The Simulation and Interpretation of the EPR Powder Spectra of Gd3+-Doped LaAlO3

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Koopmans, H.J.A. and Perik, M.M.A. and Nieuwenhuijse, B. and Gellings, P.J. (1984) The Simulation and Interpretation of the EPR Powder Spectra of Gd3+-Doped LaAlO3. Physica Status Solidi B: Basic research, 122 (1). pp. 317-330. ISSN 0370-1972

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Abstract:The EPR powder spectra of Gd3+ doped LaAlO3 are simulated for a number of temperatures between 4 and 800 K by means of the usual spin-Hamiltonian. Values are found for the zero field splitting parameters B(n, 0) only, which agree with single crystal measurements. For an accurate simulation of the axial powder spectra a variable linewidth has to be introduced, because an inhomogeneous broadening of the resonances in the xy plane is observed. This broadening is successfully described by a variable B(2, 2) parameter. This indicates that the Gd3+ ion does not fit within the LaAlO3 lattice, because GdAlO3 is not isostructural with LaAlO3. Crystal field calculations support this assumption.
Item Type:Article
Copyright:© 1984 Wiley InterScience
Link to this item:http://purl.utwente.nl/publications/70715
Official URL:http://dx.doi.org/10.1002/pssb.2221220137
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