Temperature Dependence of Magnetization in Transition Metal Ultrathin Films of Various Thicknesses

• Authors: R. Świrkowicz
• Languages of publication: EN

Abstracts

EN

Temperature dependence of the local magnetization in the spin-wave regime is calculated within the framework of the multiband model for ultrathin films consisting of 5, 7 and 9 monolayers. The temperature range in which the calculated results can be fitted to the Bloch T^{3/2} law is found in all cases. The Bloch coefficient Bay corresponding to temperature dependence of the average film magnetization is found to be proportional to 1/D, where D is the thickness of the film. The spatial distribution of the local magnetization is obtained. The Bloch coefficient corresponding to the surface layer appears to be greater than the one corresponding to the central layer, namely B_{s} > B_{c}. The ratio B_{s}/B_{c} is increasing with an increase of the film thickness. The calculated results are well consistent with experimental ones obtained for ultrathin films of various thicknesses.

Keywords

EN

75.70.Ak; 76.80.+y

Discipline

• 75.70.Ak: Magnetic properties of monolayers and thin films
• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 80
• Issue: 5
• Pages: 689-697

Dates

published

1991-11

received

1991-05-06

(unknown)

1991-07-26

Contributors

author

R. Świrkowicz

• Institute of Physics, Warsaw Technical University, Koszykowa 75, 00-662 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.80.689