| Autor: |
Dengler, J., Errmann, G., Kaner, N., Ritter, G., Hensel, B., Kraus, M., Kreiselmeyer, G., Saemann-Ischenko, G., Klaumünzer, S., Roas, B. |
| Zdroj: |
Hyperfine Interactions; April 1992, Vol. 70 Issue: 1-4 p921-925, 5p |
| Abstrakt: |
Abstract: Fullyc-axis oriented thin films of YBa2 (Cu0.9757Fe0.03)3O7 on <100> SrTiO3 substrate were irradiated with different fluences ϕ of 500 MeV127I parallel to thec-axis. The samples were investigated by means of x-ray diffraction, resistiveT c measurements and conversion electron Mbauer spectroscopy (CEMS). Irradiation results in the appearance of a fourth quadrupole doubletE in the CEMS-spectra (E Q=1.1 mm/s, IS=0.26 mm/s), whose intensity increases with increasing ϕ. The Debye Waller factor of the new Fe-speciesE is only about 60% of that of the speciesA, B, andC proving that irradiation with high energy heavy ions results in latent tracks of lower density. from the hyperfine parameters of speciesE we conclude that the latent tracks are mainly formed by the “green phase” Y2BaCuO5. We derived the radius of the latent tracks to be about 26 . |
| Databáze: |
Supplemental Index |
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