We investigated on magnetic properties of magnetostrictive Fe81Ga19 films grown flexible polyethylene terephthalate (PET) substrates under various mechanical strains. The unstrained exhibit a significant uniaxial anisotropy due to residual stress in PET substrates. It was found that the squareness hysteresis loops can be tuned by an application strains, inward/compressive or outward/tensile bending films. A modified Stoner-Wohlfarth model with considering distribution easy axes...

We report an investigation on optical, ferroelectric, and photovoltaic properties of transparent Sn-doped In2O3 (ITO)/Pb(Zr0.53,Ti0.47)O3 (PZT)/ITO thin film capacitors. The ferroelectric PZT sandwiched structures grown glass substrates exhibit a transmittance 65% in the visible light range. current-voltage characteristics show that capacitors possess significant response under illumination. Moreover, can be well tuned by external electrical field, which understood considering tunable...

Magnetostrictive FeGa thin films were deposited on the bowed flexible polyethylene terephthalate (PET) substrates, which fixed convex mold. A compressive stress was induced in when PET substrates shaped from to flat. Due effect of magnetostriction, exhibit an obvious in-plane uniaxial magnetic anisotropy could be enhanced by increasing applied pre-strains during growth. Consequently, ferromagnetic resonance frequency significantly increased, but corresponding initial permeability decreased....

Abstract Exposure to green space is associated with both physical and mental health benefits, including the potential buffer acute stress responses, positioning it as a promising non-pharmacological approach protect cognitive functions against stress. However, urban residents often face significant barriers in accessing spaces, which are not equitably distributed. Virtual Reality (VR) technology offers solution by simulating that could be made accessible broader demographic. Here, we...

Abstract Antivortices have potential applications in future nano-functional devices, yet the formation of isolated antivortices traditionally requires nanoscale dimensions and near-zero magnetocrystalline anisotropy, limiting their broader application. Here, we propose an approach to forming multiferroic ε -Fe 2 O 3 with coalescence misaligned grains. By leveraging crystal domains, large anisotropy energy is counterbalanced, thereby stabilizing ground state antivortex. This method overcomes...

In this study, we investigated the stress-controlled magnetization processes and dynamic susceptibility of a magnetic vortex in FeGa disk under an external field. Our primary objectives were to elucidate nucleation process explore modulatory effects mechanical stress on its behavior. findings reveal that applied can regulate spin arrangement, leading different hysteresis loops with kinks switching magnetization. Specifically, tensile induces buckling state, facilitating transition from...

We have fabricated flexible exchange biased heterostructures with magnetostrictive Fe81Ga19 alloy as the ferromagnetic layer and Ir20Mn80 antiferromagnetic on polyethylene terephthalate substrates. The mechanical strain can modify both strength orientation of uniaxial anisotropy, giving rise to switching between easy hard magnetization directions. Different from previously reported works rigid systems, a drastic decrease in bias field was observed under compressive magnetic parallel pinning...

We propose a convenient method to induce uniaxial anisotropy in magnetostrictive Fe81Ga19 films grown on flexible polyethylene terephthalate (PET) substrates by bending the substrate prior deposition. A tensile/compressive stress is induced when PET are shaped from concave/convex flat after The stressed exhibit significant magnetic due internal arising changes shape of substrates. easy axis along tensile direction and coercive field increased with increasing stress. remanence hard decreased...

We systematically investigated the effect of a Ta buffer layer and external stress on magnetic properties magnetostrictive Fe81Ga19 films deposited flexible polyethylene terephthalate (PET) substrates. The layers could effectively smoothen rough surface PET. As result, FeGa grown exhibit weaker uniaxial anisotropy lower coercivity, as compared to those directly PET By inward outward bending FeGa/Ta/PET samples, in-plane compressive tensile stresses were applied films. Due inverse FeGa, both...

In this paper, we propose an approach that combines in situ mechanical-stress measurement and magnetic force microscopy (MFM) imaging enable manipulation of the spin configuration flexible films by tailoring stress-induced anisotropy. We demonstrate anisotropy can effectively rotate stripe domains. see that, without application field, domains tend to align parallel (perpendicular) direction tensile (compressive) stress. The expansion (shrinkage) flux-closure cap response applied stress,...

We fabricated epitaxial exchange biased (EB) IrMn/FeGa bilayers by oblique deposition and systematically investigated their magnetization reversal. Two different configurations with the uniaxial magnetic anisotropy ${K}_{u}$ parallel perpendicular to unidirectional ${K}_{eb}$ were obtained controlling orientation of incident FeGa beam during deposition. A large ratio ${K}_{u}/{K}_{eb}$ was obliquely depositing layer achieve a while reducing IrMn thickness obtain small ${K}_{eb}$. Besides...

