Co-59 nuclear magnetic resonance studies of magnetic excitations in ferromagnetic nanowires

Authors
Scarani, V De Riedmatten, H Ansermet, JP
Citation
V. Scarani et al., Co-59 nuclear magnetic resonance studies of magnetic excitations in ferromagnetic nanowires, APPL PHYS L, 76(7), 2000, pp. 903-905
Citations number
33
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
76
Issue
7
Year of publication
2000
Pages
903 - 905
Database
ISI
SICI code
0003-6951(20000214)76:7<903:CNMRSO>2.0.ZU;2-W
Abstract
Magnetic excitations of cobalt-based nanowires are investigated by measurin g the nuclear spin-lattice relaxation (SLR) of Co-59 in zero and 1 T applie d field. Co/Cu multilayers are shown to have a faster SLR than bulk Co. Thi s relaxation is of magnetic origin and due to the layered structure. Oxidiz ed wires have a temperature dependence of the SLR which provides direct evi dence of the thermal fluctuation of the uncompensated spins of the CoO grai ns at the surface of the wires. (C) 2000 American Institute of Physics. [S0 003-6951(00)01907-0].