| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nordlund, Kai
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (54/54 displayed)
- 2024Solubility of Hydrogen in a WMoTaNbV High-Entropy Alloycitations
- 2024Effect of lattice voids on Rutherford backscattering dechanneling in tungstencitations
- 2024Effect of radiation defects on the early stages of nanoindentation tests in bcc Fe and Fe-Cr alloyscitations
- 2024Unveiling the radiation-induced defect production and damage evolution in tungsten using multi-energy Rutherford backscattering spectroscopy in channeling configurationcitations
- 2023Comprehensive structural changes in nanoscale-deformed silicon modelled with an integrated atomic potentialcitations
- 2023Comprehensive structural changes in nanoscale-deformed silicon modelled with an integrated atomic potentialcitations
- 2022Simple machine-learned interatomic potentials for complex alloyscitations
- 2022Effect of radiation defects on the early stages of nanoindentation tests in bcc Fe and Fe-Cr alloyscitations
- 2021Temperature effect on irradiation damage in equiatomic multi-component alloyscitations
- 2021Origin of increased helium density inside bubbles in Ni(1-x)Fex alloyscitations
- 2021Nano-vault architecture mitigates stress in silicon-based anodes for lithium-ion batteriescitations
- 2021Modeling refractory high-entropy alloys with efficient machine-learned interatomic potentialscitations
- 2021Modeling refractory high-entropy alloys with efficient machine-learned interatomic potentials : Defects and segregationcitations
- 2021Machine-learning interatomic potential for W-Mo alloyscitations
- 2020Segregation of Ni at early stages of radiation damage in NiCoFeCr solid solution alloyscitations
- 2020Insights into the primary radiation damage of silicon by a machine learning interatomic potentialcitations
- 2019Local segregation versus irradiation effects in high-entropy alloys : Steady-state conditions in a driven systemcitations
- 2019Absence of single critical dose for the amorphization of quartz under ion irradiationcitations
- 2019Structural properties of protective diamond-like-carbon thin films grown on multilayer graphenecitations
- 2019Cascade overlap with vacancy-type defects in Fecitations
- 2019Radiation stability of nanocrystalline single-phase multicomponent alloyscitations
- 2018Absence of single critical dose for the amorphization of quartz under ion irradiationcitations
- 2018A model of defect cluster creation in fragmented cascades in metals based on morphological analysiscitations
- 2018Effects of precipitates and dislocation loops on the yield stress of irradiated ironcitations
- 2018Defect structures and statistics in overlapping cascade damage in fusion-relevant bcc metalscitations
- 2018Vaporlike phase of amorphous SiO2 is not a prerequisite for the core/shell ion tracks or ion shapingcitations
- 2017Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopycitations
- 2017Atomic-level heterogeneity and defect dynamics in concentrated solid-solution alloyscitations
- 2017Local segregation versus irradiation effects in high-entropy alloyscitations
- 2017Thermal Oxidation of Size-Selected Pd Nanoparticles Supported on CuO Nanowirescitations
- 2016Interatomic Fe-H potential for irradiation and embrittlement simulationscitations
- 2016Ru/Al Multilayers Integrate Maximum Energy Density and Ductility for Reactive Materialscitations
- 2016Optimizing the sputter deposition process of polymers for the Storing Matter technique using PMMAcitations
- 2016Dependence of short and intermediate-range order on preparation in experimental and modeled pure a-Sicitations
- 2015The as-deposited structure of co-sputtered Cu-Ta alloys, studied by X-ray diffraction and molecular dynamics simulationscitations
- 2015Molecular dynamics investigation of the interaction of dislocations with carbides in BCC Fecitations
- 2015Surface segregation in chromium-doped NiCr alloy nanoparticles and its effect on their magnetic behaviorcitations
- 2015Ion-solid interactions at the extremes of electronic energy losscitations
- 2015Modification of Pt/Co/Pt film properties by ion irradiationcitations
- 2014Experimental and Numerical Study of Submonolayer Sputter Deposition of Polystyrene Fragments on Silver for the Storing Matter Techniquecitations
- 2014Effect of ion irradiation on structural properties of Cu64Zr36 metallic glasscitations
- 2013Radiation effects in nuclear materialscitations
- 2009From multiply twinned to fcc nanoparticles via irradiation-induced transient amorphizationcitations
- 2009Fast three dimensional migration of He clusters in bcc Fe and Fe-Cr alloyscitations
- 2009Modeling of film growth by cluster depositioncitations
- 2009Low energy cluster deposition of nanoalloyscitations
- 2009Amorphization of Ge nanocrystals embedded in amorphous silica under ion irradiationcitations
- 2008Atomistic simulation of the interface structure of Si nanocrystals embedded in amorphous silicacitations
- 2007Hydrocarbon radicals interaction with amorphous carbon surfacescitations
- 2007Radiation damage in WC studied with MD simulationscitations
- 2006Swift chemical sputtering of covalently bonded materialscitations
- 2006Energetics, structure, and long-range interaction of vacancy-type defects in carbon nanotubescitations
- 2006Ultrafast dynamics of Ni+-irradiated and annealed GaInAs/InP multiple quantum wellscitations
- 2006H, He, Ne, Ar-bombardment of amorphous hydrocarbon structurescitations
Places of action
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article
Modification of Pt/Co/Pt film properties by ion irradiation
Abstract
<p>We studied the structural modifications of a Pt/Co/Pt trilayer epitaxial film under Ga+ 30-keV ion irradiation by means of classical molecular dynamics and Monte Carlo simulations. The semiclassical tight-binding second-moment approximation potential was adjusted to reproduce the enthalpies of formation, the lattice constants, and the order-disorder transition temperatures for Co-Pt alloys. We found that during irradiation, the sandwich-type Pt(fcc)/Co(hcp)/Pt(fcc) film structure underwent a transition to the newsolid solution alpha-Co/Pt(fcc) phase. Our analysis of the short-range order indicates the formation, within a nanosecond time scale, of a homogeneous chemically disordered solution. The longer time-scale simulations employing a Monte Carlo algorithm demonstrated that the transition from the disordered phase to the ordered L1(0) and L1(2) phases was also possible but not significant for the changes in perpendicularmagnetic anisotropy (PMA) observed experimentally. The strain analysis showed that the Co layer was under tensile strain in the lateral direction at the fluences of 1.5 x 10(14)-3.5 x 10(14) ions cm(-2); this range of fluences corresponds to the appearance of PMA. This strain was induced in the initially relaxed hcp Co layer due to its partial transformation to the fcc phase and to the influence of atomic layers with larger lattice constants at upper/lower interfaces.</p>