title: Self-diffusion in liquid interfaces.
abstract: For studying self-diffusion in liquid interfaces, 59Fe tracer diffusion was measured on ultrafine-grained Nd2Fe14B which undergoes an intergranular melting transition for low Nd excess. The diffusion coefficient in the intergranular liquid layers is found to be lower than in bulk melts indicating a hampered atomic mobility due to confinement. Well above the intergranular melting transition, the diffusivity in the liquid interfaces approaches a value characteristic for bulk melts.
authors.affiliation: Institut für Nanotechnologie, Forschungszentrum Karlsruhe GmbH, D-76021 Karlsruhe, Germany.
authors.forename: Simone
authors.initials: S
authors.lastname: Herth
authors.forename: Feng
authors.initials: F
authors.lastname: Ye
authors.forename: Martin
authors.initials: M
authors.lastname: Eggersmann
authors.forename: Oliver
authors.initials: O
authors.lastname: Gutfleisch
authors.forename: Roland
authors.initials: R
authors.lastname: Würschum