We investigated the converse magnetoelectric (CME) effect in Fe81Ga19/polyvinylidene fluoride (PVDF) heterostructure films. A weak in-plane uniaxial magnetic anisotropy was observed as-deposited magnetostrictive FeGa When a positive (negative) electric field is applied on ferroelectric PVDF substrates, both coercivity and squareness of hysteresis loops films for parallel to easy axis become larger (smaller), but hard remanence get smaller (larger), indicating an anisotropic CME FeGa/PVDF

Thermal and electrical control of magnetic anisotropy were investigated in flexible Fe81Ga19 (FeGa)/Polyvinylidene fluoride (PVDF) multiferroic heterostructures. Due to the large anisotropic thermal deformation PVDF (α1 = −13 × 10−6 K−1 α2 −145 K−1), in-plane uniaxial (UMA) FeGa can be reoriented 90° by changing temperature across 295 K where films are magnetically isotropic. Thus, magnetization reversed cycling between 280 320 under a constant field lower than coercivity. Moreover,...

We investigate the control of magnetism with an electric field in Fe81Ga19(FeGa)/BaTiO3(BTO) heterostructure films. The as-prepared FeGa/BTO samples present a uniaxial magnetic anisotropy, which is ascribed to be induced by spontaneous ferroelectric polarization BTO substrates. With applied on substrates increasing from 0 6 kV/cm, coercivity FeGa films measured along BTO[110] direction increases 28 41 Oe, while squareness hysteresis loop decreases 0.99 0.31, indicates that easy and hard axes...

We experimentally demonstrate that high-resolution terahertz focusing can be realized in planar metalenses, which consist of arrays different V-shaped antenna units on a silicon substrate. Numerical results show larger numerical aperture metalenses provide smaller full width at half maximum field distribution, leading to higher spatial resolution. The measurement fabricated samples was performed by near-field imaging system, and experimental agree well with the prediction. Especially for 1.1...

Abstract We propose an all-optical approach to realize a super-oscillatory longitudinal magnetization hotspot with about 0.1 λ in 4 π focusing system using time-reversed dipole radiation and vector diffraction theory calculations. Such behavior is induced by focal fields of opposite polarities the central peripheral regions based on inverse Faraday effect. By regulating destructive interference field, super-oscillating field generated. Moreover, two important parameters affect size are also...

In the era of big data, all‐optical control magnetization is recognized as an alternative scheme that boosts accelerating advance multifunctional integrated opto‐magnetization devices with high‐density capacity. The light‐induced magnetizations demonstrated so far are devoted to steering their spatial orientations and structures by engineering complicated phase, amplitude, polarization modulations incident wavefronts, which, however, confront low efficiency, weak flexibility, limited...

This paper presented a method to carry out fault diagnosis via analyzing the motion signals of SCARA. To analyze end joint selective compliance assembly robot arm (SCARA) and diagnosis. A model parameter-based threshold algorithm is proposed in this study improve efficiency on SCARA manipulator. The operation state determined by comparing speed curve with using algorithm. Firstly, range system output estimated observer constructed parameter separation. Secondly, acceleration are collected at...

Knowledge of the dynamic magnetic susceptibility patterned films is great importance for exploring future data-storage applications and microwave devices. Since ferromagnetic resonance frequency a function geometric parameters certain system, in this work, we investigate by micromagnetic simulations set stripe-patterned FeGa films, which have an identical thickness 10 nm but varying width range 30–80 length 200–1000 nm. Fast-Fourier transform analysis simulation results calculation...

Abstract Manipulation of light‐induced magnetization has become a fundamentally hot topic with potentially high impact for atom trapping, confocal and magnetic resonance microscopy, data storage. The control the orientation mainly relies on direct methods composed amplitude, phase, polarization modulations incident light under tight focusing condition, leaving achievement arbitrary desirable 3D complicated, inflexible, inefficient. Here, facile approach called machine learning inverse design...

Introducing a flexible substrate in functional devices often brings about stress-tunable properties. Ferromagnetic nanorings fabricated on substrates hold promise for microwave applications based stretchable system. Here, through micromagnetic simulations, we report high-frequency dynamic properties of such FeGa each with magnetic vortex, concentrating the susceptibility and spatial structure relevant resonance modes response to an induced tensile or compressive stress. It is seen that...

<p indent=0mm>Surface plasmon polaritons have wide applications in sensing, biasing, absorption, and beam splitting, etc. because they can break diffraction limits strong field localization. So far, most of the research on terahertz surface is far-field spectrum, exploring near-field properties further needed. In this paper, based graphene strip structure, excitation distribution characteristics were studied. Specifically, microribbons that could excite by waves designed, was calculated....

Fabrication of thicker coating by induction cladding could achieve excellent properties, such as wear resistance, corrosion heat resistance and so on, also was an important technology for machinery parts remanufacturing.Used the mixture Ni60 SiC powder materials, discussed processing feasibility preparing on steel substrate cladding.The optimum technological parameters which can obtain good quality were: ratio is 20%, sodium silicate binder, heated at 150 ℃for 1 hours, intermitted heating...