A5038479030- Magnetic properties of thin films
- Magnetic Properties and Synthesis of Ferrites
- Characterization and Applications of Magnetic Nanoparticles
- ZnO doping and properties
- Multiferroics and related materials
- Magnetic Properties and Applications
- Electron and X-Ray Spectroscopy Techniques
- Surface and Thin Film Phenomena
- Advanced X-ray Imaging Techniques
- Copper-based nanomaterials and applications
- Geomagnetism and Paleomagnetism Studies
- Magnetic Properties of Alloys
- Acoustic Wave Resonator Technologies
- Adhesion, Friction, and Surface Interactions
- Theoretical and Computational Physics
- Superconducting Materials and Applications
- Non-Destructive Testing Techniques
- Iron oxide chemistry and applications
- Magnetic and Electromagnetic Effects
- Catalytic Processes in Materials Science
- Advanced Materials Characterization Techniques
- Archaeological and Geological Studies
- Aerosol Filtration and Electrostatic Precipitation
- Quantum and electron transport phenomena
- Transition Metal Oxide Nanomaterials
SOLARIS National Synchrotron Radiation Centre
2022-2024
Jagiellonian University
2022-2024
ALBA Synchrotron (Spain)
2018-2023
Instituto de Química Física Blas Cabrera
2018-2023
Synchrotron soleil
2022-2023
FC Barcelona
2020
Maria Curie-Skłodowska University
2017
Abstract The SOLARIS synchrotron located in Krakow, Poland, is a third-generation light source operating at medium electron energy. first was observed 2015, and the consequent development of infrastructure lead to users’ experiments soft X-ray energies 2018. Presently, expands its operation towards hard X-rays with continuous developments beamlines concurrent infrastructure. In following, we will summarize design, describe research together main performance parameters, upgrade, plans.
Using hybrid piezoelectric-magnetic systems we have generated large amplitude magnetization waves mediated by magnetoelasticity with up to 25 degrees variation in the orientation. We present direct imaging and quantification of both standing propagating acoustomagnetic different wavelengths, over distances several millimeters a nickel thin film.Received 2 January 2020Accepted 5 March 2020DOI:https://doi.org/10.1103/PhysRevLett.124.137202© 2020 American Physical SocietyPhysics Subject...
Abstract Platelets of strontium hexaferrite (SrFe 12 O 19 , SFO), up to several micrometers in width, and tens nanometers thick have been synthesized by a hydrothermal method. They studied combination structural magnetic techniques, with emphasis on Mössbauer spectroscopy X-ray absorption based-measurements including microscopy the iron-L edges oxygen-K edge, allowing us establish differences similarities between our nanostructures commercial powders. The spectra reveal greater contribution...
To study the synergy between transition metals for enhancing electrochemical and chemical activity, a series of SOECs were modified with small amount Co ions, namely 1.8, 3.6, 5.4 wt% in reduced state. The addition βCD into precursor solution allowed extremely fine dispersion species across Ni-YSZ cermet structure. sample containing 3.6 reached an outstanding over 2.5-times-higher concentration CH4 outlet stream. At same time, greatly enhanced efficiency water CO2 co-electrolysis. Full...
Abstract We demonstrate the preparation of ultrathin Fe-rich nickel ferrite (NFO) islands on a metal substrate. Their nucleation and growth are followed in situ by low-energy electron microscopy (LEEM). A comprehensive characterization is performed combining LEEM for structural PEEM (PhotoEmission Electron Microscopy) with synchrotron radiation chemical magnetic analysis via X-ray Absorption Spectroscopy Magnetic Circular Dichroism (XAS-PEEM XMCD-PEEM, respectively). The oxygen-assisted...
Abstract We report on the magnetic properties of antiferromagnetic NiO(001) thin films in epitaxially grown NiO/MgO( d MgO )/Cr/MgO(001) system for different thicknesses MgO, . Results X-ray Magnetic Linear Dichroism show that together with an increase , rotation NiO spins from in-plane towards out-of-plane direction occurs. Furthermore, we investigated how proximity Fe modifies state Fe/NiO/MgO( )/Cr/MgO(001). proved existence a multidomain as result competition between...
We show that it is possible to tune the N\'eel temperature of nickel(II)-cobalt(II) oxide films by changing Ni Co ratio. grow single crystalline micrometric triangular islands with tens nanometers thickness on a Ru(0001) substrate using high oxygen-assisted molecular beam epitaxy. Composition controlled adjusting deposition rates and Ni. The morphology, shape, crystal structure composition are determined low-energy electron microscopy diffraction, synchrotron-based x-ray absorption...
