Temperature dependence of57Fe hyperfine field in Gd: YIG |
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Authors: | J. Englich P. Novák J. Kuriplach H. Lütgemeier |
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Affiliation: | 1. Faculty of Mathematics and Physics, Charles University, V Hole?ovi?kách 2, 180 00, Prague 8, Czechoslovakia 2. Institute of Physics CSAV, Na Slovance 2, 180 40, Prague 8, Czechoslovakia 3. Institut für Festk?rperforschung KFA, D-5170, Jülich, FRG
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Abstract: | The NMR spectra of57Fe in Gd: YTG polyeryslallaline samples were measured between liquid-helium and room temperatures. In spectra of57Fe on tetrahedral sites, beside the main line, weaker and broader peak at higher frequencies appears. It can be decomposed in to the three satellites corresponding to Fe3+ ion with one Gd3+ ion in the nearest (two satellites) and next nearest dodecahedral site. The temperature dependence of the stellite resonance frequency indicates, that the part of the transferred hyperfine field on57Fe with the Gd3+ in the nearest c-site depends on the magnetic moment of Gd3+ ion. The resonance frequency of the satellite corresponding to the57Fe with Gd3+ in the next nearest c-site follows the temperature dependence of the dipolar field, the change of the transferred field is small. |
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