Mössbauer emission spectra of Co-Films (4–8 Å) on Cu

摘要: Abstract Co-films of a few atomic layers were prepared as Mossbauer-source films, containing 1% 57 Co, by evaporation on freshly Cu-films. As the preparation was done in analogy to former work oligatomic Co(111)-films (flat single-crystal films layers), are expected form flat single crystal structure, good approximation. Two sections large area film measured magnetometry and Mossbauer spectrometry, one consisting 2, other 4 (mean thickness). Both showed common ferromagnetic hysteresis. The Mossbauer-spectrum 2-layers consisted sextet with hyperfine field H rmn = 262 KOe (at K), superimposed weak doublet. indication found for magnetic “Dead Layers”.