Umbrella structure in Ho substituted YIG - NMR study

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 Fe 3+ ions satellite lines appear which were ascribed to Fe 3+ with a rare earth ion in their vicinity. From the position of the satellites the magnitude and d...

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Bibliographic Details
Published in:Solid state communications 1985-01, Vol.56 (9), p.825-828
Main Authors: Englich, J., Lütgemeier, H., Pieper, M.W., Jülich, K.F.A., Germany, W., Nekvasil, V., Novák, P.
Format: Article
Language:English
Subjects:
Chemical and knight shifts
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Nuclear magnetic resonance and relaxation
Physics
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Summary: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 Fe 3+ ions satellite lines appear which were ascribed to Fe 3+ with a rare earth ion in their vicinity. From the position of the satellites the magnitude and direction of the Ho 3+ magnetic moment were deduced. The results for Ho 3+ 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.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(85)90318-7