Abstract
The paramagnetic resonance of Gd in YAl2 was measured in the temperature range from 5 °K to 70 °K. The experimental results are discussed with Hasegawa's theory. The dependence of linewidth on temperature and Gd-concentration indicates the existence of a “bottleneck” in the relaxation between the conduction electrons and the lattice. If nonmagnetic thorium impurities are added an additional relaxation becomes effective, caused by spin-flip scattering of the conduction electrons at these impurities. In this case the bottleneck is removed.
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The EPR work performed in Darmstadt is a project of the “Sonderforschungsbereich Festkörperspektroskopie Darmstadt/Frankfurt”, financed by the Deutsche Forschungsgemeinschaft.
Darmstädter Dissertation (D 17).
The authors are indebted to U. Engel for performing part of the EPR-experiments and to T. Plefka for helpful discussions.
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Schäfer, W., Schmidt, H.K., Elschner, B. et al. Paramagnetic resonance of gadolinium in intermetallic compounds YAl2 and Y1−w Th w Al2 . Z. Physik 254, 1–9 (1972). https://doi.org/10.1007/BF01379685
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DOI: https://doi.org/10.1007/BF01379685