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Article << Previous     |     Next >>   Contents Vol 51(2)

Dependence of 57Fe Hyperfine Field in Yttrium Iron Garnet on Ionic Radius of Diamagnetic Defects: NMR Study

H. Štepánková, J. Kohout, P. Novák, J. Englich, E.-G. Caspary and H. Lütgemeier

Australian Journal of Physics 51(2) 437 - 452
Published: 1998

Abstract

Satellite structure in 57Fe NMR spectra of In3+ , Sc3+ , Ga3+ and Al3+ substituted yttrium iron garnets (YIG) was analysed taking into account results previously obtained for ‘antisit’ defects (Y3+ ions on Fe3+ sites) in nominally pure YIG. The influences of the diamagnetic substitution on the hyperfine field at the neighbouring iron nuclei were found to be remarkably dependent on the ionic radius of the substituent. In the case of two substituents in the vicinity of the resonating iron, an additivity of their effects within a 15% tolerance interval was verified.



Full text doi:10.1071/P97051

© CSIRO 1998

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