Giant magnetoimpedance of amorphous ribbon/Cu/amorphous ribbon trilayer microstructures

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Interfaces between magnetic and non‐magnetic materials play a crucial role in various magnetic heterostructures. The emergence of 2D van der Waals (vdW) magnets has introduced new opportunities for exploring proximity effects in vdW heterostructures. While the influence of magnetic layers on nearby non‐magnetic materials has been widely studied, it remains unclear whether non‐magnetic substrates can similarly modulate the intrinsic magnetic properties of 2D magnets, particularly their magnetic anisotropy. I

In this work, we extend our previous studies (Singh et al 2023, Nucl. Fusion 63, 086029; Singh et al 2024, Nucl. Fusion 64, 106005) by performing global δf electromagnetic gyrokinetic simulations including collisions using the ORB5 particle-in-cell (PIC) code, spanning the plasma from magnetic axis to separatrix. The analysis focuses on ion temperature gradient (ITG) and trapped electron mode (TEM) turbulence in both linear and nonlinear regimes for experimentally relevant profiles and parameters of the ADI

Controlling magnetic moments using electric fields remains a central challenge in spintronics. Multiferroics, where magnetic and electric orders coexist, may be a natural platform for such control, but progress has been limited because interactions between these orders are typically too weak to overcome the energy barriers between magnetic states. A recently demonstrated topologically protected switching circumvents this limitation by exploiting reduced barriers at a phase transition. Nevertheless, the cond

Some magnetic materials exhibit a pronounced peak or upturn in resistivity upon cooling through the ordering transition, while others do not. To explain and quantify this phenomenon, we develop a simple model in which the carrier lifetime is calculated from the scattering of conduction electrons by local magnetic moments. Within this framework, we derive a general formula for the electron scattering rate, applicable to arbitrary energy dispersions and magnetic structure factors. Using ferromagnets as an exa

This chapter explores dual-band telemetry systems and presents a dual-band inductive link operating at 6.78 and 13.56 MHz within the industrial, scientific, and medical (ISM) frequency bands. The primary goal is to enable wireless power and data transmission for multisite biomedical implants. To minimize magnetic interference between coils and optimize the area, a single-coil transmitter configuration is adopted in the presented design. Additionally, this chapter examines the benefits of using various plana

The evolution of electronic transport under external tuning is a key aspect of quantum materials research. This thesis investigates how resistivity and related transport properties are governed by structural, electronic, and magnetic interactions, using layered pnictide compounds as a unified platform. Despite similar crystallographic frameworks, the selected materials (BaNi2P2, BaMn2P2, and EuIn2P2) exhibit distinct ground states, enabling a comparative study of how pressure and magnetic field affect super

Magnetic confinement fusion devices, such as tokamaks and stellarators, are designed such that magnetic field lines lie in magnetic surfaces that form a foliation of nested tori. The Poincaré–Hopf index theorem implies that only surfaces with Euler characteristic χ=0 allow for vector fields that lie tangent to the surface and are smooth and nowhere-vanishing. It is often implicitly assumed that magnetic surfaces are always toroidal. In this paper, we show that surfaces with the topology of a Klein bottle (t

This article presents a comprehensive multiphysics simulation of an integrated liquid-cooled silicon carbide (SiC) power module. In contrast to existing multiphysics studies, we experimentally validate the numerical model from a thermal perspective with an error margin of less than 4%, thereby enhancing the reliability of the model in terms of electrothermal coupling, nonisothermal flow, and thermal expansion. This validation offers valuable insights for the design of power modules with a novel embedded hea

Common metal additive manufacturing technologies require intensive energy sources such as lasers to achieve the melting and bonding of a metallic feedstock. This leads to a sizeable carbon footprint especially for reflective materials such as aluminium. Moreover, it induces complex and turbulent melt pool dynamics leading to stochastic defect formation mechanisms that are hence difficult to suppress. We aim to propose an alternative approach similar to what is now practised on a large scale with thermoplast

Research into mesoscopic magnetic systems, which incorporate magnetic elements with dimensions ranging from a few nm up to a few 10s of micrometer, has been spurred on by the developments in their fabrication, characterisation, and control. Electron beam and optical lithography are key methods for their fabrication because they can be used to create tailor- made planar arrangements of elements or more complex layered structures. These can be further transformed into high quality three-dimensional mesoscale

In the field of model order reduction for frequency response problems, the minimal rational interpolation (MRI) method has been shown to be quite effective. However, in some cases, numerical instabilities may arise when applying MRI to build a surrogate model over a large frequency range, spanning several orders of magnitude. We propose a strategy to overcome these instabilities, replacing an unstable global MRI surrogate with a union of stable local rational models. The partitioning of the frequency range

We present an open-loop CMOS current transducer without magnetic core consisting of a bus bar and a CMOS integrated magnetic sensor. The magnetic sensor is a combination of a circular vertical Hall device for low-frequency range and a pick-up coil for high-frequency range. The temperature cross-sensitivity of the Hall device is removed by measuring the angle of the magnetic field vector rather than its magnitude. The first measurement results show nonlinearity less than 1.5 % over 0-150 A range, wide dynami

