A5066836530- MXene and MAX Phase Materials
- Metal and Thin Film Mechanics
- Semiconductor materials and devices
- 2D Materials and Applications
- Copper Interconnects and Reliability
- Ferroelectric and Negative Capacitance Devices
- Electrocatalysts for Energy Conversion
- Aluminum Alloys Composites Properties
- Boron and Carbon Nanomaterials Research
- Fuel Cells and Related Materials
- Hydrogen Storage and Materials
- Ammonia Synthesis and Nitrogen Reduction
- ZnO doping and properties
- Advanced Memory and Neural Computing
- Gold and Silver Nanoparticles Synthesis and Applications
- GaN-based semiconductor devices and materials
- Graphene research and applications
- Metallic Glasses and Amorphous Alloys
- Transition Metal Oxide Nanomaterials
- Advanced battery technologies research
- Magnesium Alloys: Properties and Applications
- Surface and Thin Film Phenomena
- Advancements in Battery Materials
- Advanced materials and composites
- Electronic and Structural Properties of Oxides
Thinfilm (Sweden)
2011-2020
Linköping University
2011-2020
University of Iceland
2005-2020
Technical University of Darmstadt
2017
Immanuel Kant Baltic Federal University
2017
The first experimental realization of a magnetic ${M}_{n+1}A{X}_{n}$ (MAX) phase, $({\mathrm{Cr}}_{0.75}{\mathrm{Mn}}_{0.25}{)}_{2}\mathrm{GeC}$, is presented, synthesized as heteroepitaxial single crystal thin film, exhibiting excellent structural quality. This self-organized atomic laminate based on the well-known ${\mathrm{Cr}}_{2}\mathrm{GeC}$, with Mn, new element in MAX phase research, substituting Cr. compound was predicted using first-principles calculations, from which variety...
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Electrochemical water splitting into H2 and O2 presents a significant challenging energy loss due to the high overpotential required at anode. Today, in industrially relevant applications, dimensionally stable anodes (DSA) based on electrocatalytic active RuO2 are conventionally utilized. To enhance resistance against corrosion, incorporation of TiO2 RuO2-coated electrodes is widely employed. In present work we have used scanning electrochemical microscopy (SECM) demonstrate that TiO2-doped...
Abstract (Cr 1– x Mn ) 2 AlC MAX phase thin films were synthesized by cathodic arc deposition. Scanning transmission electron microscopy including local energy dispersive X‐ray spectroscopy analysis of the as‐deposited reveals a incorporation as much 10 at% in structure, corresponding to = 0.2. Magnetic properties characterized with vibrating sample magnetometry, revealing magnetic response up at least room temperature. We thus verify previous theoretical predictions an antiferromagnetic or...
Abstract Fabrication of continuous ultra-thin gold films (<10 nm) on the surface optical polymers (CYCLOTENE and ORMOCLEAR) is reported. Using a range electrical, structural characterization techniques, we show that can be superior to more conventional (inorganic) materials as substrates for realizing films. these transparent polymer substrates, smooth, patternable fabricated with deposition techniques at room temperature, without adhesion or seeding layers, facilitating new photonic...
The catalytic and durable electrode coating of ruthenium dioxide (RuO2), applied on nickel (Ni) substrates, is today utilized as electrocatalytic cathodes for hydrogen production, e.g., in the chlor-alkali process alkaline water electrolysis. drawback is, however, sensitivity to reverse currents obtained during power shutdowns, at maintenance, where RuO2-based electrodes can be severely damaged unless polarization rectifiers are employed. Through material characterization techniques X-ray...
Inherently layered magnetic materials, such as ${M}_{n+1}A{X}_{n}$ (MAX) phases, offer an intriguing perspective for use in spintronics applications and ideal model systems fundamental studies of complex phenomena. The MAX phase composition ${{M}_{n}}_{+1}A{X}_{n}$ consists ${M}_{n+1}{X}_{n}$ blocks separated by atomically thin $A$-layers where $M$ is a transition metal, $A$ A-group element, $X$ refers to carbon and/or nitrogen, $n$ typically 1, 2, or 3. Here, we show that the recently...
In 2013, a new class of inherently nanolaminated magnetic materials, the so called MAX phases, was discovered. Following predictive material stability calculations, hexagonal Mn2GaC compound synthesized as hetero-epitaxial films containing Mn exclusive M-element. Recent theoretical and experimental studies suggested high ordering temperature non-collinear antiferromagnetic (AFM) spin states result competitive ferromagnetic exchange interactions. order to assess potential for practical...
DC arc plasma from Ti, Al, and Ti1-xAlx (x = 0.16, 0.25, 0.50, 0.70) compound cathodes was characterized with respect to chemistry charge-state-resolved ion energy. Scanning electron microscopy, X-ray diffraction, Energy-dispersive spectroscopy of the deposited films cathode surfaces were used for exploring correlation between cathode-, plasma-, film composition. Experimental work performed at a base pressure 10−6 Torr, exclude plasma-gas interaction. The composition showed reduction Al...
We present synthesis and characterization of a new magnetic atomic laminate: (Mo0.5Mn0.5)2GaC. High quality crystalline films were synthesized on MgO(111) substrates at temperature ∼530 °C. The display response, evaluated by vibrating sample magnetometry, in range 3-300 K field up to 5 T. response ranges from ferromagnetic paramagnetic with change temperature, an acquired 5T-moment remanent moment 3 0.66 0.35 μB per metal atom (Mo Mn), respectively. the coercive (0.06 T) exceed all values...
Magnetic MAX phase (Cr0.5Mn0.5)2GaC thin films grown epitaxially on MgO(111) substrates were studied by ferromagnetic resonance at temperatures between 110 and 300 K. The spectroscopic splitting factor g = 2.00 ± 0.01 measured all indicates pure spin magnetism in the sample. At we find magnetocrystalline anisotropy energy to be negligible which is agreement with identified magnetism.
Prompted by the increased focus on MAX phase materials and their two-dimensional counterparts MXenes, a brief review of current state affairs in synthesis phases as epitaxial thin films is given. Current methods for are discussed suggestions given how to increase material quality even further well arrive at those conditions faster. Samples were prepared exemplify most common issues involved with synthesis, through suggested paths resolving these we attain samples beyond what has previously...
The magnetic properties of hexagonal (Mo0.5Mn0.5)2GaC MAX phase synthesized as epitaxial films on MgO (111) substrates with the c-axis perpendicular to film plane are presented. analysis temperature-dependent ferromagnetic resonance (FMR) and magnetometry data reveals a ferro- paramagnetic transition at 220 K. electrical transport measurements 5 K show negative magnetoresistance 6% in field 9 T. Further confirms spin-dependent scattering charge carriers this layered material. A small...
Abstract Ab‐initio calculations have been used to investigate the phase stability and magnetic state of Cr n+ 1 GaC n MAX phase. 2 ( = 1) was predicted be stable, with a ground corresponding an antiferromagnetic spin configuration. Thin‐film synthesis by magnetron sputtering from elemental targets, including liquid Ga, shows formation GaC, previously only attained bulk methods. The films were deposited at 650 °C on MgO(111) substrates. X‐ray diffraction high‐resolution transmission electron...
TiN films have been grown on <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\hbox{SiO}_{2}$</tex></formula> by reactive high-power impulse magnetron sputtering (HiPIMS) at temperatures of 22 Notation="TeX">$^{\circ} \hbox{C}$</tex></formula> –600 Notation="TeX">$^{\circ}\hbox{C}$</tex></formula> . The film resistance is monitored in situ to determine the coalescence and continuity thicknesses that...