Umbrella structure in Ho substituted YIG - NMR study |
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| Authors: | J Englich H Lütgemeier MW Pieper KFA Jülich W Germany V Nekvasil P Novák |
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| Institution: | Fac. of Mathematics and Physics, Charles University, Prague, Czechoslovakia;Institut of Physics, Czechoslovak Acad. Sci., Prague, Czechoslovakia |
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| Abstract: | The NMR of 57Fe in Ho: YIG and Gd: YIG was measured on polycrystalline samples at 4.2 and 77K. In spectra of both tetrahedral and octahedral Fe3+ ions satellite lines appear which were ascribed to Fe3+ with a rare earth ion in their vicinity. From the position of the satellites the magnitude and direction of the Ho3+ magnetic moment were deduced. The results for Ho3+ ion are in good agreement with the crystal field calculations and with other magnetic data, but disagree with the neutron scattering results in HoIG garnet. The results on Gd: YIG were used to check the correctness of the analysis. |
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