Electronic and diffusion-induced spin-lattice relaxation and the lattice expansion about interstitial12B in Al |
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| Authors: | E. Jäger K. Bürkmann B. Fischer H. -P. Frank B. Ittermann G. Sulzer H. -J. Stöckmann H. Ackermann |
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| Affiliation: | (1) Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften der Philipps-Universität, Renthof 5, W-3550 Marburg, Federal Republic of Germany;(2) Present address: GmbH, W-8225 Traunreut, Germany;(3) Present address: BESSY, Lentzeallee 100, W-1000 Berlin 33, Germany |
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| Abstract: | The spin-lattice relaxation of12B in single-crystal aluminum was measured by  NMR in the temperature range 290 to 700 K. The total relaxation rate was separated into two well understood contributions caused by the interaction with conduction electrons and by12B diffusion, and into a third unexplained part at high temperatures. From the comparison of the diffusional relaxation rate with theoretical calculations it was concluded that the nearest neighbours of12B, trapped in the octahedral interstitial site, are displaced away by 8.8 (30)%. |
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