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A significant problem associated with batteries is the rapid reduction of charge-storage capacity with increasing charge/discharge rate. For example, improving this rate-performance is required for fast-charging of car batteries.…

Nano/micro-scale mechanical properties of multiferroic materials can be controlled by the external magnetic or electric field due to the coupling interaction. For the first time, a modularized multi-field nanoindentation apparatus for…

Instrumentation and Detectors · Physics 2013-06-25 Hao Zhou , Yongmao Pei , Hu Huang , Hongwei Zhao , Faxin Li , Daining Fang

This study investigates the synthesis and luminescence behavior of $\mathrm{Ce_{x}La_{0.95-x}Tb_{0.05}F_{3}}$ nanoparticles with varying $\mathrm{Ce^{3+}}$ content. The materials were prepared via a wet chemical route and thermally annealed…

The nickel--carbon system has received increased attention over the past years due to the relevance of nickel as a catalyst for carbon nanotube and graphene growth, where Nickel carbide intermediates may be involved or carbide interface…

Materials Science · Physics 2017-02-01 Jeffrey Kelling , Peter Zahn , Jörg Schuster , Sibylle Gemming

Severe plastic deformation changes the microstructure and properties of steels, which may be favourable for their use in structural components of nuclear reactors. In this study, high-pressure torsion (HPT) was used to refine the grain…

We show that it is possible to tune the N\'eel temperature of nickel(II)-cobalt(II) oxide films by changing the Ni to Co ratio. We grow single crystalline micrometric triangular islands with tens of nanometers thickness on a Ru(0001)…

Nanometric inclusions filled with nitrogen, located adjacent to FenN (n = 3 or 4) nanocrystals within (Ga,Fe)N layers, are identified and characterized using scanning transmission electron microscopy (STEM) and electron energy-loss…

In this work we investigate the process of iron nitride (Fe-N) phase formation using 2 at.% Al or 2 at.% Ti as additives. The samples were prepared with a magnetron sputtering technique using different amount of nitrogen during the…

Materials Science · Physics 2012-09-25 Rachana Gupta , Akhil Tayal , Mukul Gupta , Ajay Gupta , M. Horisberger , J. Stahn

The need for advanced functional materials is expected to provide a boost in powder metallurgy, where the impurities on powder surfaces is incorporated as at grain boundary segregation. This paper has three aims. First, we analyze whether…

Materials Science · Physics 2021-03-15 Wilfried Wunderlich

Spin-resolved and temperature-dependent appearance-potential spectra of ferromagnetic Nickel are measured and analyzed theoretically. The Lander self-convolution model which relates the line shape to the unoccupied part of the local density…

Strongly Correlated Electrons · Physics 2009-11-07 M. Potthoff , T. Wegner , W. Nolting , T. Schlathölter , M. Vonbank , K. Ertl , J. Braun , M. Donath

The objective of this work was to study the RF sputtering process parameters optimisation for deposition of Silicon Nitride thin films. The process parameters chosen to be varied were deposition power, deposition duration, flow rate of…

Applied Physics · Physics 2017-11-29 Sachin S Bharadwaj , GR Rajkumar , B W Shivaraj , M Krishna

Nickel carbon nanotube composites with varying amounts of carbon nanotubes are deformed by high pressure torsion at different deformation temperatures to high strains, where no further refinement of the Nickel matrix microstructure is…

We fabricated NiFe2O thin films on MgAl2O4 (001) substrates by reactive dc magnetron co-sputtering in a pure oxygen atmosphere at different substrate temperatures. The film properties were investigated by various techniques with a focus on…

A promising approach to deform metallic-intermetallic composite materials is the application of electric current pulses during the deformation process to achieve a lower yield strength and enhanced elongation to fracture. This is known as…

Materials Science · Physics 2019-06-03 D. Andre , T. Burlet , F. Koerkemeyer , G. Gerstein , S. Sandloebes-Haut , S. Korte-Kerzel

It is presented some technological parameters and physical characteristics of Fe - Ni - Al composite materials, fabricated by pressing with following sintering at a high temperature, and also shock-wave compacted using explosives. The…

Iron-oxide nanoparticles have been synthesized by high temperature arc plasma route with different plasma currents and characterized for their structure, morphology and local atomic order. Fe K-edge x-ray absorption spectra reveal distinct…

Materials Science · Physics 2014-01-16 C. Balasubramanian , B. Joseph , P. Gupta , N. L. Saini , S. Mukherjee , D. Di Gioacchino , A. Marcelli

Transverse momentum spectra of charged particle production in heavy-ion collisions are considered in terms of a recently introduced Two Component parameterization combining exponential ("soft") and power-law ("hard") functional forms. The…

High Energy Physics - Phenomenology · Physics 2016-02-17 A. A. Bylinkin , N. S. Chernyavskaya , A. A. Rostovtsev

To reduce reliance on experimental fitting data within the crystal plasticity finite element method (CPFEM), an approached is proposed that integrates first-principles calculations based on density functional theory (DFT) to predict the…

Materials Science · Physics 2022-06-14 John D. Shimanek , Shipin Qin , Shun-Li Shang , Zi-Kui Liu , Allison M. Beese

A cluster deposition method was used to produce films of loosely aggregated nanoclusters (NC) of Fe core-Fe3O4 shell or fully oxidized Fe3O4. Films of these NC on Si(100) or MgO(100)/Fe3O4(100) were irradiated to 10^16 Si2+/cm2 near room…

A computational approach combining dispersion-corrected density functional theory (DFT) and classical molecular dynamics is employed to characterize the geometrical and thermo-mechanical properties of a recently proposed 2D transition metal…