EVIDENCE FOR A STRONG IMPURITY-NUCLEUS NUCLEAR-MAGNON INTERACTION OF Y-89M IN HCP COBALT

Authors
SEEWALD G HAGN E ZECH E
Citation
G. Seewald et al., EVIDENCE FOR A STRONG IMPURITY-NUCLEUS NUCLEAR-MAGNON INTERACTION OF Y-89M IN HCP COBALT, Physical review letters, 79(13), 1997, pp. 2550-2553
Citations number
11
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
13
Year of publication
1997
Pages
2550 - 2553
Database
ISI
SICI code
0031-9007(1997)79:13<2550:EFASIN>2.0.ZU;2-T
Abstract
We report the first observation of a nuclear-magnetism contribution to the magnetic hyperfine interaction of impurity atoms in a ferromagnet ic host lattice. For Sg(89m)YCo((hcp)) a significant temperature depen dence of the magnetic hyperfine interaction was observed for 10 less t han or equal to T less than or equal to 25 mK. It is attributed to a s trong coupling of the Y-89m nuclei to collective nuclear-magnon excita tion modes elf the Co-59 nuclear spin system.