| 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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Björkman, Torbjörn
Åbo Akademi University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2024Role of pressure-induced stacking faults on the magnetic properties of gadolinium
- 2021Ab initio study of properties of Co- and Cu- doped Ni-Mn-Ga alloys ; Ab initio studium vlastností slitiny Ni-Mn-Ga dopované Co a Cucitations
- 2015Ab initio study of properties of Co- and Cu- doped Ni-Mn-Ga alloyscitations
- 2013Defects in bilayer silica and graphene: common trends in diverse hexagonal two-dimensional systemscitations
- 2011CIF2Cell: Generating geometries for electronic structure programscitations
Places of action
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conferencepaper
Ab initio study of properties of Co- and Cu- doped Ni-Mn-Ga alloys ; Ab initio studium vlastností slitiny Ni-Mn-Ga dopované Co a Cu
Abstract
The influence of Co and Cu doping on Ni-Mn-Ga alloy is investigated using the first-principles exact muffin-tin orbital method in combination with the coherent-potential approximation. The energy difference between the austenite (A) and the nonmodulated (NM) martensite E_A-NM depends linearly on the Cu concentration and distribution, with a minimum for all Cu at Mn sites and a maximum for all Cu at Ga sites. For alloys simultaneously doped by Co in Ni sublattice and Cu in Mn or Ga sublattice, the effects of the individual dopants on E_A-NM and (c/a)_NM and are almost independent. The alloy with composition Ni46Co4Mn24Ga22Cu4 exhibits decreased equilibrium (c/a)_NM and increased E_A-NM in comparison with Ni50Mn25Ga25, which is in agreement with the previous experimental results. ; Vliv Co a Cu dopování na Ni-Mn-Ga slitinu je studován pomocí výpočtů z prvních principů metodou exaktních muffin-tin orbitalů (EMTO) v kombinaci s aproximací koherentního-potenciálu (CPA). Energetický rozdíl mezi austenitem (A) a nemodulovaným (NM) martenzitem E_A-NM závisí lineárně na koncentraci a distribuci Cu, s minimem pro všechny Cu aomy v Mn podmřížce a maximem pro všechny Cu v Ga podmřížce. U slitin současně dopovaných i Co v Ni podmřížce a Cu v Mn nebo Ga podmřížce jsou účinky jednotlivých příměsí na E_A-NM a (c/a) _NM téměř nezávislé. Slitina s složení Ni46Co4Mn24Ga22Cu4 vykazuje menší rovnovážnný tetrafonální poměr (c/a)_NM a větší E_A-NM ve srovnání se slitinou Ni50Mn25Ga25, což je v souladu s předchozími experimentálními výsledky.