A5004943855- Magnetic Properties of Alloys
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Magnetic and transport properties of perovskites and related materials
- Rare-earth and actinide compounds
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Heusler alloys: electronic and magnetic properties
- Metallic Glasses and Amorphous Alloys
- Hydrogen Storage and Materials
- Quantum Information and Cryptography
- Luminescence and Fluorescent Materials
- Microstructure and Mechanical Properties of Steels
- Superconducting Materials and Applications
- Strong Light-Matter Interactions
- Covalent Organic Framework Applications
- Metal Alloys Wear and Properties
- Porphyrin and Phthalocyanine Chemistry
- Physics of Superconductivity and Magnetism
- Plasmonic and Surface Plasmon Research
- Electrochemical Analysis and Applications
- Electric Motor Design and Analysis
- Medieval European Literature and History
- Metallurgy and Material Forming
- Magneto-Optical Properties and Applications
National Institute for Materials Science
2018-2024
Technical University of Darmstadt
2024
Trinity College Dublin
2014-2022
Hacettepe University
2019
Advanced Materials and BioEngineering Research
2017
Advanced computer simulations and database access enable the design of novel magnetic materials at an unprecedented speed.
Multi-level magnetic recording is a new concept for increasing the data storage capacity of hard disk drives. However, its implementation has been limited by lack suitable media capable storing information at multiple levels. Herein, we overcome this problem developing dual FePt-C nanogranular films separated Ru-C breaking layer with cubic crystal structure. The FePt grains in bottom and top layers developed exhibited different effective magnetocrystalline anisotropies Curie temperatures....
The research interest in SmFe12-based permanent magnets has recently been revived search for new magnet materials that are not dependent on critical rare earth elements such as Nd and Dy. Although the superiority of intrinsic hard magnetic properties Sm(Fe0.8Co0.2)12 compound compared to those Nd2Fe14B experimentally confirmed, its instability a bulk phase inability achieve high coercivity hinder realization high-performance magnets. In this Viewpoint, by critically reviewing recent...
The effect of V on the phase stability and intrinsic magnetic properties SmFe12-xVx (0 ≤ x 1.9) thin films, bulk (x = 1.5 2) are investigated. It is found that help to stabilize ThMn12-type by decreasing lattice parameters c c/a ratio up its solid solubility limit 1.4. Above this limit, formation Sm-rich has been observed in microstructure. Interestingly, Curie temperature (Tc) anisotropy field (μ0Ha) do not exhibit same trend with magnetization (μ0Ms) where increasing enhances two...
We report excellent intrinsic magnetic properties of SmFe9Nδ (δ=0, 0.5, 0.7 and 1.1) epitaxial thin films with TbCu7-type crystal structure, i.e., room temperature saturation magnetization (μ0Ms) 1.64 T, Curie (Tc) 771 K anisotropy field (μ0HA) ∼22 T for δ=1.1 the which is superior to that Sm2Fe17N3 (μ0Ms= 1.57 T) Nd2Fe14B compounds 1.61 T). X-ray diffraction transmission electron microscopy revealed have a highly textured single phase its c-axis perpendicular film. Heat treatment under N...
The hysteresis of ball-milled Fe-doped YCo5 powder has been optimized by controlling the temperature and time for rapid annealing under vacuum argon. crystallite size is only 25 nm; yet, it possible to field align Y(Co,Fe) with a 5–20 μm grain in 5 T obtain remanence ratio 0.65, due texture powder. nominal energy product 140 kJ/m3. A pressed magnet 78% theoretical density an 65 This could fill gap between oriented ferrite (34 kJ/m3) Nd-Fe-B (350 kJ/m3).
The Purcell factor and the spontaneous emission spectrum of a quantum emitter (QE) placed close to edge graphene half-space nanostructure is investigated, using semianalytical methods at electrostatic regime. geometry supports an bulk surface plasmon (SP) mode. QE enhanced over eight orders magnitude when its energy matches resonance modes, for specific value in-plane wave vector, separation distance 10 nm. different transition dipole moment orientations influence differently enhancement QE,...
Abstract Large saturation magnetization in the SmFe 12 -based compounds is realized by substitution of scarce Co for Fe site. However, reduction necessary their potential practical applications. In this work, we successfully decrease concentration Co, from 17.3 at% to 8.7 while maintaining large μ 0 M s 1.41 T at 300 K Ti reduced Sm 0.8 Y 0.2 (Fe 0.9 0.1 ) 11.25 0.75 compound. addition, report highest bulk with = 1.49 T, H a 9.14 and c 831 K. We demonstrate (Sm )Fe exhibit superior intrinsic...
The magnetic and structural properties of bulk, ball-milled La(Co <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5-x</sub> Fe xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> ), La xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> (Co xmlns:xlink="http://www.w3.org/1999/xlink">7-x</sub> ) were studied. highest coercivity (1.08 T) was obtained at room temperature for LaCo xmlns:xlink="http://www.w3.org/1999/xlink">4.8</sub>...
A novel fused porphyrinoid undergoes supramolecular assembly to form a persistently porous solution processable material for sensing of acetone vapour under high humidity using membrane-type surface stress sensor.
The structural and magnetic properties of ball-milled Fe-doped Y Co5−xFex(0 ≤ x 0.5) were investigated. magnetization increases with Fe-doping up to the solid solubility limit, = 0.3 without destroying crystal structure or degrading coercivity. A special magnet array is designed using ring magnets for pressing powders under field in order achieve alignment. dramatic increase observed magnetically aligned Co4.8Fe0.2 pressed ingots.