Onset of Magnetic Order in fcc-Fe Films on Cu(100)

Onset of magnetic order in fcc-Fe films on Cu(100).

On the basis of an ab initio theory of metallic magnetism in layered materials, we investigate the onset of magnetic order in thin (2-8 layers) fcc-Fe films on and embedded in Cu(100) substrates. In particular, we find an oscillatory dependence of the Curie temperatures on embedding depth, in excellent agreement with experimental data. The thermally induced spin fluctuations are treated within ...

Coexistence of charge and ferromagnetic order in fcc Fe.

Phase coexistence phenomena have been intensively studied in strongly correlated materials where several ordered states simultaneously occur or compete. Material properties critically depend on external parameters and boundary conditions, where tiny changes result in qualitatively different ground states. However, up to date, phase coexistence phenomena have exclusively been reported for comple...

Effect of Cobalt Concentration on Structural and Magnetic Properties of Co-Fe Thin Films

Co-Fe films were electrodeposited on Cu substrate from electrolytes with different Co concentration  levels. X-ray diffraction (XRD) was used  to  investigate  the  films  crystal  structures. The  results  indicate that  if  the  Co  concentration  is  less  that  the  Fe  concentration,  the cubic  structure  appears  in  the  films, while  the  hexagonal  structure dominates when  the C...

Magnetic relaxation in Fe-(SiO2) granular films.

Growth, structure, and magnetism of fcc Fe ultrathin films on Cu„111... by pulsed laser deposition

Ultrathin Fe films on Cu~111! have been grown by pulsed-laser deposition ~PLD! whose instantaneous deposition rate is about six orders of magnitude larger than that of the conventional molecular-beam epitaxy based on thermal deposition ~TD!. Compared to the TD prepared Fe/Cu~111! films, the PLD films have a significantly improved layer-by-layer morphology and a substantially enhanced stability ...