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1997 | 92 | 1 | 173-176
Article title

Electron Spin Resonance Spectra of Fe^{3+} Ions in SrLaAlO_{4} and SrLaGaO_{4} High-T_{c} Substrates

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EN
Abstracts
EN
New results concerning paramagnetic defects in SrLaAlO_{4} and SrLaGaO_{4} high-T_{c} substrates connected with unavoidable impurity Fe^{3+} are reported. The identification was checked by measuring the spectra in SrLaAlO_{4} crystals intentionally doped with 0.5 at.% Fe. Angular dependences of three lines were distinguished at X-band frequency in the temperature range from 4 K to 300 K. We attribute these lines to the transitions inside the doublets ±1/2, and "forbidden" doublets ±3/2, ±5/2, respectively. By diagonalization of spin-Hamiltonian, parameters |D| > 1.2 cm^{-1}, |E| ≈ 0.1 cm^{-1} and g_{x}=g_{y}=g_{z}= 1.987(13) for SrLaAlO_{4} and SrLaGaO_{4} were calculated and within the margin of error they were of the same value.
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EN
Contributors
  • Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
  • Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
  • Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 00-668 Warsaw, Poland
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv92z120kz
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