| Autor: |
Suvorova, Elena I., Uvarov, Oleg V., Ovcharov, Alexey V., Karateev, Igor A., Vasiliev, Alexandr L., Skuratov, Vladimir A., Buffat, Philippe A. |
| Předmět: |
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| Zdroj: |
Philosophical Magazine; Dec2018, Vol. 98 Issue 35, p3127-3142, 16p |
| Abstrakt: |
The response of Y2O3 nanoprecipitates in a 1-µm YBa2Cu3O7-x layer from a superconducting wire Ag/YBCO/buffer metal oxides/Hastelloy to 107 MeV Kr and 167 MeV Xe ion irradiation was investigated using a combination of transmission electron microscopy, diffraction and X-ray energy-dispersive spectrometry. The direct observation of the radiation-induced tracks in Y2O3 nanocrystals is reported for the first time to the authors’ best knowledge. Structureless damaged regions of 5-9 nm (average 8 nm) in diameter were observed in Y2O3 nanocrystals when the electronic stopping power Se was about or higher than 4.7 keV/nm. This value of Se is the upper estimate of the minimum electronic stopping power to create damage in yttria nanocrystals. The electron diffraction patterns, high-resolution transmission electron microscopy, high-resolution scanning transmission electron microscopy, Fourier transform patterns from areas extending a few nanometres around the tracks show that yttria and YBCO keep their respective cubic and orthorhombic pristine structures. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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