Heavy ion irradiation effects inc-axis oriented thin films of YBa2(Cu0.97 57Fe0.03)3O7 studied by CEMS
作者： J. Dengler , G. Errmann , N. Kaner , G. Ritter , B. Hensel
DOI: 10.1007/BF02397478
关键词: Irradiation 、 Quadrupole 、 Spectroscopy 、 Ion 、 Atomic physics 、 Substrate (electronics) 、 Hyperfine structure 、 Materials science 、 Thin film 、 Debye–Waller factor 、 Physical and Theoretical Chemistry 、 Nuclear and High Energy Physics 、 Atomic and Molecular Physics, and Optics 、 Condensed matter physics
摘要: Fullyc-axis oriented thin films of YBa2 (Cu0.9757Fe0.03)3O7 on SrTiO3 substrate were irradiated with different fluences ϕ 500 MeV127I parallel to thec-axis. The samples investigated by means x-ray diffraction, resistiveTc measurements and conversion electron Mosbauer spectroscopy (CEMS). Irradiation results in the appearance a fourth quadrupole doubletE CEMS-spectra (EQ=1.1 mm/s, IS=0.26 mm/s), whose intensity increases increasing ϕ. Debye Waller factor new Fe-speciesE is only about 60% that speciesA, B, andC proving irradiation high energy heavy ions latent tracks lower density. from hyperfine parameters speciesE we conclude are mainly formed “green phase” Y2BaCuO5. We derived radius be 26 A.
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