Unidirectional magnetic anisotropy in amorphous Tb-Fe films

Author

Shipil, Elena V. ; Guslienko, Konstantin Yu. ; Szymanski, Bogdan

Author_Institution

Inst. of Metal Phys., Acad. of Sci., Kiev, Ukraine

Volume

30

Issue

2

fYear

1994

fDate

3/1/1994 12:00:00 AM

Firstpage

797

Lastpage

799

Abstract

The torque curves (TC) of amorphous TbFe films with the thicknesses d=40-80 nm and compositions near room temperature compensation point were experimentally investigated. The films were evaporated by the electron-beam method. Unidirectional (exchange) anisotropy revealed in TC hysteresis is detected and explained by the strong chemical inhomogeneities of the films. The Fe inclusions are the characteristic peculiarity of Tb-Fe films. Their dimensions are determined by the preparation technique. The exchange field on Tb ions is estimated by using the temperature dependence of the TC amplitude as 1.1-1.3·10⁶ Oe

Keywords

exchange interactions (electron); iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic properties of amorphous substances; magnetic thin films; terbium alloys; vacuum deposited coatings; 40 to 80 nm; Fe inclusions; Tb-Fe; amorphous TbFe films; chemical inhomogeneities; electron-beam evaporation; exchange anisotropy; exchange field; temperature dependence; torque curves; unidirectional magnetic anisotropy; Amorphous materials; Amplitude estimation; Anisotropic magnetoresistance; Chemicals; Iron; Magnetic anisotropy; Magnetic films; Magnetic hysteresis; Temperature; Torque;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312412

Filename

312412