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2000 | 97 | 3 | 519-522
Article title

Hyperfine Field in YIG with Charged Substitution

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EN
Abstracts
EN
^{57}Fe NMR spectra were measured on thin films of yttrium iron garnet with divalent (Ca^{2+}) and tetravalent (Ge^{4+}) cation substitutions using the spin echo technique at 4.2 K. A series of Y_{3-x}Ca_{x}Fe_{5-x}Ge_{x}O_{12} samples with 0 ≤ x ≤ 0.0 5 was prepared by an epitaxial growth from BaO/B_{2}O_{3}/BaF_{2} flux on gadolinium gallium garnet substrate. Satellite lines corresponding to the iron ions having the Ge^{4+} and Ca^{2+} in their neighbourhood were identified. The sample with the germanium content of x(Ge) = 0.004 and (110) substrate orientation was used for a detailed study: NMR spectra of this sample were measured in an external magnetic field of 0.1 T applied along several directions in the plane of the film. The modification of the isotropic part and the anisotropy tensor of the hyperfine interaction caused by the Ge^{4+} substituent were obtained from the experimental data. The results were compared with those previously reported for trivalent substitution (Ga^{3+}).
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Contributors
author
  • Faculty of Mathematics and Physics, Charles University 180 00 Prague 8, V Holešovičkách 2, Czech Republic
  • Faculty of Mathematics and Physics, Charles University 180 00 Prague 8, V Holešovičkách 2, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University 180 00 Prague 8, V Holešovičkách 2, Czech Republic
author
  • Institute of Physics, Academy of Sciences Cukrovarnická 10, 16 253 Prague 6, Czech Republic
author
  • Faculty of Mathematics and Physics, Charles University 180 00 Prague 8, V Holešovičkách 2, Czech Republic
author
  • Institute of Physics, Academy of Sciences Cukrovarnická 10, 16 253 Prague 6, Czech Republic
References
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Publication order reference
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bwmeta1.element.bwnjournal-article-appv97z339kz
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