Preparation and properties of EuO films

Author

Ahn, Kie Y. ; Suits, J.C.

Author_Institution

IBM Thomas J. Watson Research Center, Yorktown Heights, N.Y.

Volume

3

Issue

3

fYear

1967

fDate

9/1/1967 12:00:00 AM

Firstpage

453

Lastpage

455

Abstract

Films of EuO have been vacuum deposited by three techniques: electron beam heating of bulk EuO, simultaneous deposition of Eu and Eu2O3, and evaporation of Eu in a partial pressure of oxygen. X-ray measurements show the structure of these films to be essentially the same as bulk EuO. The Faraday rotation of EuO films was measured at 5° K for wavelengths between 0.5μ and 1.2μ. The largest specific Faraday rotation occurs at a wavelength of 0.66μ and is 5 × 10⁵degrees per cm, which is one of the highest values yet reported for any material. From magneto-optical measurements and force balance measurements, various magnetic properties of these films have been determined and compared with bulk EuO. Magnetic moment, susceptibility, and squareness of EuO films do not differ greatly from bulk. The coercive force, however, is several times bulk value, and appears to be related to stress in the films.

Keywords

Europium oxide films; Electron beams; Force measurement; Heating; Magnetic films; Magnetic materials; Magnetic moments; Magnetic properties; Rotation measurement; Vacuum technology; Wavelength measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1967.1066089

Filename

1066089