Abstract
Since the discovery of the Kondo effect a large number of experimental works have advanced the understanding of the static magnetic properties of dilute alloys of d elements in noble metal matrices.† The situation regarding dynamic susceptibilities is quite different. Due to the so-called “bottleneck” of relaxation,3 direct EPR measurements seem to be unable to distinguish the relaxation effects associated with the s-d coupling.4 Relaxation effects are also involved in Mössbauer spectra,5 but these are still difficult to understand. The host nuclear spins sense both static and fluctuating local fields associated with the impurity. This has long been known to yield a broadening of the host NMR line, while the nuclear spin—lattice relaxation timeT 1 is shortened.6,7 Though data on the impurity contribution to T 1 −1 are available in dilute alloys,9–14 no real understanding has yet been achieved.
Associated with CNRS.
See Ref. 1 for theoretical review, Ref. 2 for experimental review.
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© 1974 Plenum Press, New York
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Alloul, H., Bernier, P. (1974). Electron Spin Relaxation through Matrix NMR in Dilute Magnetic Alloys. In: Timmerhaus, K.D., O’Sullivan, W.J., Hammel, E.F. (eds) Low Temperature Physics-LT 13. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-4520-6_71
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DOI: https://doi.org/10.1007/978-1-4613-4520-6_71
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