A5004623748- Multiferroics and related materials
- Magnetic properties of thin films
- Advanced Fiber Optic Sensors
- Advanced Sensor and Energy Harvesting Materials
- Magnetic and transport properties of perovskites and related materials
- Magneto-Optical Properties and Applications
- Acoustic Wave Resonator Technologies
- Photonic and Optical Devices
- Ferroelectric and Piezoelectric Materials
- Financial Markets and Investment Strategies
- Second Language Learning and Teaching
- International Student and Expatriate Challenges
- Higher Education and Teaching Methods
- Conducting polymers and applications
- Stock Market Forecasting Methods
- EFL/ESL Teaching and Learning
- Optical Coherence Tomography Applications
- Advanced Condensed Matter Physics
- Fault Detection and Control Systems
- Electromagnetic wave absorption materials
- Semiconductor materials and devices
- Optical Wireless Communication Technologies
- Magnetic Field Sensors Techniques
- Hand Gesture Recognition Systems
- Innovative Energy Harvesting Technologies
Xi'an Jiaotong University
2017-2025
Yantai University
2023
Sanya University
2021-2023
Northeastern University
2022
China Power Engineering Consulting Group (China)
2020
One of the central challenges in realizing multiferroics-based magnetoelectric memories is to switch perpendicular magnetic anisotropy (PMA) with a control voltage. In this study, we demonstrate electrical flipping magnetization between out-of-plane and in-plane directions (Co/Pt)3/(011) Pb(Mg1/3Nb2/3)O3-PbTiO3 multiferroic heterostructures through voltage-controllable spin reorientation transition (SRT). The SRT onset temperature can be dramatically suppressed at least 200 K by applying an...
Oxide nanosprings have attracted many research interests because of their anticorrosion, high-temperature tolerance, oxidation resistance, and enhanced-mechanic-response from unique helix structures, enabling various applications like nanomanipulators, nanomotors, nanoswitches, sensors, energy harvesters. However, preparing oxide is a challenge for intrinsic lack elasticity. Here, an approach self-assembled, epitaxial, ferroelectric with built-in strain due to the lattice mismatch in...
The operation mechanism of giant magnetoresistance (GMR) sensors relies on the linear response magnetization direction to an external magnetic field. Since anisotropy ferromagnetic layers can be manipulated by a strain-mediated magnetoelectric coupling effect, we propose tunable GMR field sensor design that allows for voltage tuning range and sensitivity. A spin valve structure Ru/CoFe/Cu/CoFe/IrMn/Ru is grown PMN-PT (011) substrate, directions controlled electric An adjustable therefore...
Abstract Continuous urbanization and a coordinated regional development strategy have gradually shaped urban agglomerations as new massive centers of resource consumption in China. Therefore, understanding the material status underlying mechanisms for typical Chinese will support efforts to promote resource‐utilization sustainability. In this study, we analyzed its structure Beijing–Tianjin–Hebei (Jing–Jin–Ji) agglomeration from 2000 2015 traced sources processes metabolic perspective. We...
Considering the magnetic shielding requirements of both geomagnetic field and 50 Hz power-line frequency in complex working conditions power grid, an electromagnetic system combining active passive modes is proposed this article. A three-dimensional Helmholtz coil with a barrel nested inside established by COMSOL simulation tool, efficiency analyzed. Comparing different materials, results indicate that permalloy alloy exhibits better performance than pure iron nickel materials. Additionally,...
At present, flexible pressure-sensitive materials generally have problems with weak adhesion and poor wear resistance, which easily result in friction failure when used for plantar pressure detection. In this study, a sensor the advantages of wide detection range, fast recovery, good abrasive resistance was designed prepared based on screen printing process. The unit structural size 5 mm× 8 mm functional material system due to use graphene epoxy resin. influence different mass ratios resin...
Controlling spin dynamics through modulation of interactions in a fast, compact, and energy-efficient way is compelling for its abundant physical phenomena great application potential next-generation voltage controllable spintronic devices. In this work, we report electric field manipulation dynamics—the two-magnon scattering (TMS) effect Ni0.5Zn0.5Fe2O4 (NZFO)/Pb(Mg2/3Nb1/3)–PbTiO3 (PMN–PT) multiferroic heterostructures, which breaks the bottleneck magnetostatic interaction-based...
In spite of recent rapid development flexible electronics, voltage-tunable spintronic structures and devices on substrates have been rarely studied. Here, voltage control magnetic anisotropy (VCMA) is demonstrated via ionic gel (IG) gating polyimide with a circuit operating 1.8 V. A reversible, nonvolatile VCMA switching 114 Oe achieved in Pt/Fe/Pt multilayer, where the spatial distribution determined quantitatively by electron spin resonance technique. This IG process repeatable as are...