In view of controlling wall and divertor heat loads in magnetic fusion devices, we investigate the possibility of creating convective cells by means of biased electrodes for turbulence and blob control in the simple magnetized toroidal plasmas of TORPEX. A two-dimensional array of 24 electrodes is installed on a metal limiter to test different biasing schemes. This allows influencing significantly the frequency of the dominant mode as well as radial and vertical velocities of blobs. Detailed measurements al

In a multi-gyrotron system such as the one presently designed for the ITER ECH & ECCD system, stray magnetic fields can significantly alter the operational capabilities of the global system. A numerical study was carried out within the European Gyrotron Consortium (EGYC) to assess the importance of the different effects and their impact on the gyrotron operation. Using the Ariadne++ 3D code, and based on the geometrical layout of the ITER-EC system, the effect of the ITER stray magnetic field combined toget

We present techniques and methodologies for the manipulation of magnetic micro- and nanoparticles ('beads') in microfluidic systems. We first introduce the most important forces that act on magnetic particles in a microfluidic system. Starting with the magnetic force that is responsible for the primary actuation of the magnetic particles, we discuss the viscous drag force induced when the particles are moving with a speed different from the liquid in the microfluidic channel. These forces can be combined in

The original magnetic properties of nanometre-sized particles are due to the distinct contributions of volume, surface and step atoms. To disentangle these contributions is an ongoing challenge of materials science. Here we introduce a method enabling the identification. of the remarkably different contributions of surface and perimeter atoms to the magnetic anisotropy energy of two-dimensional nanostructures. Our method uses the generally nonlinear relationship between perimeter length and surface area. At

Superconductors of type-II are partially penetrated by magnetic flux, where the pinning of flux tubes constitutes a memory that gives rise to a hysteresis. However, the hysteresis gradually disappears when a transport current approaches the critical current. This paper investigates what possibilities and limitations the Preisach model has to describe this hysteresis. Previous results are complimented by demonstrating the limitation to higher harmonics, the computation of an inverse model including an induct

The E-J power law as electric characterization of the HTS material in Finite Element computations has shown good agreement with measurements of field-dependent crtical current density and losses due to transport current. We use this technique to investigate the loss caused by Ac transport current in self-field and in applied AC magnetic field in both elliptical monocore and multicore tapes, where the current is generated by means of a voltage source. The current density is first kept constant and then varie

The frequency dependence (13.56-70 MHz) of the ion energy distribution at the ground electrode was measured by mass spectrometry in a symmetrical capacitive impedance at very high frequency allows high levels of plasma power and substrate ion flux while maintaining low levels of ion energy and electrode voltage. The lower limit of ion bombardment energy is fixed by the sheath floating potential at high frequency, in contrast to low frequencies where only the radio frequency voltage amplitude is a determinan

We study the diamagnetic surface currents of particles in thermal equilibrium submitted to a constant magnetic field. The current density of independent electrons with Boltzmann (respectively Fermi) statistics has a gaussian (respectively exponential) bound for its fall off into the bulk. For a system of interacting particles at low activity with Boltzmann statistics, the current density is localized near to the boundary and integrable when the two-body potential decays as |x|–agr, agr >4, agr>4, in three d

Giant magnetoimpedance of amorphous ribbon/Cu/amorphous ribbon trilayer microstructures

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Proximity Induced Magnetic Anisotropy and Trefoil Fermiology in Monolayer FeCl 2 /Bi(111)

Electromagnetic gyrokinetic simulation of drift wave turbulence in ADITYA-U with collisions

Highly controllable switching pathways in multiferroic GdMn2O5

Resistivity Anomalies Arising From Spin Correlations in Magnetic Metals

Implantable Dual-Band Inductive Link

Pressure-tuned transport and magnetic scattering in layered pnictides: BaNi2P2, BaMn2P2, and EuIn2P2

Surfaces with Klein bottle topology occur in fusion reactor fields

Comprehensive Multi-Physics Modeling of Integrated Liquid-Cooled SiC Power Modules

Magnetic Field-Assisted Direct Liquid Metal Deposition

Mesoscopic magnetic systems: From fundamental properties to devices

MATHICSE Technical Report : A technique for non-intrusive greedy piecewise-rational model reduction of frequency response problems over wide frequency bands

Open-loop CMOS Current Transducer with Low Temperature Cross-sensitivity

Convective cells and blob control in a simple magnetized torus

Calculation of Stray Magnetic Field Effects on the Operation of the ITER Electron Cyclotron System

Magnetic Particle Handling In Microfluidic Systems

The remarkable difference between surface and step atoms in the magnetic anisotropy of two-dimensional nanostructures

Possibilities and limitations of using Preisach model for hysteresis in superconductors

Losses in HTS Tapes due to AC External Magnetic Field and AC Transport Current

Sheath impedance effects in very high frequency plasma experiments

Diamagnetic currents