title: Magnetic enhancement in nanoscale CoRh particles.
abstract: The influence of size reduction on the magnetism of CoRh has been studied on a system of isolated nanometric spherical bimetallic ultrafine particles embedded in a polymer matrix. Pulsed fields up to 30 T were used in order to approach the magnetic saturation ( M(S)). Particles with a mean diameter of 1.65 (+/-0.1) nm display a value of 2.38 micro(B) per CoRh unit strongly enhanced compared to values calculated or measured on a bulk alloy. These results were interpreted as the first evidence of the cooperative role of both alloying and size reduction to the enhancement of M(S) in this system associating a 3d FM metal with a 4d metal.
authors.affiliation: LCC, 205 Route de Narbonne, 31077 Toulouse, France.
authors.forename: David
authors.initials: D
authors.lastname: Zitoun
authors.forename: Marc
authors.initials: M
authors.lastname: Respaud
authors.forename: Marie-Claire
authors.initials: MC
authors.lastname: Fromen
authors.forename: Marie José
authors.initials: MJ
authors.lastname: Casanove
authors.forename: Pierre
authors.initials: P
authors.lastname: Lecante
authors.forename: Catherine
authors.initials: C
authors.lastname: Amiens
authors.forename: Bruno
authors.initials: B
authors.lastname: Chaudret