Pseudodipolar model of surface magnetostriction for thin layers with roughness

• Autorzy: Szumiata T , Gzik-Szumiata M , Brzózka K
• Języki publikacji: EN

Abstrakty

EN

An effective magnetostriction model for monocrystalline thin films of cubic structure has been presented. The film roughness was simulated by cubicoidal steps on surface repeated in the plane with a constant period. In order to describe a magnetoelastic energy, a pseudodipolar spin–spin interaction was considered. Lattice summations of strain dependent energy contribution were performed symbolically. A significant difference of magnetoelastic energy compared with the film interior was observed only in the first atomic layer at the surface. An effective pseudodipolar magnetostriction constant λ eff for rough film was determined by estimating the volume of surface region and considering the magnetostriction data for bulk material. Thickness dependence of λ eff for bcc Fe film has been presented and compared with magnetic dipolar contribution.

Słowa kluczowe

EN

magnetic thin layer; surface magnetostriction; surface roughness; pseudodipolar interactions

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2008
• Tom: Vol. 26, No. 4
• Strony: 1039--1044
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Szumiata T

• Department of Physics, Technical University of Radom, Krasickiego 54, 26-600 Radom, Poland

autor

Gzik-Szumiata M

• Department of Physics, Technical University of Radom, Krasickiego 54, 26-600 Radom, Poland

autor

Brzózka K

• Department of Physics, Technical University of Radom, Krasickiego 54, 26-600 Radom, Poland

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