TY  - JOUR
AU  - Balster, T.
AU  - Kovacs, D. A.
AU  - Pflitsch, C.
AU  - Verheij, L. K.
AU  - David, R.
AU  - Franchy, R.
TI  - Structure and magnetic properties of ultrathin iron films deposited on the CoGa(100) surface
JO  - Physical review / B
VL  - 66
IS  - 18
SN  - 0163-1829
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-24645
SP  - 184406
PY  - 2002
N1  - Record converted from VDB: 12.11.2012
AB  - Epitaxial bcc alpha-Fe(100) films are grown on the (100) surface of a CoGa crystal. The misfit between the Fe and the CoGa lattices is very small (<0.5%). Both, at room temperature and at 550 K layer by layer growth is found with thermal energy helium atom scattering (TEAS). The TEAS experiments show that iron films grown at 550 K on reconstructed c(4x2) CoGa(100) are smooth. The iron films are stable up to a temperature of 650 K. The magnetic properties of the Fe films are investigated with the magneto-optical Kerr effect. Fe films with a thickness in excess of 1.1-1.3 ML are ferromagnetic at 300 K, with the easy axis for magnetization oriented parallel to the surface. It is found that the coercive field H-c is sensitive to the order of the film. Upon annealing at 550-600 K subsequent to deposition, the coercive field, measured around room temperature, increases. The ordering of the film appeared to have no effect on the remanent magnetization. For a 1.7 ML Fe film a Curie temperature of 525 K is measured. At higher coverage the Curie temperature increases to above 600 K. The coercive field H-c is found to approach zero at a 50-100 K lower temperature.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000179633100042
DO  - DOI:10.1103/PhysRevB.66.184406
UR  - https://juser.fz-juelich.de/record/24645
ER  -