A5088706769- Physics of Superconductivity and Magnetism
- Superconductivity in MgB2 and Alloys
- Iron-based superconductors research
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Magnesium Alloys: Properties and Applications
- Theoretical and Computational Physics
- Magnetic properties of thin films
- Superconducting Materials and Applications
- Magnetic Properties and Applications
- Magnetic confinement fusion research
- Quantum and electron transport phenomena
- Thermal Expansion and Ionic Conductivity
- Radioactivity and Radon Measurements
- HVDC Systems and Fault Protection
- Boron and Carbon Nanomaterials Research
- Climate change and permafrost
- Magnetic Properties of Alloys
- Cold Atom Physics and Bose-Einstein Condensates
- Patient-Provider Communication in Healthcare
- Induction Heating and Inverter Technology
- Aluminum Alloys Composites Properties
- Anodic Oxide Films and Nanostructures
- Geophysical Methods and Applications
- Mental Health and Psychiatry
Bolu Abant İzzet Baysal University
2015-2024
Inonu University
2022
Ankara University
2014
Currently, MgB2 wires made by the powder-in-tube (PIT) method are most often used in construction and design of superconducting devices. In this work, we investigated impact heat treatment under both low high isostatic pressures on formation a layered structure PIT manufactured using Mg coating method. The microstructure, chemical composition, density obtained superconductive were scanning electron microscopy (SEM) with an energy-dispersive X-ray spectroscopy (EDS) analyzer optical Kameram...
Abstract In this study, a new method called Three-Hole Internal Magnesium Diffusion (TH-IMD) was applied to the fabrication of superconducting monofilament MgB2/Fe wires. TH-IMD method, three thin magnesium rods were placed within boron powder in triangular arrangement instead single rod middle wire, as standard IMD method. The aim is ensure complete diffusion into surrounding during heat treatment wires and obtain uniform MgB2 structure throughout core region. To determine optimal...
This paper demonstrates the effects of hot isostatic pressure (HIP) on structure and transport critical parameters in situ MgB2 wires without a barrier. Our results show that only HIP nano-boron allow formation more high-field pinning centers, which lead to increase current density (J c) at high applied magnetic fields. Nano-boron annealing low J c field. indicates nano-particles create centers. In addition, improves connection between grains. Scanning electron microscope increases reaction...
Abstract We report transport, electromechanical, and structural properties of single core MgB 2 /Fe wire produced using a new fabrication method, called designed internal Mg diffusion (IMD) process, which relies on the use non-stoichiometric + B pellets with excess in place central rod used standard IMD method. Structural analysis revealed successful formation porous structure center dense circular layer surrounding this designed-IMD wire. Fast transport I – V measurements showed that method...
This paper demonstrates the details of vortex dynamics correlated to penetrated state by means evolution time dependence voltage $V$ for both at low and moderate dissipation levels. The transport relaxation measurements $(V\ensuremath{-}t)$ have been carried out in a bulk superconducting ${\mathrm{Y}}_{1}{\mathrm{Ba}}_{2}{\mathrm{Cu}}_{2}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ sample as function current (I), temperature (T), external field (H). It has observed that...
We investigated the influences of field orientation with respect to transport current, magnitude temperature and field-sweep rate (dH/dt) on evolution magnetovoltage (V–H) curves in polycrystalline superconducting bulk sample Y1Ba2Cu3O7−δ. In well-defined magnetic ranges, it was found that a relative decrease dissipation could be obtained depending current as decreases, so underlines importance time spent plot whole cycle V–H curves. This physical observation correlated more effective less...
Transport relaxation measurements (V-t) were carried out in bulk superconducting Y1Ba2Cu2O7−δ ceramic samples as a function of driving current (I), temperature (T), and external magnetic field (H). The evolution the V-t curve strongly depends on I, T, H. characteristics exhibit several features revealing details penetrated state associated with different flow patterns. Analysis data showed that process originates mainly from intergranular region. results provide direct evidence for vortices...
Abstract A novel type of superconducting joining technique has been introduced to join unreacted internal Mg diffusion (IMD) single-core MgB 2 wires. Our method is based on fabricating a small diameter joint mould obtained by deforming an Nb/Cu composite tube with longitudinal semi-cylindrical and B core into thick round wire. The the provided advantages such as rapid cooling, low resistance, unique design inside ensured uniform phase formation. Scanning electron microscope analysis revealed...
We fabricated four superconducting racetrack coils wound by bare in situ MgB <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Fe mono and multifilamentary wires produced our laboratory using the wind-and-react method. Transport measurements self-field were performed a liquid helium dewar. The magnetic field flux density B = 25 mT for I 92 A was measured to verify how current flowed inside coil one of means cryogenic axial Hall sensor...