Abstract The magnetic properties of Co(10 Å)/NiO(40 Å)/Fe trilayer epitaxially grown on W(110) substrate were investigated with use x-ray linear dichroism (XMLD) and circular (XMCD). We showed that anisotropy Fe film can be controlled by a thickness-driven spin reorientation transition is transferred via interfacial exchange coupling not only to NiO layer but further ferromagnetic Co overlayer as well. Similarly, temperature driven sublayer induces orientation simultaneous switching the...
A detailed correlative structural, magnetic and chemical analysis of non-stoichiometric cobalt ferrite micrometric crystals was performed by x-ray circular dichroism combined with photoemission microscopy, low energy electron atomic force microscopy. The vector magnetization at the nanoscale is obtained from images different incidence angles compared micromagnetic simulations, revealing presence defects which pin domain walls. comparison types walls location suggests that main source pinning...
The quantification of surface acoustic waves (SAWs) in LiNbO 3 piezoelectric crystals by stroboscopic X-ray photoemission electron microscopy (XPEEM), with a temporal smearing below 80 ps and spatial resolution 100 nm, is reported. contrast mechanism the varying potential associated SAW phase. Thus, kinetic energy spectra photoemitted secondary electrons measure directly electrical amplitude allow for strain. imaging combined deliberate detuning allows resolving quantifying respective...
Magnetoelastic effects in antiferromagnetic CuMnAs are investigated by applying dynamic strain the 0.01% range through surface acoustic waves GaAs substrate. The magnetic state of CuMnAs/GaAs is characterized a multitude submicron-sized domains, which we image x-ray linear dichroism combined with photoemission electron microscopy. Within explored range, shows magnetoelastic form N\'eel vector micrometer wavelength, corresponds to an averaged overall spin-axis rotation up...
We present a spatially resolved X-ray magnetic dichroism study of high-quality, <italic>in situ</italic> grown nickel oxide films.
SrFe12O19 (SFO) films grown on Si (100) substrates by radio-frequency magnetron sputtering have been characterized in terms of composition, structural and magnetic properties a combination microscopy, diffraction spectroscopy techniques. Mössbauer was used to determine the orientation magnetization, which found be controlled both power thickness films. Additionally, coupling between SFO deposited cobalt overlayer studied means synchrotron-based spectromicroscopy A at SFO/Co interface is...
The growth of mixed cobalt-iron oxides on Ru(0001) by high-temperature oxygen-assisted molecular beam epitaxy has been monitored in real time and space x-ray absorption photoemission microscopy. initial composition is a Fe–Co(II) oxide wetting layer, reflecting the ratio deposited materials. However, as subsequent three dimensional spinel islands nucleating this layer takes place, changes iron transferred into islands. themselves also during growth.
Composites of magnetically hard and soft phases are present in multiple diverse applications, ranging from bulk permanent magnets motors generators to state-of-the-art recording media devices. The nature the magnetic coupling between is great technological relevance, as macroscopic properties functional composite material ultimately depend on atomic-scale interactions phases. In this work, hard/soft bilayer system SrFe12O19/Co has been studied based photoemission electron microscopy combined...
An odd-symmetry magnetic response of multiferroic composites comprising ultrathin Co layers on Pt electrodes [Pb(Mg0.33Nb0.67))3](1-x)[PbTiO3]x (PMN-PT) (011) piezoelectric substrates is observed upon electrical poling the PMN-PT substrates: The easy axis rotates by 90 degrees inplane between oppositely poled ferroelectric states, mimicking signature a surface polarization charge driven effect, which however can be excluded from presence thick interlayer.The origin for this unexpected...
We report on the response of magnetic domains in thin magnetite microstructures to weak external fields. Magnetite islands were grown by high-temperature oxygen-assisted molecular beam epitaxy Ru(0001). The islands, micrometric wide and tens nanometers thick are high structural quality, each having been from a single nucleation center. Their domain structure is dominated shape anisotropy, i.e., they present Landau flux-closure configurations. situ have imaged directly means x-ray circular...
We present a spatially resolved X-ray magnetic linear dichroism study of high quality micron-sized mixed nickel-cobalt oxide (NCO) crystals. Ni <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</inf> Co xmlns:xlink="http://www.w3.org/1999/xlink">1−x</inf> O were prepared in-situ by high-temperature oxygen-assisted molecular beam epitaxy on Ru(0001) single crystal. To check the effect incorporating in cobalt films, three different composition...