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Evidence for quantum mesoscopic tunneling in rare-earth layers : The 6th joint magnetism and magnetic materials (MMM)−intermag conferenc (1994)

O'Shea, M. J. ; Perera, P.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 76 (1994), S. 6174-6176

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We report on finite size effects and evidence for quantum mesoscopic tunneling (QMT) in thin isolated rare-earth layers prepared in the form of R/Mo multilayers where R represents Tb, Dy, or Dy50Co50. The magnetic transition temperature Tc decreases with decreasing magnetic layer thickness and is discussed within a finite size scaling theory. Evidence for QMT is found in magnetic relaxation measurements in these systems with a sharp crossover to a temperature-independent magnetic relaxation regime at low temperatures. The Tb system has a crossover temperature T0 of 20 K, the largest value reported so far for this crossover.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.358343

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