:
生物医学工程
·
神经科学
·
生物电子学
·
组织工程
·
再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）