<title>Abstract</title> Although arrayed waveguide gratings (AWGs) are widely used in fibre Bragg grating (FBG) demodulation systems, their applications real environments have been limited due to narrow dynamic range and inability continuously demodulate FBGs because of the finite bandwidth AWG channels. Here, we developed a wide-dynamic-range, high-precision, continuous-demodulation FBG interrogator utilizing dual-input channel on-chip silicon AWG. The introduction two input channels...
The voltage modulation in spin dynamics via the spin-lattice coupling (SLC) effect has been investigated epitaxial La0.5Sr0.5MnO3/PMN-PT multiferroic heterostructures. critical angle for disappearance of first exchange (FEX) wave observed around 67° experimentally and shifted about 4° by applying an electric field (E-field). In particular, at angle, FEX can be switched “on” “off” voltages, showing great potential realizing magnonic devices. Moreover, resonance shift 187 Oe 173 K realized...
Abstract Electric field (E-field) control of magnetism based on magnetoelectric coupling is one the promising approaches for manipulating magnetization with low power consumption. The evolution magnetic domains under in-situ E-fields significant practical applications in integrated micro/nano devices. Here, we report vector analysis E-field-driven antiparallel domain FeCoSiB/PMN-PT(011) multiferroic heterostructures via quantitative magneto-optical Kerr microscope. It demonstrated that can...
Giant magnetoresistance (GMR) sensors have been widely used in current detection, compass, automobile, and Internet of Things. The linearity GMR relies on a magnetic annealing process above the blocking temperature antiferromagnetic layer, which causes same magnetization directions free pinned ferromagnetic layers. Here we construct an orthogonal anisotropic structure by using relatively low 145 °C, where direction layer is perpendicular to that so linear output can be realized. Quantitative...
A co-sputtering process for the deposition of Fe0.8Ga0.2B alloy magnetostrictive thin films is studied in this paper. The soft magnetic performance modulated by direct-current (DC) sputtering power an FeGa target and radio-frequency (RF) a B target. Characterization results show that prepared are amorphous with uniform thickness low coercivity. With increasing DC power, coercivity raises, resulting from enhancement magnetism grain growth. On other hand, when RF increases, decreases first...
Abstract The rapid development of the internet things technology has led to great demand for intelligent electric field sensor (EFS). Several working principles have been proposed, however major challenges remain existed requirements EFS with low-cost, large-range, and high-resolution. In this paper, an based on piezoelectric (PE) bending effect using d 31 mode is developed, where a strain induced sandwiched bimorph structure PZT/PDMS/PZT under applied field, capacitance value PDMS layer...
Here, we present a high-precision demodulation method that supports the arrayed waveguide grating (AWG) system, which includes 1 × 8 AWG as primary filter with 0.5 nm channel spacing and 4 auxiliary spacing. The high precision is achieved through an innovative of decoupling three channels, involving two adjacent channels one secondary filter. Simulation results show AWGs have good transmission spectrum crosstalk below -24.8 dB, non-uniformities 0.8 insertion loss -3.7 3 dB bandwidth 0.25 nm,...
Magnetic field sensors based on the strain-mediated magnetoelectric (ME) coupling are usually bulky and energy-consuming due to requirement for DC magnetic bias field, use of piezoelectric ceramics or single crystals cannot bear overlarge strain their fragility. Here, we demonstrate a stress-mediated ME sensor operating in torque mode without field. Combined with elastic layers, NdFeB permanent magnets induce compressive stress layer via effect under weak The contribution from d <sub...
A magnetic field sensor consisting of a surface acoustic wave (SAW) generator and cantilever beam with NdFeB permanent magnets are developed. The working principle this relies on the center frequency shift SAW device under as consequence torque-effect-induced deformation cantilever, which changes stress piezoelectric LiNbO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> spacing between interdigital transducers (IDTs). Compared other...
An intensity-demodulated fiber-optic magnetometer is proposed and experimentally investigated, which fabricated via fusion splicing a segment of photonic crystal fiber (PCF) between single-mode fibers (SMFs), with the cladding air holes PCF filled magnetic fluid. Using magneto-optical properties fluid, transmission spectrum changed an external field. Based on intensity variations in spectrum, field detected, sensitivity 0.238 dB/mT obtained at 1550.03 nm length 5.5 cm. By converting light...