Conveners
THU: Session 7
- Tibor-Adrian Óvári (National Institute of Research and Development for Technical Physics, Iasi, Romania)
THU: Session 8
- Tsuyoshi Uchiyama (Department of Electronics, Graduate School of Engineering; Nagoya University,)
THU: Session 9
- Sébastien Saez (Normandie Univ, UNICAEN, ENSICAEN, CNRS, GREYC, 14000 Caen, France)
Existing societal challenges require advancing innovative, eco-friendly technologies and the capacity to manufacture 3D structures sustainably and profitably. Progress in caloric materials, such as magneto- or elasto-caloric compounds, as integral components of the forthcoming generation of energy-efficient devices, offer new opportunities for exploring potential breakthroughs in additive...
The study of the propagation of a single domain wall (DW) is quite important for technological applications in order to understand and improve the operating features of devices based on DW logic. For that purpose, Fe-rich amorphous glass-coated microwires are excellent candidates as their magnetization process consists in the depinning of a single DW that propagates through the microwire at...
Flexible control over magnetic properties in thin films is essential for customization of magnetic devices for data storage, signal processing and especial sensor technology. Oblique incidence deposition (OID) offers the unique capability to prepare ultra-thin films with customized anisotropic surface morphologies and thus adjustable strength and orientation of uniaxial magnetic shape...
Harnessing extra degrees of freedom in magnetic oxides is of vital importance to bring new functionalities to cooling technology. The present study reports on the magnetocaloric effect (MCE) and magnetic exchange bias effect in the SrRuO$_{3}$ single layer and BiFeO$_{3}$/SrRuO$_{3}$ bilayers. MCE and exchange bias behaviors are found to be governed by Ru vacancies, structural distortions, and...
Technological demand for soft magnetic materials capable of operation at high temperatures has led to an increased interest in FeCo-based nanocrystalline alloys. Magnetic components in various energy conversion devices and sensors are during their operation often exposed to high temperature environments, which could have a marked impact on their performance. Therefore, a better knowledge about...
Studies of temperature dependence of the Giant magnetoimpedance, GMI, effect become essentially relevant from the viewpoint of applications of magnetic wire inclusions embedded in multifunctional composite materials for non-destructive and non-contact stress and temperature monitoring [1]. Most of the few studies on temperature dependence of GMI were performed in thick amorphous wires without...
The experimental evidence of large magnetoresistance in magnetite pellets is provided in this paper. Applying magnetic field along the length of the four-point probe resistivity monitoring, on the surface of a bulk magnetite pellet, results in elevated magnetoresistance change in the order of 100$\%$. Measurements were realized in $10^{-3}$ mbar vacuum with excitation currents from 0.1 A up to...
The Giant Magneto-Impedance effect, which changes impedance of amorphous wire in response to the magnetic fields, is used in highly sensitive magnetometers for measuring biomagnetic fields, electronic compasses, and other applications. GMI sensor face a trade-off between sensitivity and wide dynamic range. GMI sensors with sensitivity on the order of pico-tesla, suitable for biomagnetic...
The traditional wireless communication based on electromagnetic waves face difficulties when functioning in the harsh environments like underground, submarine or biological tissues. These difficulties are due to the rapid attenuation of the radio wave in these media. The communication method based on the magnetic field is the alternative solution for such scenarios because the magnetic field...
The aim of the ongoing research at our department in the field of magnetometers is the development of a compact modular magnetometric system operating with amorphous strips and microwires, used as a core. The motivation is in long-term research, development and testing of magnetometers with different types of control and processing electronics. The use of FPGA or CPLD devices for control and...
Magnetic field sensors are essential in our modern-day society, utilized in various applications including automobiles, mobile phones, and robotics. In this talk, I will discuss our work on magnetic field sensors that exploit spin orbit torque (SOT) to detect all three components of an external field with a single device. Initially, the focus will be on sensors where the signal is derived from...
The magnetoimpedance effect (MI) is an attractive phenomenon for several applications, such as magnetic field, stress, and temperature measurement, health monitoring and biological detection. To fully exploit the potential of these applications, it would be useful to develop numerical models able to predict the MI response under different conditions, accounting for materials with diverse...
Analytical expressions are favored for magnetic field calculations due to their speed compared to finite element simulations [1]. They excel in optimizing high-dimensional systems, allowing efficient exploration of parameter spaces, beneficial for designing cost-effective, robust, and accurate magnetic sensor systems [2]. Despite their usefulness, analytical expressions suffer from the...
An energy harvester is a device that converts ambient energy from various sources such as light, vibration, or heat into electrical energy for powering electronic devices in situations where it is not practical to rely on conventional power sources, such as batteries or connections to the electrical grid. There are different types of energy harvesters, each designed to take advantage of...
Extraordinary magnetoresistance (EMR) sensors are geometry-dependent 4-terminal devices based on high-conductivity semiconductors and metal inclusions, that can achieve over $10^6\,\%$ magnetoresistance ratios [1,2]. The origin of such effect can be explained by Lorentz force, rewriting the conductivity tensor of the semiconductor with a magnetic field dependence. Deviations of the current...
