/sup 61/Ni Moessbauer study of the hyperfine magnetic field near the Ni surface

Journal Article · Fri May 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.35.6588· OSTI ID:5895462

Stadnik, Z M; Griesbach, P; Dehe, G; Guetlich, P; Kohara, T; Stroink, G

/sup 61/Ni Moessbauer measurements have been performed at 4.2 K on spherical Ni particles covered with a protective layer of SiO with average diameters of 500 and 50 A. The hyperfine magnetic field at /sup 61/Ni nuclei for 500-A particles has been found to be 78.3(4) kOe, compared to the field for Ni foil of 75.0(2) kOe. The small difference is due to the demagnetization and dipolar fields in 500-A particles. The spectrum of 50-A particles has a surface component with the corresponding value of the hyperfine magnetic field of 41.6(93) kOe. This strongly indicates that, in accordance with recent theoretical studies, there is a decrease of the hyperfine magnetic field in the surface layer of nickel.

• Research Organization: Department of Physics, Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5
• OSTI ID: 5895462
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:13; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CHALCOGENIDES
COATINGS
ELEMENTS
LAYERS
METALS
MOESSBAUER EFFECT
NICKEL
OXIDES
OXYGEN COMPOUNDS
PARTICLES
SILICON COMPOUNDS
SILICON OXIDES
SURFACES
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE