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Simulation of Positron Annihilation Response to Mechanical Deformation of Nanostructured AgCo

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Melikhova O., Kuriplach J., Čížek J., Procházka I., Hou M., Pisov S., Zhurkin E.
Acta Physica Polonica A
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2008
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vol. 113
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issue 5
1455-1464
EN
Nanostructured materials attract nowadays a broad attention due to their specific properties. Defects play an essential role in material properties so their characterisation is very important. The evolution of the various open volume defects in AgCo nanowire modelled samples obtained using molecular dynamics was studied. Isothermal and isoenergetic deformation mechanisms are considered. General analyses of open volume defects concerning their size and their chemical environment were performed. Positron lifetimes, binding energies, and high momentum parts of the momentum distribution of annihilationγ-quanta were calculated for selected defects.
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